From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Fri, 14 Oct 2022 20:03:00 +0000 (-0700)
Subject: Merge tag 'sched-psi-2022-10-14' of git://git.kernel.org/pub/scm/linux/kernel/git... 
X-Git-Tag: v6.1-rc5~168
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bd9a3dba185ce6701b41f0341470d3f53bbbbaed;p=platform%2Fkernel%2Flinux-starfive.git

Merge tag 'sched-psi-2022-10-14' of git://git./linux/kernel/git/tip/tip

Pull PSI updates from Ingo Molnar:

 - Various performance optimizations, resulting in a 4%-9% speedup in
   the mmtests/config-scheduler-perfpipe micro-benchmark.

 - New interface to turn PSI on/off on a per cgroup level.

* tag 'sched-psi-2022-10-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/psi: Per-cgroup PSI accounting disable/re-enable interface
  sched/psi: Cache parent psi_group to speed up group iteration
  sched/psi: Consolidate cgroup_psi()
  sched/psi: Add PSI_IRQ to track IRQ/SOFTIRQ pressure
  sched/psi: Remove NR_ONCPU task accounting
  sched/psi: Optimize task switch inside shared cgroups again
  sched/psi: Move private helpers to sched/stats.h
  sched/psi: Save percpu memory when !psi_cgroups_enabled
  sched/psi: Don't create cgroup PSI files when psi_disabled
  sched/psi: Fix periodic aggregation shut off
---

bd9a3dba185ce6701b41f0341470d3f53bbbbaed
diff --cc kernel/cgroup/cgroup.c
index 764bdd5,fa1cf83..7f48667
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@@ -5175,6 -5222,8 +5243,7 @@@ static struct cftype cgroup_psi_files[
  #ifdef CONFIG_PSI
  	{
  		.name = "io.pressure",
 -		.flags = CFTYPE_PRESSURE,
+ 		.file_offset = offsetof(struct cgroup, psi_files[PSI_IO]),
  		.seq_show = cgroup_io_pressure_show,
  		.write = cgroup_io_pressure_write,
  		.poll = cgroup_pressure_poll,
@@@ -5182,6 -5231,8 +5251,7 @@@
  	},
  	{
  		.name = "memory.pressure",
 -		.flags = CFTYPE_PRESSURE,
+ 		.file_offset = offsetof(struct cgroup, psi_files[PSI_MEM]),
  		.seq_show = cgroup_memory_pressure_show,
  		.write = cgroup_memory_pressure_write,
  		.poll = cgroup_pressure_poll,
@@@ -5189,11 -5240,30 +5259,27 @@@
  	},
  	{
  		.name = "cpu.pressure",
 -		.flags = CFTYPE_PRESSURE,
+ 		.file_offset = offsetof(struct cgroup, psi_files[PSI_CPU]),
  		.seq_show = cgroup_cpu_pressure_show,
  		.write = cgroup_cpu_pressure_write,
  		.poll = cgroup_pressure_poll,
  		.release = cgroup_pressure_release,
  	},
+ #ifdef CONFIG_IRQ_TIME_ACCOUNTING
+ 	{
+ 		.name = "irq.pressure",
 -		.flags = CFTYPE_PRESSURE,
+ 		.file_offset = offsetof(struct cgroup, psi_files[PSI_IRQ]),
+ 		.seq_show = cgroup_irq_pressure_show,
+ 		.write = cgroup_irq_pressure_write,
+ 		.poll = cgroup_pressure_poll,
+ 		.release = cgroup_pressure_release,
+ 	},
+ #endif
+ 	{
+ 		.name = "cgroup.pressure",
 -		.flags = CFTYPE_PRESSURE,
+ 		.seq_show = cgroup_pressure_show,
+ 		.write = cgroup_pressure_write,
+ 	},
  #endif /* CONFIG_PSI */
  	{ }	/* terminate */
  };