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f1dd71982d
24799 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Fenghua Yu
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f1dd71982d |
selftests/resctrl: Skip the test if requested resctrl feature is not supported
There could be two reasons why a resctrl feature might not be enabled on the platform 1. H/W might not support the feature 2. Even if the H/W supports it, the user might have disabled the feature through kernel command line arguments Hence, any resctrl unit test (like cmt, cat, mbm and mba) before starting the test will first check if the feature is enabled on the platform or not. If the feature isn't enabled, then the test returns with an error status. For example, if MBA isn't supported on a platform and if the user tries to run MBA, the output will look like this ok mounting resctrl to "/sys/fs/resctrl" not ok MBA: schemata change But, not supporting a feature isn't a test failure. So, instead of treating it as an error, use the SKIP directive of the TAP protocol. With the change, the output will look as below ok MBA # SKIP Hardware does not support MBA or MBA is disabled Suggested-by: Reinette Chatre <reinette.chatre@intel.com> Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Fenghua Yu
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c9fb4e7cee |
selftests/resctrl: Modularize resctrl test suite main() function
Resctrl test suite main() function does the following things 1. Parses command line arguments passed by user 2. Some setup checks 3. Logic that calls into each unit test 4. Print result and clean up after running each unit test Introduce wrapper functions for steps 3 and 4 to modularize the main() function. Adding these wrapper functions makes it easier to add any logic to each individual test. Please note that this is a preparatory patch for the next one and no functional changes are intended. Suggested-by: Reinette Chatre <reinette.chatre@intel.com> Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Fenghua Yu
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09a6793462 |
selftests/resctrl: Don't hard code value of "no_of_bits" variable
Cache related tests (like CAT and CMT) depend on a variable called no_of_bits to run. no_of_bits defines the number of contiguous bits that should be set in the CBM mask and a user can pass a value for no_of_bits using -n command line argument. If a user hasn't passed any value, it defaults to 5 (randomly chosen value). Hard coding no_of_bits to 5 will make the cache tests fail to run on systems that support maximum cbm mask that is less than or equal to 5 bits. Hence, don't hard code no_of_bits value. If a user passes a value for "no_of_bits" using -n option, use it. Otherwise, no_of_bits is equal to half of the maximum number of bits in the cbm mask. Please note that CMT test is still hard coded to 5 bits. It will change in subsequent patches that change CMT test. Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Fenghua Yu
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06bd03a57f |
selftests/resctrl: Fix MBA/MBM results reporting format
MBM unit test starts fill_buf (default built-in benchmark) in a new con_mon group (c1, m1) and records resctrl reported mbm values and iMC (Integrated Memory Controller) values every second. It does this for five seconds (randomly chosen value) in total. It then calculates average of resctrl_mbm values and imc_mbm values and if the difference is greater than 300 MB/sec (randomly chosen value), the test treats it as a failure. MBA unit test is similar to MBM but after every run it changes schemata. Checking for a difference of 300 MB/sec doesn't look very meaningful when the mbm values are changing over a wide range. For example, below are the values running MBA test on SKL with different allocations 1. With 10% as schemata both iMC and resctrl mbm_values are around 2000 MB/sec 2. With 100% as schemata both iMC and resctrl mbm_values are around 10000 MB/sec A 300 MB/sec difference between resctrl_mbm and imc_mbm values is acceptable at 100% schemata but it isn't acceptable at 10% schemata because that's a huge difference. So, fix this by checking for percentage difference instead of absolute difference i.e. check if the difference between resctrl_mbm value and imc_mbm value is within 5% (randomly chosen value) of imc_mbm value. If the difference is greater than 5% of imc_mbm value, treat it is a failure. Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Fenghua Yu
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ee0415681e |
selftests/resctrl: Use resctrl/info for feature detection
Resctrl test suite before running any unit test (like cmt, cat, mbm and mba) should first check if the feature is enabled (by kernel and not just supported by H/W) on the platform or not. validate_resctrl_feature_request() is supposed to do that. This function intends to grep for relevant flags in /proc/cpuinfo but there are several issues here 1. validate_resctrl_feature_request() calls fgrep() to get flags from /proc/cpuinfo. But, fgrep() can only return a string with maximum of 255 characters and hence the complete cpu flags are never returned. 2. The substring search logic is also busted. If strstr() finds requested resctrl feature in the cpu flags, it returns pointer to the first occurrence. But, the logic negates the return value of strstr() and hence validate_resctrl_feature_request() returns false if the feature is present in the cpu flags and returns true if the feature is not present. 3. validate_resctrl_feature_request() checks if a resctrl feature is reported in /proc/cpuinfo flags or not. Having a cpu flag means that the H/W supports the feature, but it doesn't mean that the kernel enabled it. A user could selectively enable only a subset of resctrl features using kernel command line arguments. Hence, /proc/cpuinfo isn't a reliable source to check if a feature is enabled or not. The 3rd issue being the major one and fixing it requires changing the way validate_resctrl_feature_request() works. Since, /proc/cpuinfo isn't the right place to check if a resctrl feature is enabled or not, a more appropriate place is /sys/fs/resctrl/info directory. Change validate_resctrl_feature_request() such that, 1. For cat, check if /sys/fs/resctrl/info/L3 directory is present or not 2. For mba, check if /sys/fs/resctrl/info/MB directory is present or not 3. For cmt, check if /sys/fs/resctrl/info/L3_MON directory is present and check if /sys/fs/resctrl/info/L3_MON/mon_features has llc_occupancy 4. For mbm, check if /sys/fs/resctrl/info/L3_MON directory is present and check if /sys/fs/resctrl/info/L3_MON/mon_features has mbm_<total/local>_bytes Please note that only L3_CAT, L3_CMT, MBA and MBM are supported. CDP and L2 variants can be added later. Reported-by: Reinette Chatre <reinette.chatre@intel.com> Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Fenghua Yu
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a3611fbc6e |
selftests/resctrl: Check for resctrl mount point only if resctrl FS is supported
check_resctrlfs_support() does the following 1. Checks if the platform supports resctrl file system or not by looking for resctrl in /proc/filesystems 2. Calls opendir() on default resctrl file system path (i.e. /sys/fs/resctrl) 3. Checks if resctrl file system is mounted or not by looking at /proc/mounts Steps 2 and 3 will fail if the platform does not support resctrl file system. So, there is no need to check for them if step 1 fails. Fix this by returning immediately if the platform does not support resctrl file system. Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Fenghua Yu
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b67a7665a9 |
selftests/resctrl: Add config dependencies
Add the config file for test dependencies. Suggested-by: Shuah Khan <skhan@linuxfoundation.org> Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Reinette Chatre
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f29838e6fa |
selftests/resctrl: Fix a printed message
Add a missing newline to the printed help text to improve readability. Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Fenghua Yu
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03216ed7bb |
selftests/resctrl: Share show_cache_info() by CAT and CMT tests
show_cache_info() functions are defined separately in CAT and CMT tests. But the functions are same for the tests and unnecessary to be defined separately. Share the function by the tests. Suggested-by: Shuah Khan <skhan@linuxfoundation.org> Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Fenghua Yu
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ca2f4214f9 |
selftests/resctrl: Call kselftest APIs to log test results
Call kselftest APIs instead of using printf() to log test results for cleaner code and better future extension. Suggested-by: Shuah Khan <skhan@linuxfoundation.org> Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Fenghua Yu
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2f320911d9 |
selftests/resctrl: Rename CQM test as CMT test
CMT (Cache Monitoring Technology) [1] is a H/W feature that reports cache
occupancy of a process. resctrl selftest suite has a unit test to test CMT
for LLC but the test is named as CQM (Cache Quality Monitoring).
Furthermore, the unit test source file is named as cqm_test.c and several
functions, variables, comments, preprocessors and statements widely use
"cqm" as either suffix or prefix. This rampant misusage of CQM for CMT
might confuse someone who is newly looking at resctrl selftests because
this feature is named CMT in the Intel Software Developer's Manual.
Hence, rename all the occurrences (unit test source file name, functions,
variables, comments and preprocessors) of cqm with cmt.
