Johannes Weiner 4e38135180 psi: Fix a division error in psi poll() ... [ Upstream commit c3466952ca ] The psi window size is a u64 an can be up to 10 seconds right now, which exceeds the lower 32 bits of the variable. We currently use div_u64 for it, which is meant only for 32-bit divisors. The result is garbage pressure sampling values and even potential div0 crashes. Use div64_u64. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Suren Baghdasaryan <surenb@google.com> Cc: Jingfeng Xie <xiejingfeng@linux.alibaba.com> Link: https://lkml.kernel.org/r/20191203183524.41378-3-hannes@cmpxchg.org Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-01-12 12:21:36 +01:00
..
bpf	bpf: Fix passing modified ctx to ld/abs/ind instruction	2020-01-12 12:21:10 +01:00
cgroup	cgroup: freezer: don't change task and cgroups status unnecessarily	2019-12-31 16:45:06 +01:00
configs
debug	kgdb: don't use a notifier to enter kgdb at panic; call directly	2019-09-25 17:51:40 -07:00
dma	dma-mapping: fix handling of dma-ranges for reserved memory (again)	2020-01-04 19:17:00 +01:00
events	perf/core: Fix the mlock accounting, again	2019-12-31 16:45:38 +01:00
gcov	um: Enable CONFIG_CONSTRUCTORS	2019-09-15 21:37:13 +02:00
irq	irq/irqdomain: Update __irq_domain_alloc_fwnode() function documentation	2019-11-05 00:48:26 +01:00
livepatch	livepatch: Nullify obj->mod in klp_module_coming()'s error path	2019-08-19 13:03:37 +02:00
locking	locking/spinlock/debug: Fix various data races	2020-01-12 12:21:13 +01:00
power	PM / hibernate: memory_bm_find_bit(): Tighten node optimisation	2020-01-09 10:19:51 +01:00
printk	Merge branch 'for-5.4' into for-linus	2019-09-16 12:54:25 +02:00
rcu	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-16 17:25:49 -07:00
sched	psi: Fix a division error in psi poll()	2020-01-12 12:21:36 +01:00
time	ptp: fix the race between the release of ptp_clock and cdev	2020-01-04 19:18:48 +01:00
trace	ftrace: Avoid potential division by zero in function profiler	2020-01-09 10:20:01 +01:00
.gitignore
acct.c
async.c
audit_fsnotify.c
audit_tree.c
audit_watch.c	audit_get_nd(): don't unlock parent too early	2019-11-10 11:56:55 -05:00
audit.c	audit/stable-5.3 PR 20190702	2019-07-08 18:55:42 -07:00
audit.h	audit/stable-5.3 PR 20190702	2019-07-08 18:55:42 -07:00
auditfilter.c	audit/stable-5.3 PR 20190702	2019-07-08 18:55:42 -07:00
auditsc.c
backtracetest.c
bounds.c
capability.c
compat.c
configs.c	kernel/configs: Replace GPL boilerplate code with SPDX identifier	2019-07-30 18:34:15 +02:00
context_tracking.c
cpu_pm.c
cpu.c	cpu/speculation: Uninline and export CPU mitigations helpers	2019-11-04 12:22:02 +01:00
crash_core.c
crash_dump.c
cred.c	memcg: account security cred as well to kmemcg	2020-01-09 10:19:57 +01:00
delayacct.c
dma.c
elfcore.c	kernel/elfcore.c: include proper prototypes	2019-09-25 17:51:39 -07:00
exec_domain.c
exit.c	exit: panic before exit_mm() on global init exit	2020-01-09 10:20:01 +01:00
extable.c	extable: Add function to search only kernel exception table	2019-08-21 22:23:48 +10:00
fail_function.c
fork.c	futex: Split futex_mm_release() for exit/exec	2019-11-29 10:10:10 +01:00
freezer.c	Revert "libata, freezer: avoid block device removal while system is frozen"	2019-10-06 09:11:37 -06:00
futex.c	futex: Prevent exit livelock	2019-11-29 10:10:14 +01:00
gen_kheaders.sh	kheaders: substituting --sort in archive creation	2019-10-17 09:08:19 +09:00
groups.c
hung_task.c
iomem.c	mm/nvdimm: add is_ioremap_addr and use that to check ioremap address	2019-07-12 11:05:40 -07:00
irq_work.c
jump_label.c	jump_label: Don't warn on __exit jump entries	2019-08-29 15:10:10 +01:00
