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| author |   Peter Zijlstra <peterz@infradead.org> | 2020-08-12 12:22:17 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-08-26 12:41:53 +0200 |
| commit | bf9282dc26e7fe2a0736edc568762f0f05d12416 (patch) | |
| tree | d98586713c1c549a72d0e7d2401fc27f962b3426 /drivers/cpuidle | |
| parent | sched,idle,rcu: Push rcu_idle deeper into the idle path (diff) | |
| download | linux-dev-bf9282dc26e7fe2a0736edc568762f0f05d12416.tar.xz linux-dev-bf9282dc26e7fe2a0736edc568762f0f05d12416.zip | |
cpuidle: Make CPUIDLE_FLAG_TLB_FLUSHED generic
This allows moving the leave_mm() call into generic code before
rcu_idle_enter(). Gets rid of more trace_*_rcuidle() users.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Marco Elver <elver@google.com>
Link: https://lkml.kernel.org/r/20200821085348.369441600@infradead.org
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/cpuidle.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index 9bcda4153d3b..04becd70cc41 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -22,6 +22,7 @@ #include <linux/module.h> #include <linux/suspend.h> #include <linux/tick.h> +#include <linux/mmu_context.h> #include <trace/events/power.h> #include "cpuidle.h" @@ -228,6 +229,9 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv, broadcast = false; } + if (target_state->flags & CPUIDLE_FLAG_TLB_FLUSHED) + leave_mm(dev->cpu); + /* Take note of the planned idle state. */ sched_idle_set_state(target_state); |