[1] Please see Intel SDM, Volume 3, chapter 17 and section 18 for more
information on CMT: https://software.intel.com/content/www/us/en/develop/articles/intel-sdm.html
Suggested-by: Reinette Chatre <reinette.chatre@intel.com>
Tested-by: Babu Moger <babu.moger@amd.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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Fenghua Yu
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d7af3d0d51 |
selftests/resctrl: Fix missing options "-n" and "-p"
resctrl test suite accepts command line arguments (like -b, -t, -n and -p) as documented in the help. But passing -n and -p throws an invalid option error. This happens because -n and -p are missing in the list of characters that getopt() recognizes as valid arguments. Hence, they are treated as invalid options. Fix this by adding them to the list of characters that getopt() recognizes as valid arguments. Please note that the main() function already has the logic to deal with the values passed as part of these arguments and hence no changes are needed there. Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Reinette Chatre
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f5f16ae4fa |
selftests/resctrl: Ensure sibling CPU is not same as original CPU
The resctrl tests can accept a CPU on which the tests are run and use default of CPU #1 if it is not provided. In the CAT test a "sibling CPU" is determined that is from the same package where another thread will be run. The current algorithm with which a "sibling CPU" is determined does not take the provided/default CPU into account and when that CPU is the first CPU in a package then the "sibling CPU" will be selected to be the same CPU since it starts by picking the first CPU from core_siblings_list. Fix the "sibling CPU" selection by taking the provided/default CPU into account and ensuring a sibling that is a different CPU is selected. Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Fenghua Yu
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2428673638 |
selftests/resctrl: Clean up resctrl features check
Checking resctrl features call strcmp() to compare feature strings (e.g. "mba", "cat" etc). The checkings are error prone and don't have good coding style. Define the constant strings in macros and call strncmp() to solve the potential issues. Suggested-by: Shuah Khan <skhan@linuxfoundation.org> Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Fenghua Yu
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896016d2ad |
selftests/resctrl: Fix compilation issues for other global variables
Reinette reported following compilation issue on Fedora 32, gcc version 10.1.1 /usr/bin/ld: resctrl_tests.o:<src_dir>/resctrl.h:65: multiple definition of `bm_pid'; cache.o:<src_dir>/resctrl.h:65: first defined here Other variables are ppid, tests_run, llc_occup_path, is_amd. Compiler isn't happy because these variables are defined globally in two .c files but are not declared as extern. To fix issues for the global variables, declare them as extern. Chang Log: - Split this patch from v4's patch 1 (Shuah). Reported-by: Reinette Chatre <reinette.chatre@intel.com> Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Fenghua Yu
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8236c51d85 |
selftests/resctrl: Fix compilation issues for global variables
Reinette reported following compilation issue on Fedora 32, gcc version 10.1.1 /usr/bin/ld: cqm_test.o:<src_dir>/cqm_test.c:22: multiple definition of `cache_size'; cat_test.o:<src_dir>/cat_test.c:23: first defined here The same issue is reported for long_mask, cbm_mask, count_of_bits etc variables as well. Compiler isn't happy because these variables are defined globally in two .c files namely cqm_test.c and cat_test.c and the compiler during compilation finds that the variable is already defined (multiple definition error). Taking a closer look at the usage of these variables reveals that these variables are used only locally in functions such as cqm_resctrl_val() (defined in cqm_test.c) and cat_perf_miss_val() (defined in cat_test.c). These variables are not shared between those functions. So, there is no need for these variables to be global. Hence, fix this issue by making them static variables. Reported-by: Reinette Chatre <reinette.chatre@intel.com> Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Fenghua Yu
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a9d26a302d |
selftests/resctrl: Enable gcc checks to detect buffer overflows
David reported a buffer overflow error in the check_results() function of the cmt unit test and he suggested enabling _FORTIFY_SOURCE gcc compiler option to automatically detect any such errors. Feature Test Macros man page describes_FORTIFY_SOURCE as below "Defining this macro causes some lightweight checks to be performed to detect some buffer overflow errors when employing various string and memory manipulation functions (for example, memcpy, memset, stpcpy, strcpy, strncpy, strcat, strncat, sprintf, snprintf, vsprintf, vsnprintf, gets, and wide character variants thereof). For some functions, argument consistency is checked; for example, a check is made that open has been supplied with a mode argument when the specified flags include O_CREAT. Not all problems are detected, just some common cases. If _FORTIFY_SOURCE is set to 1, with compiler optimization level 1 (gcc -O1) and above, checks that shouldn't change the behavior of conforming programs are performed. With _FORTIFY_SOURCE set to 2, some more checking is added, but some conforming programs might fail. Some of the checks can be performed at compile time (via macros logic implemented in header files), and result in compiler warnings; other checks take place at run time, and result in a run-time error if the check fails. Use of this macro requires compiler support, available with gcc since version 4.0." Fix the buffer overflow error in the check_results() function of the cmt unit test and enable _FORTIFY_SOURCE gcc check to catch any future buffer overflow errors. Reported-by: David Binderman <dcb314@hotmail.com> Suggested-by: David Binderman <dcb314@hotmail.com> Tested-by: Babu Moger <babu.moger@amd.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Colin Ian King
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ea2c679edc |
selftests/timers: Fix spelling mistake "clocksourc" -> "clocksource"
There is a spelling mistake in a comment. Fix it. Signed-off-by: Colin Ian King <colin.king@canonical.com> Acked-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> |
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Ilya Leoshkevich
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cb4969e6f9 |
selftests: fix prepending $(OUTPUT) to $(TEST_PROGS)
Currently the following command produces an error message:
linux# make kselftest TARGETS=bpf O=/mnt/linux-build
# selftests: bpf: test_libbpf.sh
# ./test_libbpf.sh: line 23: ./test_libbpf_open: No such file or directory
# test_libbpf: failed at file test_l4lb.o
# selftests: test_libbpf [FAILED]
The error message might not affect the return code of make, therefore
one needs to grep make output in order to detect it.
This is not the only instance of the same underlying problem; any test
with more than one element in $(TEST_PROGS) fails the same way. Another
example:
linux# make O=/mnt/linux-build TARGETS=splice kselftest
[...]
# ./short_splice_read.sh: 15: ./splice_read: not found
# FAIL: /sys/module/test_module/sections/.init.text 2
not ok 2 selftests: splice: short_splice_read.sh # exit=1
The current logic prepends $(OUTPUT) only to the first member of
$(TEST_PROGS). After that, run_one() does
cd `dirname $TEST`
For all tests except the first one, `dirname $TEST` is ., which means
they cannot access the files generated in $(OUTPUT).
Fix by using $(addprefix) to prepend $(OUTPUT)/ to each member of
$(TEST_PROGS).
Fixes:
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Linus Torvalds
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cee407c5cc |
* Doc fixes
* selftests fixes * Add runstate information to the new Xen support * Allow compiling out the Xen interface * 32-bit PAE without EPT bugfix * NULL pointer dereference bugfix -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmA+lGcUHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroMaMQf/Q8bQr5vVAeNk+1MyRmzNqFEbLqbe h50f4Wd2N+svZ6XinQH1vvuQm1WYj/g616Q3nCeYwCJyY34g5tf60XcuAMnVRIzw qc2IUvSAJ3faVElMrSA5thN3bkPzJpRrdIpQGBgOd+rT+eQkPSsJlTy34JJmvbmh xFGjoVj49tYEkFfpxEbtytW6QiYtPz/ai8SARRXbEUWO/pVzdkgK5XWshRhE9vpB GLCEXUngdPokJMblRMuK4YOSFQXXHobAJAgPwSzguDV41qezXaKOGYOLe7+V+0kH z607RnQc1wGgsLanT13okYMQr09/XCjpvFkZ9CK2bIJPsyWP+ihA/37hVQ== =1GNo -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull KVM fixes from Paolo Bonzini: - Doc fixes - selftests fixes - Add runstate information to the new Xen support - Allow compiling out the Xen interface - 32-bit PAE without EPT bugfix - NULL pointer dereference bugfix * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: SVM: Clear the CR4 register on reset KVM: x86/xen: Add support for vCPU runstate information KVM: x86/xen: Fix return code when clearing vcpu_info and vcpu_time_info selftests: kvm: Mmap the entire vcpu mmap area KVM: Documentation: Fix index for KVM_CAP_PPC_DAWR1 KVM: x86: allow compiling out the Xen hypercall interface KVM: xen: flush deferred static key before checking it KVM: x86/mmu: Set SPTE_AD_WRPROT_ONLY_MASK if and only if PML is enabled KVM: x86: hyper-v: Fix Hyper-V context null-ptr-deref KVM: x86: remove misplaced comment on active_mmu_pages KVM: Documentation: rectify rst markup in kvm_run->flags Documentation: kvm: fix messy conversion from .txt to .rst |
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David Woodhouse
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30b5c851af |
KVM: x86/xen: Add support for vCPU runstate information
This is how Xen guests do steal time accounting. The hypervisor records the amount of time spent in each of running/runnable/blocked/offline states. In the Xen accounting, a vCPU is still in state RUNSTATE_running while in Xen for a hypercall or I/O trap, etc. Only if Xen explicitly schedules does the state become RUNSTATE_blocked. In KVM this means that even when the vCPU exits the kvm_run loop, the state remains RUNSTATE_running. The VMM can explicitly set the vCPU to RUNSTATE_blocked by using the KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_CURRENT attribute, and can also use KVM_XEN_VCPU_ATTR_TYPE_RUNSTATE_ADJUST to retrospectively add a given amount of time to the blocked state and subtract it from the running state. The state_entry_time corresponds to get_kvmclock_ns() at the time the vCPU entered the current state, and the total times of all four states should always add up to state_entry_time. Co-developed-by: Joao Martins <joao.m.martins@oracle.com> Signed-off-by: Joao Martins <joao.m.martins@oracle.com> Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Message-Id: <20210301125309.874953-2-dwmw2@infradead.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Aaron Lewis
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6528fc0a11 |
selftests: kvm: Mmap the entire vcpu mmap area
The vcpu mmap area may consist of more than just the kvm_run struct. Allocate enough space for the entire vcpu mmap area. Without this, on x86, the PIO page, for example, will be missing. This is problematic when dealing with an unhandled exception from the guest as the exception vector will be incorrectly reported as 0x0. Message-Id: <20210210165035.3712489-1-aaronlewis@google.com> Reviewed-by: Andrew Jones <drjones@redhat.com> Co-developed-by: Steve Rutherford <srutherford@google.com> Signed-off-by: Aaron Lewis <aaronlewis@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Linus Torvalds
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8b1e2c50bc |
Tracing: Fixes for 5.12
Two fixes: - Fix an unsafe printf string usage in a kmem trace event - Fix spelling in output from the latency-collector tool -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYDhhwBQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qtclAQCztNe2l9UrmkADtaJNHOcmujRvxi+9 j0ppoSe7uKI4zAD+JVG40IyxvprfxengjmwIdvihL+uuWL50ULmvozRdzQM= =8nVm -----END PGP SIGNATURE----- Merge tag 'trace-v5.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing fixes from Steven Rostedt: "Two fixes: - Fix an unsafe printf string usage in a kmem trace event - Fix spelling in output from the latency-collector tool" * tag 'trace-v5.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing/tools: fix a couple of spelling mistakes mm, tracing: Fix kmem_cache_free trace event to not print stale pointers |
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Linus Torvalds
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d94d14008e |
x86:
- take into account HVA before retrying on MMU notifier race - fixes for nested AMD guests without NPT - allow INVPCID in guest without PCID - disable PML in hardware when not in use - MMU code cleanups -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmA3eMQUHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroP6TQf5ARpUyq3oo+13albwg+zNca6hzR8i Vl7dpoR3bSJCN3sTYFnlL9eXw5TxgeUL2nqKqma6ddZDNDEBLT2Bq8rcFkbi4pUf n7av76EEq74HW/jlUhKVug7Q5Dm5DiKC6BOH3RVuKHbr6iZseyF3jXZSX0Ppf0yF gvoy6cGyMW60NVLN5tuGeOjVQ1fxziE0SqB90fXuiWgZ5rzIBfbqJV7EOOZsGO67 /LHSaEpvKutsc2a+Hx76yQNJjAbb2/O+4Bo5/RqfdqS5tRLGBzYggdJjLvAPvd6P pTNtDCnErvBZQfMedEQyHYuBL2Ca59fOp6i/ekOM2I+m7816+kSkdTMt2g== =iMHY -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull more KVM updates from Paolo Bonzini: "x86: - take into account HVA before retrying on MMU notifier race - fixes for nested AMD guests without NPT - allow INVPCID in guest without PCID - disable PML in hardware when not in use - MMU code cleanups: * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (28 commits) KVM: SVM: Fix nested VM-Exit on #GP interception handling KVM: vmx/pmu: Fix dummy check if lbr_desc->event is created KVM: x86/mmu: Consider the hva in mmu_notifier retry KVM: x86/mmu: Skip mmu_notifier check when handling MMIO page fault KVM: Documentation: rectify rst markup in KVM_GET_SUPPORTED_HV_CPUID KVM: nSVM: prepare guest save area while is_guest_mode is true KVM: x86/mmu: Remove a variety of unnecessary exports KVM: x86: Fold "write-protect large" use case into generic write-protect KVM: x86/mmu: Don't set dirty bits when disabling dirty logging w/ PML KVM: VMX: Dynamically enable/disable PML based on memslot dirty logging KVM: x86: Further clarify the logic and comments for toggling log dirty KVM: x86: Move MMU's PML logic to common code KVM: x86/mmu: Make dirty log size hook (PML) a value, not a function KVM: x86/mmu: Expand on the comment in kvm_vcpu_ad_need_write_protect() KVM: nVMX: Disable PML in hardware when running L2 KVM: x86/mmu: Consult max mapping level when zapping collapsible SPTEs KVM: x86/mmu: Pass the memslot to the rmap callbacks KVM: x86/mmu: Split out max mapping level calculation to helper KVM: x86/mmu: Expand collapsible SPTE zap for TDP MMU to ZONE_DEVICE and HugeTLB pages KVM: nVMX: no need to undo inject_page_fault change on nested vmexit ... |
||
|
Linus Torvalds
|
5ad3dbab56 |
Networking fixes for 5.12-rc1. Rather small batch this time.
