Hello,
tick_nohz_stop_sched_tick() and tick_nohz_restart_sched_tick()
pair in cpu_idle() is different from 32-bit version.
From: Hiroshi Shimamoto <[EMAIL PROTECTED]>
Subject: [PATCH] x86_64: move out tick_nohz_stop_sched_tick() call from the loop
Move out tick_nohz_stop_sched_tick() call from the loop in cpu_idle
same as 32-bit version.
Signed-off-by: Hiroshi Shimamoto <[EMAIL PROTECTED]>
---
arch/x86/kernel/process_64.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 93ce4f3..6870208 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -170,14 +170,13 @@ void cpu_idle(void)
current_thread_info()->status |= TS_POLLING;
/* endless idle loop with no priority at all */
while (1) {
+ tick_nohz_stop_sched_tick();
while (!need_resched()) {
void (*idle)(void);
if (__get_cpu_var(cpu_idle_state))
__get_cpu_var(cpu_idle_state) = 0;
- tick_nohz_stop_sched_tick();
-
rmb();
idle = pm_idle;
if (!idle)
--
1.5.3.6
--
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