summaryrefslogtreecommitdiff
path: root/drivers/cpuidle
diff options
context:
space:
mode:
authorPeter Zijlstra <peterz@infradead.org>2020-08-12 12:22:17 +0200
committerPeter Zijlstra <peterz@infradead.org>2020-08-26 12:41:53 +0200
commitbf9282dc26e7fe2a0736edc568762f0f05d12416 (patch)
treed98586713c1c549a72d0e7d2401fc27f962b3426 /drivers/cpuidle
parent1098582a0f6c4e8fd28da0a6305f9233d02c9c1d (diff)
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.c4
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);