korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-14 07:44:21 +08:00
Code Issues Packages Projects Releases Wiki Activity
c42a6e6870
linux/scripts
History
Steven Rostedt (Google) c42a6e6870 ftrace/scripts: Update the instructions for ftrace-bisect.sh 
commit 7ae4ba7195 upstream.

The instructions for the ftrace-bisect.sh script, which is used to find
what function is being traced that is causing a kernel crash, and possibly
a triple fault reboot, uses the old method. In 5.1, a new feature was
added that let the user write in the index into available_filter_functions
that maps to the function a user wants to set in set_ftrace_filter (or
set_ftrace_notrace). This takes O(1) to set, as suppose to writing a
function name, which takes O(n) (where n is the number of functions in
available_filter_functions).

The ftrace-bisect.sh requires setting half of the functions in
available_filter_functions, which is O(n^2) using the name method to enable
and can take several minutes to complete. The number method is O(n) which
takes less than a second to complete. Using the number method for any
kernel 5.1 and after is the proper way to do the bisect.

Update the usage to reflect the new change, as well as using the
/sys/kernel/tracing path instead of the obsolete debugfs path.

Link: https://lkml.kernel.org/r/20230123112252.022003dd@gandalf.local.home

Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Fixes: f79b3f3385 ("ftrace: Allow enabling of filters via index of available_filter_functions")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-02-01 08:23:22 +01:00
..
atomic Merge branch 'kcsan' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into locking/core 2020-10-09 08:56:02 +02:00
basic kbuild: introduce hostprogs-always-y and userprogs-always-y 2020-08-10 01:32:59 +09:00
clang-tools gen_compile_commands: fix missing 'sys' package 2021-09-22 12:27:58 +02:00
coccinelle Merge branch 'for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux 2020-10-18 14:20:35 -07:00
dtc scripts/dtc: Call pkg-config POSIXly correct 2022-04-08 14:40:15 +02:00
dummy-tools kbuild: dummy-tools: avoid tmpdir leak in dummy gcc 2022-08-29 11:29:54 +02:00
gcc-plugins gcc-plugins: latent_entropy: use /dev/urandom 2022-04-20 09:23:26 +02:00
gdb scripts/gdb: change kernel config dumping method 2022-06-14 18:32:45 +02:00
genksyms genksyms: keywords: Use __restrict not _restrict 2020-08-18 20:16:46 +09:00
kconfig kconfig: fix failing to generate auto.conf 2022-02-23 12:01:07 +01:00
ksymoops
mod modpost: fix section mismatch check for exported init/exit sections 2022-06-29 08:59:54 +02:00
package kbuild: rpm-pkg: fix breakage when V=1 is used 2022-10-26 13:25:43 +02:00
selinux selinux: use "grep -E" instead of "egrep" 2022-10-26 13:25:17 +02:00
tracing ftrace/scripts: Update the instructions for ftrace-bisect.sh 2023-02-01 08:23:22 +01:00
.gitignore kbuild: preprocess module linker script 2020-09-25 00:36:41 +09:00
adjust_autoksyms.sh kbuild: split adjust_autoksyms.sh in two parts 2020-03-03 20:49:21 +09:00
asn1_compiler.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36 2019-05-24 17:27:11 +02:00
bin2c.c
bloat-o-meter scripts: switch explicitly to Python 3 2021-05-22 11:40:55 +02:00
bootgraph.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 391 2019-06-05 17:37:11 +02:00
bpf_helpers_doc.py bpf: Add struct bpf_redir_neigh forward declaration to BPF helper defs 2020-10-29 15:19:04 +01:00
cc-can-link.sh
check_extable.sh
check-sysctl-docs docs: add a script to check sysctl docs 2020-02-25 03:35:16 -07:00
checkincludes.pl
checkkconfigsymbols.py kconfig: remove '---help---' support 2020-08-14 13:30:03 +09:00
checkpatch.pl checkpatch: fix unescaped left brace 2020-12-30 11:53:56 +01:00
checkstack.pl scripts/checkstack.pl: fix arm sp regex 2020-05-26 00:03:16 +09:00
checksyscalls.sh
checkversion.pl
clang-version.sh
cleanfile