Current release - regressions:
- bcm63xx_enet: fix sporadic kernel panic due to queue length
mis-accounting
Current release - new code bugs:
- bcm4908_enet: fix RX path possible mem leak
- bcm4908_enet: fix NAPI poll returned value
- stmmac: fix missing spin_lock_init in visconti_eth_dwmac_probe()
- sched: cls_flower: validate ct_state for invalid and reply flags
Previous releases - regressions:
- net: introduce CAN specific pointer in the struct net_device to
prevent mis-interpreting memory
- phy: micrel: set soft_reset callback to genphy_soft_reset for KSZ8081
- psample: fix netlink skb length with tunnel info
Previous releases - always broken:
- icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending
- wireguard: device: do not generate ICMP for non-IP packets
- mptcp: provide subflow aware release function to avoid a mem leak
- hsr: add support for EntryForgetTime
- r8169: fix jumbo packet handling on RTL8168e
- octeontx2-af: fix an off by one in rvu_dbg_qsize_write()
- i40e: fix flow for IPv6 next header (extension header)
- phy: icplus: call phy_restore_page() when phy_select_page() fails
- dpaa_eth: fix the access method for the dpaa_napi_portal
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Rather small batch this time.
Current release - regressions:
- bcm63xx_enet: fix sporadic kernel panic due to queue length
mis-accounting
Current release - new code bugs:
- bcm4908_enet: fix RX path possible mem leak
- bcm4908_enet: fix NAPI poll returned value
- stmmac: fix missing spin_lock_init in visconti_eth_dwmac_probe()
- sched: cls_flower: validate ct_state for invalid and reply flags
Previous releases - regressions:
- net: introduce CAN specific pointer in the struct net_device to
prevent mis-interpreting memory
- phy: micrel: set soft_reset callback to genphy_soft_reset for
KSZ8081
- psample: fix netlink skb length with tunnel info
Previous releases - always broken:
- icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending
- wireguard: device: do not generate ICMP for non-IP packets
- mptcp: provide subflow aware release function to avoid a mem leak
- hsr: add support for EntryForgetTime
- r8169: fix jumbo packet handling on RTL8168e
- octeontx2-af: fix an off by one in rvu_dbg_qsize_write()
- i40e: fix flow for IPv6 next header (extension header)
- phy: icplus: call phy_restore_page() when phy_select_page() fails
- dpaa_eth: fix the access method for the dpaa_napi_portal"
* tag 'net-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (55 commits)
r8169: fix jumbo packet handling on RTL8168e
net: phy: micrel: set soft_reset callback to genphy_soft_reset for KSZ8081
net: psample: Fix netlink skb length with tunnel info
net: broadcom: bcm4908_enet: fix NAPI poll returned value
net: broadcom: bcm4908_enet: fix RX path possible mem leak
net: hsr: add support for EntryForgetTime
net: dsa: sja1105: Remove unneeded cast in sja1105_crc32()
ibmvnic: fix a race between open and reset
net: stmmac: Fix missing spin_lock_init in visconti_eth_dwmac_probe()
net: introduce CAN specific pointer in the struct net_device
net: usb: qmi_wwan: support ZTE P685M modem
wireguard: kconfig: use arm chacha even with no neon
wireguard: queueing: get rid of per-peer ring buffers
wireguard: device: do not generate ICMP for non-IP packets
wireguard: peer: put frequently used members above cache lines
wireguard: selftests: test multiple parallel streams
wireguard: socket: remove bogus __be32 annotation
wireguard: avoid double unlikely() notation when using IS_ERR()
net: qrtr: Fix memory leak in qrtr_tun_open
vxlan: move debug check after netdev unregister
...
|
||
|
Colin Ian King
|
c1d96fa61e |
tracing/tools: fix a couple of spelling mistakes
There is a spelling mistake in the -g help option, I believe it should be "graph". There is also a spelling mistake in a warning message. Fix both mistakes. Link: https://lkml.kernel.org/r/20210225165248.22050-2-Viktor.Rosendahl@bmw.de Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Viktor Rosendahl <Viktor.Rosendahl@bmw.de> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
||
|
Linus Torvalds
|
29c395c77a |
Rework of the X86 irq stack handling:
The irq stack switching was moved out of the ASM entry code in course of
the entry code consolidation. It ended up being suboptimal in various
ways.
- Make the stack switching inline so the stackpointer manipulation is not
longer at an easy to find place.
- Get rid of the unnecessary indirect call.
- Avoid the double stack switching in interrupt return and reuse the
interrupt stack for softirq handling.
- A objtool fix for CONFIG_FRAME_POINTER=y builds where it got confused
about the stack pointer manipulation.
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Merge tag 'x86-entry-2021-02-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 irq entry updates from Thomas Gleixner:
"The irq stack switching was moved out of the ASM entry code in course
of the entry code consolidation. It ended up being suboptimal in
various ways.
This reworks the X86 irq stack handling:
- Make the stack switching inline so the stackpointer manipulation is
not longer at an easy to find place.
- Get rid of the unnecessary indirect call.
- Avoid the double stack switching in interrupt return and reuse the
interrupt stack for softirq handling.
- A objtool fix for CONFIG_FRAME_POINTER=y builds where it got
confused about the stack pointer manipulation"
* tag 'x86-entry-2021-02-24' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Fix stack-swizzle for FRAME_POINTER=y
um: Enforce the usage of asm-generic/softirq_stack.h
x86/softirq/64: Inline do_softirq_own_stack()
softirq: Move do_softirq_own_stack() to generic asm header
softirq: Move __ARCH_HAS_DO_SOFTIRQ to Kconfig
x86: Select CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK
x86/softirq: Remove indirection in do_softirq_own_stack()
x86/entry: Use run_sysvec_on_irqstack_cond() for XEN upcall
x86/entry: Convert device interrupts to inline stack switching
x86/entry: Convert system vectors to irq stack macro
x86/irq: Provide macro for inlining irq stack switching
x86/apic: Split out spurious handling code
x86/irq/64: Adjust the per CPU irq stack pointer by 8
x86/irq: Sanitize irq stack tracking
x86/entry: Fix instrumentation annotation
|
||
|
Linus Torvalds
|
4c48faba5b |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton: "A few small subsystems and some of MM. 172 patches. Subsystems affected by this patch series: hexagon, scripts, ntfs, ocfs2, vfs, and mm (slab-generic, slab, slub, debug, pagecache, swap, memcg, pagemap, mprotect, mremap, page-reporting, vmalloc, kasan, pagealloc, memory-failure, hugetlb, vmscan, z3fold, compaction, mempolicy, oom-kill, hugetlbfs, and migration)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (172 commits) mm/migrate: remove unneeded semicolons hugetlbfs: remove unneeded return value of hugetlb_vmtruncate() hugetlbfs: fix some comment typos hugetlbfs: correct some obsolete comments about inode i_mutex hugetlbfs: make hugepage size conversion more readable hugetlbfs: remove meaningless variable avoid_reserve hugetlbfs: correct obsolete function name in hugetlbfs_read_iter() hugetlbfs: use helper macro default_hstate in init_hugetlbfs_fs hugetlbfs: remove useless BUG_ON(!inode) in hugetlbfs_setattr() hugetlbfs: remove special hugetlbfs_set_page_dirty() mm/hugetlb: change hugetlb_reserve_pages() to type bool mm, oom: fix a comment in dump_task() mm/mempolicy: use helper range_in_vma() in queue_pages_test_walk() numa balancing: migrate on fault among multiple bound nodes mm, compaction: make fast_isolate_freepages() stay within zone mm/compaction: fix misbehaviors of fast_find_migrateblock() mm/compaction: correct deferral logic for proactive compaction mm/compaction: remove duplicated VM_BUG_ON_PAGE !PageLocked mm/compaction: remove rcu_read_lock during page compaction z3fold: simplify the zhdr initialization code in init_z3fold_page() ... |
||
Andrey Konovalov
|
f00748bfa0 |
kasan: prefix global functions with kasan_
Patch series "kasan: HW_TAGS tests support and fixes", v4. This patchset adds support for running KASAN-KUnit tests with the hardware tag-based mode and also contains a few fixes. This patch (of 15): There's a number of internal KASAN functions that are used across multiple source code files and therefore aren't marked as static inline. To avoid littering the kernel function names list with generic function names, prefix all such KASAN functions with kasan_. As a part of this change: - Rename internal (un)poison_range() to kasan_(un)poison() (no _range) to avoid name collision with a public kasan_unpoison_range(). - Rename check_memory_region() to kasan_check_range(), as it's a more fitting name. Link: https://lkml.kernel.org/r/cover.1610733117.git.andreyknvl@google.com Link: https://linux-review.googlesource.com/id/I719cc93483d4ba288a634dba80ee6b7f2809cd26 Link: https://lkml.kernel.org/r/13777aedf8d3ebbf35891136e1f2287e2f34aaba.1610733117.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Suggested-by: Marco Elver <elver@google.com> Reviewed-by: Marco Elver <elver@google.com> Reviewed-by: Alexander Potapenko <glider@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Peter Collingbourne <pcc@google.com> Cc: Evgenii Stepanov <eugenis@google.com> Cc: Branislav Rankov <Branislav.Rankov@arm.com> Cc: Kevin Brodsky <kevin.brodsky@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
a4dec04c7f |
dma-mapping updates for 5.12:
- add support to emulate processing delays in the DMA API benchmark
selftest (Barry Song)
- remove support for non-contiguous noncoherent allocations,
which aren't used and will be replaced by a different API
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Merge tag 'dma-mapping-5.12' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig:
- add support to emulate processing delays in the DMA API benchmark
selftest (Barry Song)
- remove support for non-contiguous noncoherent allocations, which
aren't used and will be replaced by a different API
* tag 'dma-mapping-5.12' of git://git.infradead.org/users/hch/dma-mapping:
dma-mapping: remove the {alloc,free}_noncoherent methods
dma-mapping: benchmark: pretend DMA is transmitting
|
||
Jason A. Donenfeld
|
d5a49aa6c3 |
wireguard: selftests: test multiple parallel streams
In order to test ndo_start_xmit being called in parallel, explicitly add
separate tests, which should all run on different cores. This should
help tease out bugs associated with queueing up packets from different
cores in parallel. Currently, it hasn't found those types of bugs, but
given future planned work, this is a useful regression to avoid.