kallsyms.c	kallsyms: Don't let kallsyms_lookup_size_offset() fail on retrieving the first symbol	2019-08-27 16:19:56 +01:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt	sched/rt, Kconfig: Unbreak def/oldconfig with CONFIG_PREEMPT=y	2019-07-22 18:05:11 +02:00
kcov.c
kexec_core.c	kexec: bail out upon SIGKILL when allocating memory.	2019-09-25 17:51:40 -07:00
kexec_elf.c	kexec_elf: support 32 bit ELF files	2019-09-06 23:58:44 +02:00
kexec_file.c	Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2019-09-28 08:14:15 -07:00
kexec_internal.h
kexec.c	kexec_load: Disable at runtime if the kernel is locked down	2019-08-19 21:54:15 -07:00
kheaders.c
kmod.c
kprobes.c	Tracing updates:	2019-09-20 11:19:48 -07:00
ksysfs.c
kthread.c	kthread: make __kthread_queue_delayed_work static	2019-10-16 09:20:58 -07:00
latencytop.c
Makefile	Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity	2019-09-27 19:37:27 -07:00
module_signature.c	MODSIGN: Export module signature definitions	2019-08-05 18:39:56 -04:00
module_signing.c	MODSIGN: Export module signature definitions	2019-08-05 18:39:56 -04:00
module-internal.h
module.c	kernel/module.c: wakeup processes in module_wq on module unload	2020-01-09 10:20:02 +01:00
notifier.c
nsproxy.c
padata.c	padata: remove cpu_index from the parallel_queue	2019-09-13 21:15:41 +10:00
panic.c	panic: ensure preemption is disabled during panic()	2019-10-07 15:47:19 -07:00
params.c	lockdown: Lock down module params that specify hardware parameters (eg. ioport)	2019-08-19 21:54:16 -07:00
pid_namespace.c	proc/sysctl: add shared variables for range check	2019-07-18 17:08:07 -07:00
pid.c	kernel/pid.c: convert struct pid count to refcount_t	2019-07-16 19:23:24 -07:00
profile.c
ptrace.c	ptrace: add PTRACE_GET_SYSCALL_INFO request	2019-07-16 19:23:24 -07:00
range.c
reboot.c
relay.c
resource.c	mm/memory_hotplug.c: use PFN_UP / PFN_DOWN in walk_system_ram_range()	2019-09-24 15:54:09 -07:00
rseq.c
seccomp.c	seccomp: Check that seccomp_notif is zeroed out by the user	2020-01-09 10:19:57 +01:00
signal.c	cgroup: freezer: call cgroup_enter_frozen() with preemption disabled in ptrace_stop()	2019-10-11 08:39:57 -07:00
smp.c	smp: Warn on function calls from softirq context	2019-07-20 11:27:16 +02:00
smpboot.c
smpboot.h
softirq.c	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-07-08 11:01:13 -07:00
stackleak.c
stacktrace.c	stacktrace: Don't skip first entry on noncurrent tasks	2019-11-04 21:19:25 +01:00
stop_machine.c	stop_machine: Avoid potential race behaviour	2019-10-17 12:47:12 +02:00
sys_ni.c
sys.c	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-17 12:35:15 -07:00
sysctl_binary.c
sysctl.c	kernel: sysctl: make drop_caches write-only	2020-01-04 19:18:32 +01:00
task_work.c
taskstats.c	taskstats: fix data-race	2020-01-09 10:19:54 +01:00
test_kprobes.c
torture.c	torture: Remove exporting of internal functions	2019-08-01 14:30:22 -07:00
tracepoint.c	The main changes in this release include:	2019-07-18 11:51:00 -07:00
tsacct.c
ucount.c	proc/sysctl: add shared variables for range check	2019-07-18 17:08:07 -07:00
uid16.c
uid16.h
umh.c
up.c	smp: Remove smp_call_function() and on_each_cpu() return values	2019-06-23 14:26:26 +02:00
user_namespace.c	Keyrings namespacing	2019-07-08 19:36:47 -07:00
user-return-notifier.c
user.c	Keyrings namespacing	2019-07-08 19:36:47 -07:00
utsname_sysctl.c
utsname.c
watchdog_hld.c
watchdog.c	watchdog: Mark watchdog_hrtimer to expire in hard interrupt context	2019-08-01 20:51:20 +02:00
workqueue_internal.h
workqueue.c	workqueue: Fix missing kfree(rescuer) in destroy_workqueue()	2019-12-17 19:56:54 +01:00