cleanpatch
coccicheck scripts: coccicheck: Change default condition for parallelism 2020-10-12 10:37:56 +02:00
config tweewide: Fix most Shebang lines 2021-05-22 11:40:55 +02:00
const_structs.checkpatch const_structs.checkpatch: add pinctrl_ops and pinmux_ops 2020-10-16 11:11:21 -07:00
decode_stacktrace.sh scripts/decode_stacktrace.sh: guess path to vmlinux by release name 2020-08-07 11:33:21 -07:00
decodecode scripts/decodecode: add the capability to supply the program counter 2020-10-13 18:38:26 -07:00
depmod.sh depmod: handle the case of /sbin/depmod without /sbin in PATH 2021-01-12 20:18:16 +01:00
dev-needs.sh scripts/dev-needs: Add script to list device dependencies 2020-09-04 18:19:37 +02:00
diffconfig scripts: switch explicitly to Python 3 2021-05-22 11:40:55 +02:00
documentation-file-ref-check scripts: documentation-file-ref-check: Add line break before exit 2020-04-15 15:13:13 -06:00
export_report.pl modpost: move the namespace field in Module.symvers last 2020-03-17 08:59:03 +09:00
extract_xc3028.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 339 2019-06-05 17:37:07 +02:00
extract-cert.c cert host tools: Stop complaining about deprecated OpenSSL functions 2022-11-16 09:57:17 +01:00
extract-ikconfig
extract-module-sig.pl
extract-sys-certs.pl
extract-vmlinux treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 378 2019-06-05 17:37:10 +02:00
faddr2line scripts/faddr2line: Fix regression in name resolution on ppc64le 2022-12-08 11:23:54 +01:00
file-size.sh
find-unused-docs.sh scripts/find-unused-docs: Fix massive false positives 2020-01-27 14:25:06 -07:00
gcc-goto.sh
gcc-ld
gcc-version.sh
gcc-x86_32-has-stack-protector.sh
gcc-x86_64-has-stack-protector.sh
gen_autoksyms.sh kbuild: fix CONFIG_TRIM_UNUSED_KSYMS build for ppc64 2021-02-26 10:13:01 +01:00
gen_ksymdeps.sh kbuild: Fix 'no symbols' warning when CONFIG_TRIM_UNUSD_KSYMS=y 2021-09-18 13:40:16 +02:00
get_abi.pl tweewide: Fix most Shebang lines 2021-05-22 11:40:55 +02:00
get_dvb_firmware treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
get_maintainer.pl get_maintainer: exclude MAINTAINERS file(s) from --git-fallback 2020-10-16 11:11:19 -07:00
gfp-translate treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 166 2019-05-30 11:26:39 -07:00
headerdep.pl
headers_check.pl
headers_install.sh Merge branch 'work.fdpic' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-08-07 13:29:39 -07:00
insert-sys-cert.c
jobserver-exec docs, parallelism: Rearrange how jobserver reservations are made 2019-11-22 10:35:18 -07:00
kallsyms.c kallsyms: fix nonconverging kallsyms table with lld 2021-02-17 11:02:24 +01:00
Kbuild.include kbuild: remove the target in signal traps when interrupted 2022-10-26 13:25:43 +02:00
Kconfig.include kconfig: unify cc-option and as-option 2020-06-17 10:38:42 +09:00
kernel-doc stddef: Introduce struct_group() helper macro 2022-11-25 17:45:54 +01:00
ld-version.sh
leaking_addresses.pl leaking_addresses: Always print a trailing newline 2021-11-18 14:03:57 +01:00
Lindent
link-vmlinux.sh kbuild: Unify options for BTF generation for vmlinux and modules 2022-10-28 12:57:12 +02:00
lld-version.sh scripts/lld-version.sh: Rewrite based on upstream ld-version.sh 2021-11-21 13:46:37 +01:00
Makefile certs: Add ability to preload revocation certs 2021-06-30 08:47:30 -04:00
Makefile.asm-generic
Makefile.build x86/retbleed: Add fine grained Kconfig knobs 2022-07-25 11:26:50 +02:00
Makefile.clean kbuild: introduce hostprogs-always-y and userprogs-always-y 2020-08-10 01:32:59 +09:00
Makefile.dtbinst kbuild: refactor Makefile.dtbinst more 2020-03-25 10:19:43 +09:00
Makefile.extrawarn Makefile.extrawarn: Move -Wcast-function-type-strict to W=1 2022-10-15 07:55:50 +02:00
Makefile.gcc-plugins gcc-plugins: Undefine LATENT_ENTROPY_PLUGIN when plugin disabled for a file 2022-08-25 11:38:10 +02:00