Fixes:
|
||
|
Linus Torvalds
|
414eece95b |
clang-lto for v5.12-rc1 (part2)
- Generate __mcount_loc in objtool (Peter Zijlstra) - Support running objtool against vmlinux.o (Sami Tolvanen) - Clang LTO enablement for x86 (Sami Tolvanen) -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmA1fn8ACgkQiXL039xt wCbswQ//Zmnq912Ubyn5uPe9SOS/kumGDoqtxGzlZwo/pSB3qFArhD6G07sJ49XD nu/05ZcOda760wubnhcuK91n2fY5i/eGLXMSjfgtdVcco4Q67nPQydc+LGdhuDco FlhL8TAIwqYN1f2nJK1IggZpZFxz5r/r1Pq8q1S0oQRqDenxDBQwNtBba4B1OIxw /FE/1Hp3xwRnuJEP2jREBeY1yQ+Y1n859pZcDgSOWlTArcp8EVUi5hIWJ9DwIe73 mqnx6PcFWEYB0zLNZmZz2gpEac+ncGyme6ChayeuQfInbL5dhx97jFGt3S6/+NSY mF2zyaR/+JsGGuM8dVqH3izKCJXCEAGirrdMO1ndb9HdwS3KnYEiag2ciNWL0wm3 UEM4r0i2B14sU3pkyotKgsJdOSgorMKkQUPb2wW+OUfnkZNEWKLqylMgNXBD80l4 WG5vYQRwwFN9jRBik6Z5YFGnwGsNIoGg1F1GRNMjh6h51adYQeBN/1QJE1FJ5L4D iKzmZYqimKUINXWfI6TNyqiv9TctOt65pxnRyq+MHxfTDzHGyc3MUeCeCiR1a1yI S5QhcgfSnC/NjDA0+oYC6yRlcBtfhjtUqFTGoZ4q4q/LF1BVU1bPyIXZrROLc05s LNMMBcWbJetJxFtm/gYfiVFuNitYtxbBV1krVtsWznCA2nKGJ9w= =htKJ -----END PGP SIGNATURE----- Merge tag 'clang-lto-v5.12-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull more clang LTO updates from Kees Cook: "Clang LTO x86 enablement. Full disclosure: while this has _not_ been in linux-next (since it initially looked like the objtool dependencies weren't going to make v5.12), it has been under daily build and runtime testing by Sami for quite some time. These x86 portions have been discussed on lkml, with Peter, Josh, and others helping nail things down. The bulk of the changes are to get objtool working happily. The rest of the x86 enablement is very small. Summary: - Generate __mcount_loc in objtool (Peter Zijlstra) - Support running objtool against vmlinux.o (Sami Tolvanen) - Clang LTO enablement for x86 (Sami Tolvanen)" Link: https://lore.kernel.org/lkml/20201013003203.4168817-26-samitolvanen@google.com/ Link: https://lore.kernel.org/lkml/cover.1611263461.git.jpoimboe@redhat.com/ * tag 'clang-lto-v5.12-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: kbuild: lto: force rebuilds when switching CONFIG_LTO x86, build: allow LTO to be selected x86, cpu: disable LTO for cpu.c x86, vdso: disable LTO only for vDSO kbuild: lto: postpone objtool objtool: Split noinstr validation from --vmlinux x86, build: use objtool mcount tracing: add support for objtool mcount objtool: Don't autodetect vmlinux.o objtool: Fix __mcount_loc generation with Clang's assembler objtool: Add a pass for generating __mcount_loc |
||
|
Linus Torvalds
|
7d6beb71da |
idmapped-mounts-v5.12
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Merge tag 'idmapped-mounts-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull idmapped mounts from Christian Brauner:
"This introduces idmapped mounts which has been in the making for some
time. Simply put, different mounts can expose the same file or
directory with different ownership. This initial implementation comes
with ports for fat, ext4 and with Christoph's port for xfs with more
filesystems being actively worked on by independent people and
maintainers.
Idmapping mounts handle a wide range of long standing use-cases. Here
are just a few:
- Idmapped mounts make it possible to easily share files between
multiple users or multiple machines especially in complex
scenarios. For example, idmapped mounts will be used in the
implementation of portable home directories in
systemd-homed.service(8) where they allow users to move their home
directory to an external storage device and use it on multiple
computers where they are assigned different uids and gids. This
effectively makes it possible to assign random uids and gids at
login time.
- It is possible to share files from the host with unprivileged
containers without having to change ownership permanently through
chown(2).
- It is possible to idmap a container's rootfs and without having to
mangle every file. For example, Chromebooks use it to share the
user's Download folder with their unprivileged containers in their
Linux subsystem.
- It is possible to share files between containers with
non-overlapping idmappings.
- Filesystem that lack a proper concept of ownership such as fat can
use idmapped mounts to implement discretionary access (DAC)
permission checking.
- They allow users to efficiently changing ownership on a per-mount
basis without having to (recursively) chown(2) all files. In
contrast to chown (2) changing ownership of large sets of files is
instantenous with idmapped mounts. This is especially useful when
ownership of a whole root filesystem of a virtual machine or
container is changed. With idmapped mounts a single syscall
mount_setattr syscall will be sufficient to change the ownership of
all files.
- Idmapped mounts always take the current ownership into account as
idmappings specify what a given uid or gid is supposed to be mapped
to. This contrasts with the chown(2) syscall which cannot by itself
take the current ownership of the files it changes into account. It
simply changes the ownership to the specified uid and gid. This is
especially problematic when recursively chown(2)ing a large set of
files which is commong with the aforementioned portable home
directory and container and vm scenario.
- Idmapped mounts allow to change ownership locally, restricting it
to specific mounts, and temporarily as the ownership changes only
apply as long as the mount exists.
Several userspace projects have either already put up patches and
pull-requests for this feature or will do so should you decide to pull
this:
- systemd: In a wide variety of scenarios but especially right away
in their implementation of portable home directories.
https://systemd.io/HOME_DIRECTORY/
- container runtimes: containerd, runC, LXD:To share data between
host and unprivileged containers, unprivileged and privileged
containers, etc. The pull request for idmapped mounts support in
containerd, the default Kubernetes runtime is already up for quite
a while now: https://github.com/containerd/containerd/pull/4734
- The virtio-fs developers and several users have expressed interest
in using this feature with virtual machines once virtio-fs is
ported.
- ChromeOS: Sharing host-directories with unprivileged containers.
I've tightly synced with all those projects and all of those listed
here have also expressed their need/desire for this feature on the
mailing list. For more info on how people use this there's a bunch of
talks about this too. Here's just two recent ones:
https://www.cncf.io/wp-content/uploads/2020/12/Rootless-Containers-in-Gitpod.pdf
https://fosdem.org/2021/schedule/event/containers_idmap/
This comes with an extensive xfstests suite covering both ext4 and
xfs:
https://git.kernel.org/brauner/xfstests-dev/h/idmapped_mounts
It covers truncation, creation, opening, xattrs, vfscaps, setid
execution, setgid inheritance and more both with idmapped and
non-idmapped mounts. It already helped to discover an unrelated xfs
setgid inheritance bug which has since been fixed in mainline. It will
be sent for inclusion with the xfstests project should you decide to
merge this.
In order to support per-mount idmappings vfsmounts are marked with
user namespaces. The idmapping of the user namespace will be used to
map the ids of vfs objects when they are accessed through that mount.
By default all vfsmounts are marked with the initial user namespace.
The initial user namespace is used to indicate that a mount is not
idmapped. All operations behave as before and this is verified in the
testsuite.
Based on prior discussions we want to attach the whole user namespace
and not just a dedicated idmapping struct. This allows us to reuse all
the helpers that already exist for dealing with idmappings instead of
introducing a whole new range of helpers. In addition, if we decide in
the future that we are confident enough to enable unprivileged users
to setup idmapped mounts the permission checking can take into account
whether the caller is privileged in the user namespace the mount is
currently marked with.
The user namespace the mount will be marked with can be specified by
passing a file descriptor refering to the user namespace as an
argument to the new mount_setattr() syscall together with the new
MOUNT_ATTR_IDMAP flag. The system call follows the openat2() pattern
of extensibility.
