Viresh Kumar 7c001e5aab cpufreq: schedutil: Don't skip freq update when limits change ... commit 600f5badb7 upstream. To avoid reducing the frequency of a CPU prematurely, we skip reducing the frequency if the CPU had been busy recently. This should not be done when the limits of the policy are changed, for example due to thermal throttling. We should always get the frequency within the new limits as soon as possible. Trying to fix this by using only one flag, i.e. need_freq_update, can lead to a race condition where the flag gets cleared without forcing us to change the frequency at least once. And so this patch introduces another flag to avoid that race condition. Fixes: ecd2884291 ("cpufreq: schedutil: Don't set next_freq to UINT_MAX") Cc: v4.18+ <stable@vger.kernel.org> # v4.18+ Reported-by: Doug Smythies <dsmythies@telus.net> Tested-by: Doug Smythies <dsmythies@telus.net> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-08-25 10:47:46 +02:00
..
bpf	bpf: silence warning messages in core	2019-07-26 09:14:06 +02:00
cgroup	cgroup: Fix css_task_iter_advance_css_set() cset skip condition	2019-08-09 17:52:35 +02:00
configs	kconfig: tinyconfig: remove stale stack protector fixups	2018-06-15 07:15:28 +09:00
debug	kdb: Don't back trace on a cpu that didn't round up	2019-02-12 19:47:19 +01:00
dma	dma-direct: do not include SME mask in the DMA supported check	2019-01-13 09:51:05 +01:00
events	perf/core: Fix creating kernel counters for PMUs that override event->cpu	2019-08-16 10:12:50 +02:00
gcov
irq	genirq: Add optional hardware synchronization for shutdown	2019-07-21 09:03:13 +02:00
livepatch	module: Fix livepatch/ftrace module text permissions race	2019-07-10 09:53:40 +02:00
locking	locking/lockdep: Hide unused 'class' variable	2019-07-31 07:27:09 +02:00
power	x86/power: Fix 'nosmt' vs hibernation triple fault during resume	2019-06-11 12:20:52 +02:00
printk	printk: Fix panic caused by passing log_buf_len to command line	2018-11-13 11:08:48 -08:00
rcu	rcuperf: Fix cleanup path for invalid perf_type strings	2019-05-31 06:46:30 -07:00
sched	cpufreq: schedutil: Don't skip freq update when limits change	2019-08-25 10:47:46 +02:00
time	timer_list: Guard procfs specific code	2019-07-26 09:14:10 +02:00
trace	ftrace: Enable trampoline when rec count returns back to one	2019-08-06 19:06:46 +02:00
.gitignore
acct.c	acct_on(): don't mess with freeze protection	2019-05-31 06:46:05 -07:00
async.c
audit.c	audit: use ktime_get_coarse_real_ts64() for timestamps	2018-07-17 14:45:08 -04:00
audit.h
audit_fsnotify.c
audit_tree.c	\n	2018-08-17 09:41:28 -07:00
audit_watch.c	audit: fix use-after-free in audit_add_watch	2018-07-18 11:43:36 -04:00
auditfilter.c	audit: fix a memory leak bug	2019-05-31 06:46:17 -07:00
auditsc.c	audit/stable-4.18 PR 20180814	2018-08-15 10:46:54 -07:00
backtracetest.c
bounds.c	kbuild: fix kernel/bounds.c 'W=1' warning	2018-11-13 11:08:47 -08:00
capability.c
compat.c	time: Enable get/put_compat_itimerspec64 always	2018-06-24 14:39:47 +02:00
configs.c
context_tracking.c
cpu.c	cpu/hotplug: Fix out-of-bounds read when setting fail state	2019-07-21 09:03:11 +02:00
cpu_pm.c
crash_core.c	kernel/crash_core.c: print timestamp using time64_t	2018-08-22 10:52:47 -07:00
crash_dump.c
cred.c	access: avoid the RCU grace period for the temporary subjective credentials	2019-07-31 07:27:11 +02:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	cgroup: Call cgroup_release() before __exit_signal()	2019-08-09 17:52:34 +02:00
extable.c
fail_function.c	bpf/error-inject/kprobes: Clear current_kprobe and enable preempt in kprobe	2018-06-21 12:33:19 +02:00
fork.c	sched/fair: Don't free p->numa_faults with concurrent readers	2019-08-04 09:30:56 +02:00
freezer.c	PM / reboot: Eliminate race between reboot and suspend	2018-08-06 12:35:20 +02:00
futex.c	locking/futex: Allow low-level atomic operations to return -EAGAIN	2019-05-10 17:54:11 +02:00
futex_compat.c
groups.c
hung_task.c	kernel: hung_task.c: disable on suspend	2019-04-20 09:16:02 +02:00
iomem.c