Makefile.headersinst kbuild: move headers_check rule to usr/include/Makefile 2019-11-15 00:23:10 +09:00
Makefile.host kbuild: sort hostprogs before passing it to ifneq 2020-08-10 01:32:59 +09:00
Makefile.kasan kasan: fix hwasan build for gcc 2021-04-28 13:40:02 +02:00
Makefile.kcov kbuild: include scripts/Makefile.* only when relevant CONFIG is enabled 2020-08-10 01:32:59 +09:00
Makefile.kcsan Kbuild updates for v5.10 2020-10-22 13:13:57 -07:00
Makefile.lib dt-bindings: Use json for processed-schema* 2020-08-19 14:31:57 -06:00
Makefile.modfinal kbuild: preprocess module linker script 2020-09-25 00:36:41 +09:00
Makefile.modinst kbuild: modinst: read modules.order instead of $(MODVERDIR)/*.mod 2019-07-17 22:39:27 +09:00
Makefile.modpost kbuild: Fix include path in scripts/Makefile.modpost 2022-09-05 10:28:55 +02:00
Makefile.modsign kbuild: modsign: read modules.order instead of $(MODVERDIR)/*.mod 2019-07-17 22:39:27 +09:00
Makefile.package kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables 2020-06-11 20:14:41 +09:00
Makefile.ubsan ubsan: remove CONFIG_UBSAN_OBJECT_SIZE 2022-04-13 21:01:10 +02:00
Makefile.userprogs kbuild: add infrastructure to build userspace programs 2020-05-17 18:52:01 +09:00
makelst
markup_oops.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 373 2019-06-05 17:37:10 +02:00
mkcompile_h kbuild: mkcompile_h: consider timestamp if KBUILD_BUILD_TIMESTAMP is set 2021-07-25 14:36:16 +02:00
mkmakefile kbuild: get rid of $(realpath ...) from scripts/mkmakefile 2019-08-29 23:54:29 +09:00
mksysmap mksysmap: Fix the mismatch of 'L0' symbols in System.map 2022-09-23 14:17:00 +02:00
mkuboot.sh
module.lds.S modules: Ensure natural alignment for .altinstructions and __bug_table sections 2022-08-25 11:38:19 +02:00
modules-check.sh kbuild: make module name conflict fatal error 2020-05-26 00:03:16 +09:00
nsdeps scripts: add dummy report mode to add_namespace.cocci 2020-07-10 14:19:58 +02:00
objdiff treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 199 2019-05-30 11:29:23 -07:00
pahole-flags.sh kbuild: Add skip_encoding_btf_enum64 option to pahole 2022-10-28 12:57:12 +02:00
parse-maintainers.pl parse-maintainers: Do not sort section content by default 2020-03-26 15:08:27 -07:00
patch-kernel
profile2linkerlist.pl
prune-kernel
recordmcount.c ftrace: Have recordmcount use w8 to read relp->r_info in arm64_is_fake_mcount 2021-03-09 11:11:14 +01:00
recordmcount.h recordmcount: Correct st_shndx handling 2021-06-30 08:47:23 -04:00
recordmcount.pl recordmcount.pl: fix typo in s390 mcount regex 2022-01-05 12:40:29 +01:00
setlocalversion scripts/setlocalversion: make git describe output more reliable 2020-09-25 02:28:12 +09:00
show_delta tweewide: Fix most Shebang lines 2021-05-22 11:40:55 +02:00
sign-file.c cert host tools: Stop complaining about deprecated OpenSSL functions 2022-11-16 09:57:17 +01:00
sorttable.c s390/kernel: expand exception table logic to allow new handling options 2020-07-20 10:55:50 +02:00
sorttable.h scripts/sorttable: Implement build-time ORC unwind table sorting 2019-12-13 10:47:58 +01:00
spdxcheck-test.sh
spdxcheck.py scripts/spdxcheck.py: handle license identifiers in XML comments 2020-10-02 11:31:26 +02:00
spelling.txt Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2020-10-15 15:11:56 -07:00
sphinx-pre-install scripts: sphinx-pre-install: Fix ctex support on Debian 2022-01-27 10:54:36 +01:00
split-man.pl tweewide: Fix most Shebang lines 2021-05-22 11:40:55 +02:00
stackdelta
stackusage
subarch.include
tags.sh Merge branch 'locking/urgent' into locking/core, to pick up fixes 2020-10-09 08:55:17 +02:00
tools-support-relr.sh Makefile: fix GDB warning with CONFIG_RELR 2021-07-14 16:55:53 +02:00
unifdef.c
ver_linux ver_linux: Query ld cache for versions of libc/libcpp run-time 2020-02-10 13:35:15 -08:00
xen-hypercalls.sh
xz_wrap.sh kbuild: add variables for compression tools 2020-06-06 23:42:01 +09:00