The following conditions must be met in order to create an idmapped
mount:
- The caller must currently have the CAP_SYS_ADMIN capability in the
user namespace the underlying filesystem has been mounted in.
- The underlying filesystem must support idmapped mounts.
- The mount must not already be idmapped. This also implies that the
idmapping of a mount cannot be altered once it has been idmapped.
- The mount must be a detached/anonymous mount, i.e. it must have
been created by calling open_tree() with the OPEN_TREE_CLONE flag
and it must not already have been visible in the filesystem.
The last two points guarantee easier semantics for userspace and the
kernel and make the implementation significantly simpler.
By default vfsmounts are marked with the initial user namespace and no
behavioral or performance changes are observed.
The manpage with a detailed description can be found here:
|
||
Sami Tolvanen
|
41425ebe20 |
objtool: Split noinstr validation from --vmlinux
This change adds a --noinstr flag to objtool to allow us to specify that we're processing vmlinux.o without also enabling noinstr validation. This is needed to avoid false positives with LTO when we run objtool on vmlinux.o without CONFIG_DEBUG_ENTRY. Signed-off-by: Sami Tolvanen <samitolvanen@google.com> |
||
|
Sami Tolvanen
|
0e731dbc18 |
objtool: Don't autodetect vmlinux.o
With LTO, we run objtool on vmlinux.o, but don't want noinstr validation. This change requires --vmlinux to be passed to objtool explicitly. Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> |
||
|
Sami Tolvanen
|
18a14575ae |
objtool: Fix __mcount_loc generation with Clang's assembler
When objtool generates relocations for the __mcount_loc section, it
tries to reference __fentry__ calls by their section symbol offset.
However, this fails with Clang's integrated assembler as it may not
generate section symbols for every section. This patch looks up a
function symbol instead if the section symbol is missing, similarly
to commit
|
||
Peter Zijlstra
|
99d0021569 |
objtool: Add a pass for generating __mcount_loc
Add the --mcount option for generating __mcount_loc sections needed for dynamic ftrace. Using this pass requires the kernel to be compiled with -mfentry and CC_USING_NOP_MCOUNT to be defined in Makefile. Link: https://lore.kernel.org/lkml/20200625200235.GQ4781@hirez.programming.kicks-ass.net/ Signed-off-by: Peter Zijlstra <peterz@infradead.org> [Sami: rebased, dropped config changes, fixed to actually use --mcount, and wrote a commit message.] Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> |
||
|
Linus Torvalds
|
21a6ab2131 |
Modules updates for v5.12
Summary of modules changes for the 5.12 merge window:
- Retire EXPORT_UNUSED_SYMBOL() and EXPORT_SYMBOL_GPL_FUTURE(). These export
types were introduced between 2006 - 2008. All the of the unused symbols have
been long removed and gpl future symbols were converted to gpl quite a long
time ago, and I don't believe these export types have been used ever since.
So, I think it should be safe to retire those export types now. (Christoph Hellwig)
- Refactor and clean up some aged code cruft in the module loader (Christoph Hellwig)
- Build {,module_}kallsyms_on_each_symbol only when livepatching is enabled, as
it is the only caller (Christoph Hellwig)
- Unexport find_module() and module_mutex and fix the last module
callers to not rely on these anymore. Make module_mutex internal to
the module loader. (Christoph Hellwig)
- Harden ELF checks on module load and validate ELF structures before checking
the module signature (Frank van der Linden)
- Fix undefined symbol warning for clang (Fangrui Song)
- Fix smatch warning (Dan Carpenter)
Signed-off-by: Jessica Yu <jeyu@kernel.org>
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Merge tag 'modules-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
Pull module updates from Jessica Yu:
- Retire EXPORT_UNUSED_SYMBOL() and EXPORT_SYMBOL_GPL_FUTURE(). These
export types were introduced between 2006 - 2008. All the of the
unused symbols have been long removed and gpl future symbols were
converted to gpl quite a long time ago, and I don't believe these
export types have been used ever since. So, I think it should be safe
to retire those export types now (Christoph Hellwig)
- Refactor and clean up some aged code cruft in the module loader
(Christoph Hellwig)
- Build {,module_}kallsyms_on_each_symbol only when livepatching is
enabled, as it is the only caller (Christoph Hellwig)
- Unexport find_module() and module_mutex and fix the last module
callers to not rely on these anymore. Make module_mutex internal to
the module loader (Christoph Hellwig)
- Harden ELF checks on module load and validate ELF structures before
checking the module signature (Frank van der Linden)
- Fix undefined symbol warning for clang (Fangrui Song)
- Fix smatch warning (Dan Carpenter)
* tag 'modules-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
module: potential uninitialized return in module_kallsyms_on_each_symbol()
module: remove EXPORT_UNUSED_SYMBOL*
module: remove EXPORT_SYMBOL_GPL_FUTURE
module: move struct symsearch to module.c
module: pass struct find_symbol_args to find_symbol
module: merge each_symbol_section into find_symbol
module: remove each_symbol_in_section
module: mark module_mutex static
kallsyms: only build {,module_}kallsyms_on_each_symbol when required
kallsyms: refactor {,module_}kallsyms_on_each_symbol
module: use RCU to synchronize find_module
module: unexport find_module and module_mutex
drm: remove drm_fb_helper_modinit
powerpc/powernv: remove get_cxl_module
module: harden ELF info handling
module: Ignore _GLOBAL_OFFSET_TABLE_ when warning for undefined symbols
|
||
|
Linus Torvalds
|
a56ff24efb |
objtool updates:
- Make objtool work for big-endian cross compiles
- Make stack tracking via stack pointer memory operations match push/pop
semantics to prepare for architectures w/o PUSH/POP instructions.
- Add support for analyzing alternatives
- Improve retpoline detection and handling
- Improve assembly code coverage on x86
- Provide support for inlined stack switching
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Merge tag 'objtool-core-2021-02-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Thomas Gleixner:
- Make objtool work for big-endian cross compiles
- Make stack tracking via stack pointer memory operations match
push/pop semantics to prepare for architectures w/o PUSH/POP
instructions.
- Add support for analyzing alternatives
- Improve retpoline detection and handling
- Improve assembly code coverage on x86
- Provide support for inlined stack switching
* tag 'objtool-core-2021-02-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits)
objtool: Support stack-swizzle
objtool,x86: Additionally decode: mov %rsp, (%reg)
x86/unwind/orc: Change REG_SP_INDIRECT
x86/power: Support objtool validation in hibernate_asm_64.S
x86/power: Move restore_registers() to top of the file
x86/power: Annotate indirect branches as safe
x86/acpi: Support objtool validation in wakeup_64.S
x86/acpi: Annotate indirect branch as safe
x86/ftrace: Support objtool vmlinux.o validation in ftrace_64.S
x86/xen/pvh: Annotate indirect branch as safe
x86/xen: Support objtool vmlinux.o validation in xen-head.S
x86/xen: Support objtool validation in xen-asm.S
objtool: Add xen_start_kernel() to noreturn list
objtool: Combine UNWIND_HINT_RET_OFFSET and UNWIND_HINT_FUNC
objtool: Add asm version of STACK_FRAME_NON_STANDARD
objtool: Assume only ELF functions do sibling calls
x86/ftrace: Add UNWIND_HINT_FUNC annotation for ftrace_stub
objtool: Support retpoline jump detection for vmlinux.o
objtool: Fix ".cold" section suffix check for newer versions of GCC
objtool: Fix retpoline detection in asm code
...
|
||
|
Linus Torvalds
|
4b5f9254e4 |
kconfig for kcmp syscall
drm userspaces uses this, systemd uses this, makes sense to pull it out from the checkpoint-restore bundle. Kees reviewed this from security pov and is happy with the final version. LWN coverage: https://lwn.net/Articles/845448/ -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEb4nG6jLu8Y5XI+PfTA9ye/CYqnEFAmAzaXIACgkQTA9ye/CY qnH5FQ//eL/7a/PDICuCRIN2p2aQwHoe9d12q+01RolAgce6F9mR9SFiKGSCR+t7 daw4G/BaGxSYzvz1IqWbXDMhN87jAXV/IGs9k4OkSIcbnDmMY78EKMZB1c1t7AZo zmeAuQvmTAcBogTwC6IE9N1JwhH3fmudq4p8zZ4zLojJNSPjrwCvF/xQI/Yaw52V CTfni8mrjYJ+pZ1qn9XP3IceAFEEI27ubZj2DJU+5xpRJAdIAobo0XbVOf8XQ0uc /BRLyXFS66EDsY1wWHT6y6UXDNZgbLic0olC1aielaBJh+Wq6bQHgephxpasU5y7 cZX7XTX2N1q8j8NmgzWLYRgERqtXv0CPHKdimTs8SaUcPDGhxcnwPR6hmdQEC+i6 IjntWMERjfuyD+s6qVuc7s8WS7+Ry9OxgdVskHASqGpBvsSliXN1o02Am6WUuGsB HZxTjCe967FyL4LGU0YjobMTUUSWfYQkOBKABlvYUySNZ0ZHnSygHIWiWjC6b89A KmXiHJoocNfDlKwX6bf3OWQ+dGGFu2wo5wYzldIiqYJVidp50xdOosdRE1R6WwuG IOLCdNKdqDgtig+90/fFZ06liXZvqUdDafWgUs/g6lLquFrcq5aAIiSdR6PcPKB0 MwfWcCglLtYrxgDHvNaqnW18yRQq2TGbe+A65aXzLPp45pKP8Hk= =uiSj -----END PGP SIGNATURE----- Merge tag 'topic/kcmp-kconfig-2021-02-22' of git://anongit.freedesktop.org/drm/drm Pull kcmp kconfig update from Daniel Vetter: "Make the kcmp syscall available independently of checkpoint/restore. drm userspaces uses this, systemd uses this, so makes sense to pull it out from the checkpoint-restore bundle. Kees reviewed this from security pov and is happy with the final version" Link: https://lwn.net/Articles/845448/ * tag 'topic/kcmp-kconfig-2021-02-22' of git://anongit.freedesktop.org/drm/drm: kcmp: Support selection of SYS_kcmp without CHECKPOINT_RESTORE |
||
|
Linus Torvalds
|
b12b472496 |
powerpc updates for 5.12
A large series adding wrappers for our interrupt handlers, so that irq/nmi/user
tracking can be isolated in the wrappers rather than spread in each handler.