irq_work.c	irq_work: Do not raise an IPI when queueing work on the local CPU	2019-05-31 06:46:19 -07:00
jump_label.c	jump_label: move 'asm goto' support test to Kconfig	2019-06-04 08:02:34 +02:00
kallsyms.c	kallsyms, x86: Export addresses of PTI entry trampolines	2018-08-14 19:12:29 -03:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt	kconfig: include kernel/Kconfig.preempt from init/Kconfig	2018-08-02 08:06:54 +09:00
kcov.c	kernel/kcov.c: mark write_comp_data() as notrace	2019-02-12 19:47:20 +01:00
kexec.c	kexec: add call to LSM hook in original kexec_load syscall	2018-07-16 12:31:57 -07:00
kexec_core.c	kexec: yield to scheduler when loading kimage segments	2018-06-15 07:55:24 +09:00
kexec_file.c	treewide: Use array_size() in vzalloc()	2018-06-12 16:19:22 -07:00
kexec_internal.h
kmod.c
kprobes.c	kprobes: Fix error check when reusing optimized probes	2019-04-27 09:36:37 +02:00
ksysfs.c
kthread.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-08-13 11:25:07 -07:00
latencytop.c
Makefile	x86/uaccess, kcov: Disable stack protector	2019-06-19 08:18:01 +02:00
memremap.c	mm, devm_memremap_pages: add MEMORY_DEVICE_PRIVATE support	2019-01-13 09:51:04 +01:00
module-internal.h	modsign: log module name in the event of an error	2018-07-02 11:36:17 +02:00
module.c	kernel/module.c: Only return -EEXIST for modules that have finished loading	2019-08-06 19:06:47 +02:00
module_signing.c	modsign: log module name in the event of an error	2018-07-02 11:36:17 +02:00
notifier.c
nsproxy.c
padata.c	padata: use smp_mb in padata_reorder to avoid orphaned padata jobs	2019-07-26 09:14:25 +02:00
panic.c	panic: avoid deadlocks in re-entrant console drivers	2018-12-29 13:37:57 +01:00
params.c
pid.c	Fix failure path in alloc_pid()	2019-01-13 09:51:06 +01:00
pid_namespace.c	signal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig	2019-07-26 09:14:01 +02:00
profile.c
ptrace.c	ptrace: Fix ->ptracer_cred handling for PTRACE_TRACEME	2019-07-10 09:53:41 +02:00
range.c
reboot.c	PM / reboot: Eliminate race between reboot and suspend	2018-08-06 12:35:20 +02:00
relay.c	relay: check return of create_buf_file() properly	2019-03-13 14:02:35 -07:00
resource.c	libnvdimm for 4.18	2018-06-08 17:21:52 -07:00
rseq.c	rseq: uapi: Declare rseq_cs field as union, update includes	2018-07-10 22:18:52 +02:00
seccomp.c
signal.c	kernel/signal.c: trace_signal_deliver when signal_group_exit	2019-06-09 09:17:20 +02:00
smp.c	cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM	2019-02-12 19:47:25 +01:00
smpboot.c	smpboot: Remove cpumask from the API	2018-07-03 09:20:44 +02:00
smpboot.h
softirq.c	nohz: Fix missing tick reprogram when interrupting an inline softirq	2018-08-03 15:52:10 +02:00
stacktrace.c
stop_machine.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-08-13 11:25:07 -07:00
sys.c	kernel/sys.c: prctl: fix false positive in validate_prctl_map()	2019-06-15 11:54:01 +02:00
sys_ni.c	Merge branch 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-06-10 10:17:09 -07:00
sysctl.c	sysctl: return -EINVAL if val violates minmax	2019-06-15 11:53:59 +02:00
sysctl_binary.c
task_work.c
taskstats.c
test_kprobes.c	kprobes: Remove jprobe API implementation	2018-06-21 12:33:05 +02:00
torture.c	torture: Keep old-school dmesg format	2018-06-25 11:30:10 -07:00
tracepoint.c	tracepoint: Fix tracepoint array element size mismatch	2018-10-17 15:35:29 -04:00
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c
up.c
user-return-notifier.c
user.c	userns: use irqsave variant of refcount_dec_and_lock()	2018-08-22 10:52:47 -07:00
user_namespace.c	userns: also map extents in the reverse map to kernel IDs	2018-11-13 11:09:00 -08:00
utsname.c
utsname_sysctl.c	sys: don't hold uts_sem while accessing userspace memory	2018-08-11 02:05:53 -05:00
watchdog.c	watchdog: Respect watchdog cpumask on CPU hotplug	2019-04-03 06:26:29 +02:00
watchdog_hld.c	watchdog: Mark watchdog touch functions as notrace	2018-08-30 12:56:40 +02:00
workqueue.c	workqueue: Try to catch flush_work() without INIT_WORK().	2019-05-02 09:58:56 +02:00
workqueue_internal.h