Conversion of the 32-bit syscall handling into C.
A series from Nick to streamline our TLB flushing when using the Radix MMU.
Switch to using queued spinlocks by default for 64-bit server CPUs.
A rework of our PCI probing so that it happens later in boot, when more generic
infrastructure is available.
Two small fixes to allow 32-bit little-endian processes to run on 64-bit
kernels.
Other smaller features, fixes & cleanups.
Thanks to:
Alexey Kardashevskiy, Ananth N Mavinakayanahalli, Aneesh Kumar K.V, Athira
Rajeev, Bhaskar Chowdhury, Cédric Le Goater, Chengyang Fan, Christophe Leroy,
Christopher M. Riedl, Fabiano Rosas, Florian Fainelli, Frederic Barrat, Ganesh
Goudar, Hari Bathini, Jiapeng Chong, Joseph J Allen, Kajol Jain, Markus
Elfring, Michal Suchanek, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Oliver
O'Halloran, Pingfan Liu, Po-Hsu Lin, Qian Cai, Ram Pai, Randy Dunlap, Sandipan
Das, Stephen Rothwell, Tyrel Datwyler, Will Springer, Yury Norov, Zheng
Yongjun.
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Merge tag 'powerpc-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- A large series adding wrappers for our interrupt handlers, so that
irq/nmi/user tracking can be isolated in the wrappers rather than
spread in each handler.
- Conversion of the 32-bit syscall handling into C.
- A series from Nick to streamline our TLB flushing when using the
Radix MMU.
- Switch to using queued spinlocks by default for 64-bit server CPUs.
- A rework of our PCI probing so that it happens later in boot, when
more generic infrastructure is available.
- Two small fixes to allow 32-bit little-endian processes to run on
64-bit kernels.
- Other smaller features, fixes & cleanups.
Thanks to: Alexey Kardashevskiy, Ananth N Mavinakayanahalli, Aneesh
Kumar K.V, Athira Rajeev, Bhaskar Chowdhury, Cédric Le Goater, Chengyang
Fan, Christophe Leroy, Christopher M. Riedl, Fabiano Rosas, Florian
Fainelli, Frederic Barrat, Ganesh Goudar, Hari Bathini, Jiapeng Chong,
Joseph J Allen, Kajol Jain, Markus Elfring, Michal Suchanek, Nathan
Lynch, Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran, Pingfan Liu,
Po-Hsu Lin, Qian Cai, Ram Pai, Randy Dunlap, Sandipan Das, Stephen
Rothwell, Tyrel Datwyler, Will Springer, Yury Norov, and Zheng Yongjun.
* tag 'powerpc-5.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (188 commits)
powerpc/perf: Adds support for programming of Thresholding in P10
powerpc/pci: Remove unimplemented prototypes
powerpc/uaccess: Merge raw_copy_to_user_allowed() into raw_copy_to_user()
powerpc/uaccess: Merge __put_user_size_allowed() into __put_user_size()
powerpc/uaccess: get rid of small constant size cases in raw_copy_{to,from}_user()
powerpc/64: Fix stack trace not displaying final frame
powerpc/time: Remove get_tbl()
powerpc/time: Avoid using get_tbl()
spi: mpc52xx: Avoid using get_tbl()
powerpc/syscall: Avoid storing 'current' in another pointer
powerpc/32: Handle bookE debugging in C in syscall entry/exit
powerpc/syscall: Do not check unsupported scv vector on PPC32
powerpc/32: Remove the counter in global_dbcr0
powerpc/32: Remove verification of MSR_PR on syscall in the ASM entry
powerpc/syscall: implement system call entry/exit logic in C for PPC32
powerpc/32: Always save non volatile GPRs at syscall entry
powerpc/syscall: Change condition to check MSR_RI
powerpc/syscall: Save r3 in regs->orig_r3
powerpc/syscall: Use is_compat_task()
powerpc/syscall: Make interrupt.c buildable on PPC32
...
|
||
|
Linus Torvalds
|
c958423470 |
Tracing updates for 5.12
- Update to the way irqs and preemption is tracked via the trace event PC field
- Fix handling of unregistering event failing due to allocate memory.
This is only triggered by failure injection, as it is pretty much guaranteed
to have less than a page allocation succeed.
- Do not show the useless "filter" or "enable" files for the "ftrace" trace
system, as they have no effect on doing anything.
- Add a warning if kprobes are registered more than once.
- Synthetic events now have their fields parsed by semicolons.
Old formats without semicolons will still work, but new features will
require them.
- New option to allow trace events to show %p without hashing in trace file.
The trace file can only be read by root, and reading the raw event buffer
did not have any pointers hashed, so this does not expose anything new.
- New directory in tools called tools/tracing, where a new tool that reads
sequential latency reports from the ftrace latency tracers.
- Other minor fixes and cleanups.
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Merge tag 'trace-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
- Update to the way irqs and preemption is tracked via the trace event
PC field
- Fix handling of unregistering event failing due to allocate memory.
This is only triggered by failure injection, as it is pretty much
guaranteed to have less than a page allocation succeed.
- Do not show the useless "filter" or "enable" files for the "ftrace"
trace system, as they have no effect on doing anything.
- Add a warning if kprobes are registered more than once.
- Synthetic events now have their fields parsed by semicolons. Old
formats without semicolons will still work, but new features will
require them.
- New option to allow trace events to show %p without hashing in trace
file. The trace file can only be read by root, and reading the raw
event buffer did not have any pointers hashed, so this does not
expose anything new.
- New directory in tools called tools/tracing, where a new tool that
reads sequential latency reports from the ftrace latency tracers.
- Other minor fixes and cleanups.
* tag 'trace-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (33 commits)
kprobes: Fix to delay the kprobes jump optimization
tracing/tools: Add the latency-collector to tools directory
tracing: Make hash-ptr option default
tracing: Add ptr-hash option to show the hashed pointer value
tracing: Update the stage 3 of trace event macro comment
tracing: Show real address for trace event arguments
selftests/ftrace: Add '!event' synthetic event syntax check
selftests/ftrace: Update synthetic event syntax errors
tracing: Add a backward-compatibility check for synthetic event creation
tracing: Update synth command errors
tracing: Rework synthetic event command parsing
tracing/dynevent: Delegate parsing to create function
kprobes: Warn if the kprobe is reregistered
ftrace: Remove unused ftrace_force_update()
tracepoints: Code clean up
tracepoints: Do not punish non static call users
tracepoints: Remove unnecessary "data_args" macro parameter
tracing: Do not create "enable" or "filter" files for ftrace event subsystem
kernel: trace: preemptirq_delay_test: add cpu affinity
tracepoint: Do not fail unregistering a probe due to memory failure
...
|
||
|
Linus Torvalds
|
3a36281a17 |
New features:
- Support instruction latency in 'perf report', with both memory latency
(weight) and instruction latency information, users can locate expensive load
instructions and understand time spent in different stages.
- Extend 'perf c2c' to display the number of loads which were blocked by data
or address conflict.
- Add 'perf stat' support for L2 topdown events in systems such as Intel's
Sapphire rapids server.
- Add support for PERF_SAMPLE_CODE_PAGE_SIZE in various tools, as a sort key, for instance:
perf report --stdio --sort=comm,symbol,code_page_size
- New 'perf daemon' command to run long running sessions while providing a way to control
the enablement of events without restarting a traditional 'perf record' session.
- Enable counting events for BPF programs in 'perf stat' just like for other
targets (tid, cgroup, cpu, etc), e.g.:
# perf stat -e ref-cycles,cycles -b 254 -I 1000
1.487903822 115,200 ref-cycles
1.487903822 86,012 cycles
2.489147029 80,560 ref-cycles
2.489147029 73,784 cycles
^C#
The example above counts 'cycles' and 'ref-cycles' of BPF program of id 254.
It is similar to bpftool-prog-profile command, but more flexible.
- Support the new layout for PERF_RECORD_MMAP2 to carry the DSO build-id using infrastructure
generalised from the eBPF subsystem, removing the need for traversing the perf.data file
to collect build-ids at the end of 'perf record' sessions and helping with long running
sessions where binaries can get replaced in updates, leading to possible mis-resolution
of symbols.
- Support filtering by hex address in 'perf script'.
- Support DSO filter in 'perf script', like in other perf tools.
- Add namespaces support to 'perf inject'
- Add support for SDT (Dtrace Style Markers) events on ARM64.
perf record:
- Fix handling of eventfd() when draining a buffer in 'perf record'.
- Improvements to the generation of metadata events for pre-existing threads (mmaps, comm, etc),
speeding up the work done at the start of system wide or per CPU 'perf record' sessions.
Hardware tracing:
- Initial support for tracing KVM with Intel PT.
- Intel PT fixes for IPC
- Support Intel PT PSB (synchronization packets) events.
- Automatically group aux-output events to overcome --filter syntax.
- Enable PERF_SAMPLE_DATA_SRC on ARMs SPE.
- Update ARM's CoreSight hardware tracing OpenCSD library to v1.0.0.
perf annotate TUI:
- Fix handling of 'k' ("show line number") hotkey
- Fix jump parsing for C++ code.
perf probe:
- Add protection to avoid endless loop.
cgroups:
- Avoid reading cgroup mountpoint multiple times, caching it.
- Fix handling of cgroup v1/v2 in mixed hierarchy.
Symbol resolving:
- Add OCaml symbol demangling.
- Further fixes for handling PE executables when using perf with Wine and .exe/.dll files.
- Fix 'perf unwind' DSO handling.
- Resolve symbols against debug file first, to deal with artifacts related to LTO.
- Fix gap between kernel end and module start on powerpc.
Reporting tools:
- The DSO filter shouldn't show samples in unresolved maps.
- Improve debuginfod support in various tools.
build ids:
- Fix 16-byte build ids in 'perf buildid-cache', add a 'perf test' entry for that case.
perf test:
- Support for PERF_SAMPLE_WEIGHT_STRUCT.
- Add test case for PERF_SAMPLE_CODE_PAGE_SIZE.
- Shell based tests for 'perf daemon's commands ('start', 'stop, 'reconfig', 'list', etc).
- ARM cs-etm 'perf test' fixes.
- Add parse-metric memory bandwidth testcase.
Compiler related:
- Fix 'perf probe' kretprobe issue caused by gcc 11 bug when used with -fpatchable-function-entry.
- Fix ARM64 build with gcc 11's -Wformat-overflow.
- Fix unaligned access in sample parsing test.
- Fix printf conversion specifier for IP addresses on arm64, s390 and powerpc.
Arch specific:
- Support exposing Performance Monitor Counter SPRs as part of extended regs on powerpc.
- Add JSON 'perf stat' metrics for ARM64's imx8mp, imx8mq and imx8mn DDR, fix imx8mm ones.
- Fix common and uarch events for ARM64's A76 and Ampere eMag
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-for-v5.12-2020-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Pull perf tool updates from Arnaldo Carvalho de Melo:
"New features:
- Support instruction latency in 'perf report', with both memory
latency (weight) and instruction latency information, users can
locate expensive load instructions and understand time spent in
different stages.
- Extend 'perf c2c' to display the number of loads which were blocked
by data or address conflict.
- Add 'perf stat' support for L2 topdown events in systems such as
Intel's Sapphire rapids server.
- Add support for PERF_SAMPLE_CODE_PAGE_SIZE in various tools, as a
sort key, for instance:
perf report --stdio --sort=comm,symbol,code_page_size
- New 'perf daemon' command to run long running sessions while
providing a way to control the enablement of events without
restarting a traditional 'perf record' session.
- Enable counting events for BPF programs in 'perf stat' just like
for other targets (tid, cgroup, cpu, etc), e.g.:
# perf stat -e ref-cycles,cycles -b 254 -I 1000
1.487903822 115,200 ref-cycles
1.487903822 86,012 cycles
2.489147029 80,560 ref-cycles
2.489147029 73,784 cycles
^C
The example above counts 'cycles' and 'ref-cycles' of BPF program
of id 254. It is similar to bpftool-prog-profile command, but more
flexible.
- Support the new layout for PERF_RECORD_MMAP2 to carry the DSO
build-id using infrastructure generalised from the eBPF subsystem,
removing the need for traversing the perf.data file to collect
build-ids at the end of 'perf record' sessions and helping with
long running sessions where binaries can get replaced in updates,
leading to possible mis-resolution of symbols.
- Support filtering by hex address in 'perf script'.
- Support DSO filter in 'perf script', like in other perf tools.
- Add namespaces support to 'perf inject'
- Add support for SDT (Dtrace Style Markers) events on ARM64.
perf record:
- Fix handling of eventfd() when draining a buffer in 'perf record'.
- Improvements to the generation of metadata events for pre-existing
threads (mmaps, comm, etc), speeding up the work done at the start
of system wide or per CPU 'perf record' sessions.
Hardware tracing:
- Initial support for tracing KVM with Intel PT.
- Intel PT fixes for IPC
- Support Intel PT PSB (synchronization packets) events.
- Automatically group aux-output events to overcome --filter syntax.
- Enable PERF_SAMPLE_DATA_SRC on ARMs SPE.
- Update ARM's CoreSight hardware tracing OpenCSD library to v1.0.0.
perf annotate TUI:
- Fix handling of 'k' ("show line number") hotkey
- Fix jump parsing for C++ code.
perf probe:
- Add protection to avoid endless loop.
cgroups:
- Avoid reading cgroup mountpoint multiple times, caching it.
- Fix handling of cgroup v1/v2 in mixed hierarchy.
Symbol resolving:
- Add OCaml symbol demangling.
- Further fixes for handling PE executables when using perf with Wine
and .exe/.dll files.
- Fix 'perf unwind' DSO handling.
- Resolve symbols against debug file first, to deal with artifacts
related to LTO.
- Fix gap between kernel end and module start on powerpc.
Reporting tools:
- The DSO filter shouldn't show samples in unresolved maps.
- Improve debuginfod support in various tools.
build ids:
- Fix 16-byte build ids in 'perf buildid-cache', add a 'perf test'
entry for that case.
perf test:
- Support for PERF_SAMPLE_WEIGHT_STRUCT.
- Add test case for PERF_SAMPLE_CODE_PAGE_SIZE.
- Shell based tests for 'perf daemon's commands ('start', 'stop,
'reconfig', 'list', etc).
- ARM cs-etm 'perf test' fixes.
- Add parse-metric memory bandwidth testcase.
Compiler related:
- Fix 'perf probe' kretprobe issue caused by gcc 11 bug when used
with -fpatchable-function-entry.
- Fix ARM64 build with gcc 11's -Wformat-overflow.
- Fix unaligned access in sample parsing test.
- Fix printf conversion specifier for IP addresses on arm64, s390 and
powerpc.
Arch specific:
- Support exposing Performance Monitor Counter SPRs as part of
extended regs on powerpc.
- Add JSON 'perf stat' metrics for ARM64's imx8mp, imx8mq and imx8mn
DDR, fix imx8mm ones.
- Fix common and uarch events for ARM64's A76 and Ampere eMag"
* tag 'perf-tools-for-v5.12-2020-02-19' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (148 commits)
perf buildid-cache: Don't skip 16-byte build-ids
perf buildid-cache: Add test for 16-byte build-id
perf symbol: Remove redundant libbfd checks
perf test: Output the sub testing result in cs-etm
perf test: Suppress logs in cs-etm testing
perf tools: Fix arm64 build error with gcc-11
perf intel-pt: Add documentation for tracing virtual machines
perf intel-pt: Split VM-Entry and VM-Exit branches
perf intel-pt: Adjust sample flags for VM-Exit
perf intel-pt: Allow for a guest kernel address filter
perf intel-pt: Support decoding of guest kernel
perf machine: Factor out machine__idle_thread()
perf machine: Factor out machines__find_guest()
perf intel-pt: Amend decoder to track the NR flag
perf intel-pt: Retain the last PIP packet payload as is
perf intel_pt: Add vmlaunch and vmresume as branches
perf script: Add branch types for VM-Entry and VM-Exit
perf auxtrace: Automatically group aux-output events
perf test: Fix unaligned access in sample parsing test
perf tools: Support arch specific PERF_SAMPLE_WEIGHT_STRUCT processing
...
|
||
|
Linus Torvalds
|
b2bec7d8a4 |
printk changes for 5.12
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||
|
Linus Torvalds
|
783955f03d |
linux-kselftest-kunit-5.12-rc1
This KUnit update for Linux 5.12-rc1 consists of consists of:
-- support for filtering test suites using glob from Daniel Latypov.
"kunit_filter.glob" command line option is passed to the UML
kernel, which currently only supports filtering by suite name.
This support allows running different subsets of tests, e.g.
$ ./tools/testing/kunit/kunit.py build
$ ./tools/testing/kunit/kunit.py exec 'list*'
$ ./tools/testing/kunit/kunit.py exec 'kunit*'
-- several fixes and cleanups also from Daniel Latypov.
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Merge tag 'linux-kselftest-kunit-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull KUnit updates from Shuah Khan
- support for filtering test suites using glob from Daniel Latypov.
"kunit_filter.glob" command line option is passed to the UML
kernel, which currently only supports filtering by suite name.
This support allows running different subsets of tests, e.g.
$ ./tools/testing/kunit/kunit.py build
$ ./tools/testing/kunit/kunit.py exec 'list*'
$ ./tools/testing/kunit/kunit.py exec 'kunit*'
- several fixes and cleanups also from Daniel Latypov.
* tag 'linux-kselftest-kunit-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: tool: fix unintentional statefulness in run_kernel()
kunit: tool: add support for filtering suites by glob
kunit: add kunit.filter_glob cmdline option to filter suites
kunit: don't show `1 == 1` in failed assertion messages
kunit: make kunit_tool accept optional path to .kunitconfig fragment
Documentation: kunit: add tips.rst for small examples
KUnit: Docs: make start.rst example Kconfig follow style.rst
kunit: tool: simplify kconfig is_subset_of() logic
minor: kunit: tool: fix unit test so it can run from non-root dir
kunit: tool: use `with open()` in unit test
kunit: tool: stop using bare asserts in unit test
kunit: tool: fix unit test cleanup handling
|
||
|
Linus Torvalds
|
80215095ce |
linux-kselftest-next-5.12-rc1
This Kselftest update for Linux 5.12-rc1 consists of: - dmabuf-heaps test fixes and cleanups from John Stultz. - seccomp test fix to accept any valid fd in user_notification_addfd. - Minor fixes to breakpoints and vDSO tests. - Minor code cleanups to ipc and x86 tests. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAmAtpXcACgkQCwJExA0N QxxJ3w//d0VQGTMp7XBmEx04Tlh31grs/pHorvN5t9TOn/3QVq1OQhHIIq7Y6Zgx hOjKOldCzgILvNTTstCfwwQv6BA0EkD0+j27yXUOHUEB0h5bNbdirP2zohxvXq0x 1MTch89rO+fFyUeeqZujs1EuMhNirENKp8Dpbe3Lw6wdBSqlkcZ/AfZJGIXlZKw2 1rIaqk80eNhXnzLSFGS/zUJCmHwxpu+xp5a6n1qNk/SYGWWUbUzyanSfCSkH/Znt 0zqG1EI6rgziUHI7Nscggj7pLQgB+udGS64Nk3RqrX85b0bfVDK947znCrlkaa5S YqSf/ldsK1AyE3qFW6MoK/ZWk0z9iLFuS/+EjWP5FlM85PDTG8UPgy6pOaVE/XrN 2z4pJadUtItLtWMYiU9x7fY9BYk679a3UJaWyW1265VZkBk4UjbCA3Xz4Y/e4RSp K6UqCAZ/OwkDFRpSt1j8PSvm3Xi17qUJZyG+TZf7lzkL2kSOnj9kjHXfwrNpud2w dk/F8Fb0uwgaPY1iRfKSQCUWvJR/ze9FcmY7+hm12k5xKH17izidutDChV9L1apn cB5mHoyIEW9v/rPFPLubTy6mv9VdJKTmGg2BeT6FL/9FkbtLcW0tvyZoKzRpy/vv HLi52H72HCuEGOVMmw4439uwx1j89igewUAYzm6/lRCjpjI8f+4= =CTFH -----END PGP SIGNATURE----- Merge tag 'linux-kselftest-next-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest updates from Shuah Khan: - dmabuf-heaps test fixes and cleanups from John Stultz - seccomp test fix to accept any valid fd in user_notification_addfd - Minor fixes to breakpoints and vDSO tests - Minor code cleanups to ipc and x86 tests * tag 'linux-kselftest-next-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/seccomp: Accept any valid fd in user_notification_addfd selftests/timens: add futex binary to .gitignore selftests: breakpoints: Use correct error messages in breakpoint_test_arm64.c selftests/vDSO: fix ABI selftest on riscv selftests/x86/ldt_gdt: remove unneeded semicolon selftests/ipc: remove unneeded semicolon kselftests: dmabuf-heaps: Add extra checking that allocated buffers are zeroed kselftests: dmabuf-heaps: Cleanup test output kselftests: dmabuf-heaps: Softly fail if don't find a vgem device kselftests: dmabuf-heaps: Add clearer checks on DMABUF_BEGIN/END_SYNC kselftests: dmabuf-heaps: Fix Makefile's inclusion of the kernel's usr/include dir |
||
|
Linus Torvalds
|
0e63a5c6ba |
It has been a relatively quiet cycle in docsland.
- As promised, the minimum Sphinx version to build the docs is now 1.7,
and we have dropped support for Python 2 entirely. That allowed the
removal of a bunch of compatibility code.
- A set of treewide warning fixups from Mauro that I applied after it
became clear nobody else was going to deal with them.
- The automarkup mechanism can now create cross-references from relative
paths to RST files.
- More translations, typo fixes, and warning fixes.
No conflicts with any other tree as far as I know.
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Merge tag 'docs-5.12' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"It has been a relatively quiet cycle in docsland.
- As promised, the minimum Sphinx version to build the docs is now
1.7, and we have dropped support for Python 2 entirely. That
allowed the removal of a bunch of compatibility code.
- A set of treewide warning fixups from Mauro that I applied after it
became clear nobody else was going to deal with them.
- The automarkup mechanism can now create cross-references from
relative paths to RST files.
- More translations, typo fixes, and warning fixes"
* tag 'docs-5.12' of git://git.lwn.net/linux: (75 commits)
docs: kernel-hacking: be more civil
docs: Remove the Microsoft rhetoric
Documentation/admin-guide: kernel-parameters: Update nohlt section
doc/admin-guide: fix spelling mistake: "perfomance" -> "performance"
docs: Document cross-referencing using relative path
docs: Enable usage of relative paths to docs on automarkup
docs: thermal: fix spelling mistakes
Documentation: admin-guide: Update kvm/xen config option
docs: Make syscalls' helpers naming consistent
coding-style.rst: Avoid comma statements
Documentation: /proc/loadavg: add 3 more field descriptions
Documentation/submitting-patches: Add blurb about backtraces in commit messages
Docs: drop Python 2 support
Move our minimum Sphinx version to 1.7
Documentation: input: define ABS_PRESSURE/ABS_MT_PRESSURE resolution as grams
scripts/kernel-doc: add internal hyperlink to DOC: sections
Update Documentation/admin-guide/sysctl/fs.rst
docs: Update DTB format references
docs: zh_CN: add iio index.rst translation
docs/zh_CN: add iio ep93xx_adc.rst translation
...
|
||
|
Peter Zijlstra
|
724c8a23d5 |
objtool: Fix stack-swizzle for FRAME_POINTER=y
When objtool encounters the stack-swizzle:
mov %rsp, (%[tos])
mov %[tos], %rsp
...
pop %rsp
Inside a FRAME_POINTER=y build, things go a little screwy because
clearly we're not adjusting the cfa->base. This then results in the
pop %rsp not being detected as a restore of cfa->base so it will turn
into a regular POP and offset the stack, resulting in:
kernel/softirq.o: warning: objtool: do_softirq()+0xdb: return with modified stack frame
Therefore, have "mov %[tos], %rsp" act like a PUSH (it sorta is
anyway) to balance the things out. We're not too concerned with the
actual stack_size for frame-pointer builds, since we don't generate
ORC data for them anyway.
Fixes:
|
||
|
Linus Torvalds
|
3672ac8ac0 |
RDMA 5.12 merge window pull request
- Driver updates and bug fixes: siw, hns, bnxt_re, mlx5, efa
- Significant rework in rxe to get it ready to have XRC support added
- Several rts bug fixes
- Big series to get to 'make W=1' cleanness, primarily updating kdocs
- Support for creating a RDMA MR from a DMABUF fd to allow PCI peer to
peer transfers to GPU VRAM
- Device disassociation now works properly with umad
- Work to support more than 255 ports on a RDMA device
- Further support for the new HNS HIP09 hardware
- Coding style cleanups: comma to semicolon, unneded semicolon/blank
lines, remove 'h' printk format, don't check for NULL before kfree,
use true/false for bool.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma updates from Jason Gunthorpe:
"This is quite a small cycle, if not for Lee's 70 patches cleaning the
kdocs it would be well below typical for patch count.
Most of the interesting work here was in the HNS and rxe drivers which
got fairly major internal changes.
Summary:
- Driver updates and bug fixes: siw, hns, bnxt_re, mlx5, efa
- Significant rework in rxe to get it ready to have XRC support added
- Several rts bug fixes
- Big series to get to 'make W=1' cleanness, primarily updating kdocs
- Support for creating a RDMA MR from a DMABUF fd to allow PCI peer
to peer transfers to GPU VRAM
- Device disassociation now works properly with umad
- Work to support more than 255 ports on a RDMA device
- Further support for the new HNS HIP09 hardware
- Coding style cleanups: comma to semicolon, unneded semicolon/blank
lines, remove 'h' printk format, don't check for NULL before kfree,
use true/false for bool"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (205 commits)
RDMA/rtrs-srv: Do not pass a valid pointer to PTR_ERR()
RDMA/srp: Fix support for unpopulated and unbalanced NUMA nodes
RDMA/mlx5: Fail QP creation if the device can not support the CQE TS
RDMA/mlx5: Allow CQ creation without attached EQs
RDMA/rtrs-srv-sysfs: fix missing put_device
RDMA/rtrs-srv: fix memory leak by missing kobject free
RDMA/rtrs: Only allow addition of path to an already established session
RDMA/rtrs-srv: Fix stack-out-of-bounds
RDMA/rxe: Remove unused pkt->offset
RDMA/ucma: Fix use-after-free bug in ucma_create_uevent
RDMA/core: Fix kernel doc warnings for ib_port_immutable_read()
RDMA/qedr: Use true and false for bool variable
RDMA/hns: Adjust definition of FRMR fields
RDMA/hns: Refactor process of posting CMDQ
RDMA/hns: Adjust fields and variables about CMDQ tail/head
RDMA/hns: Remove redundant operations on CMDQ
RDMA/hns: Fixes missing error code of CMDQ
RDMA/hns: Remove unused member and variable of CMDQ
RDMA/ipoib: Remove racy Subnet Manager sendonly join checks
RDMA/mlx5: Support 400Gbps IB rate in mlx5 driver
...
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||
|
Linus Torvalds
|
882d6edfc4 |
gpio updates for v5.12
- new driver for the Toshiba Visconti platform
- rework of interrupt handling in gpio-tegra
- updates for GPIO selftests: we're now using the character device to perform
the subsystem checks
- support for a new rcar variant + some code refactoring
- refactoring of gpio-ep93xx
- SPDX License identifier has been updated in the uapi header so that userspace
programs bundling it can become fully REUSE-compliant
- improvements to pwm handling in gpio-mvebu
- support for interrupt handling and power management for gpio-xilinx as well
as some code refactoring
- support for a new chip variant in gpio-pca953x
- removal of drivers: zte xs & intel-mid and removal of leftovers from
intel-msic
- impovements to intel drivers pulled from Andy Shevchenko
- improvements to the gpio-aggregator virtual GPIO driver
- and several minor tweaks and fixes to code and documentation all over the
place
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Merge tag 'gpio-updates-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"It's been a relatively calm release cycle and we're actually removing
more code than we're adding.
Summary:
- new driver for the Toshiba Visconti platform
- rework of interrupt handling in gpio-tegra
- updates for GPIO selftests: we're now using the character device to
perform the subsystem checks
- support for a new rcar variant + some code refactoring
- refactoring of gpio-ep93xx
- SPDX License identifier has been updated in the uapi header so that
userspace programs bundling it can become fully REUSE-compliant
- improvements to pwm handling in gpio-mvebu
- support for interrupt handling and power management for gpio-xilinx
as well as some code refactoring
- support for a new chip variant in gpio-pca953x
- removal of drivers: zte xs & intel-mid and removal of leftovers
from intel-msic
- impovements to intel drivers pulled from Andy Shevchenko
- improvements to the gpio-aggregator virtual GPIO driver
- and several minor tweaks and fixes to code and documentation all
over the place"
* tag 'gpio-updates-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (71 commits)
gpio: pcf857x: Fix missing first interrupt
gpio: ep93xx: refactor base IRQ number
gpio: ep93xx: refactor ep93xx_gpio_add_bank
gpio: ep93xx: Fix typo s/hierarchial/hierarchical
gpio: ep93xx: drop to_irq binding
gpio: ep93xx: Fix wrong irq numbers in port F
gpio: uapi: use the preferred SPDX license identifier
gpio: gpio-xilinx: Add check if width exceeds 32
gpio: gpio-xilinx: Add support for suspend and resume
gpio: gpio-xilinx: Add interrupt support
gpio: gpio-xilinx: Reduce spinlock array to array
gpio: gpio-xilinx: Simplify with dev_err_probe()
gpio: msic: Drop driver from Makefile
gpio: wcove: Split out to_ireg() helper and deduplicate the code
gpio: wcove: Switch to use regmap_set_bits(), regmap_clear_bits()
gpio: wcove: Get rid of error prone casting in IRQ handler
gpio: intel-mid: Remove driver for deprecated platform
gpio: msic: Remove driver for deprecated platform
gpio: aggregator: Remove trailing comma in terminator entries
gpio: aggregator: Use compound literal from the header
...
|