Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=02290683343391a50f45599710295dafa2ddd018
Commit: 02290683343391a50f45599710295dafa2ddd018
Parent: c4d58cbd158dc9b30c55c0e3881ae7c6b8843d5a
Author: Chris Wright <[EMAIL PROTECTED]>
AuthorDate: Fri Oct 12 23:04:07 2007 +0200
Committer: Thomas Gleixner <[EMAIL PROTECTED]>
CommitDate: Fri Oct 12 23:04:07 2007 +0200
x86_64: prepare idle loop for dynamic ticks
Add tick_nohz_{stop,restart}_sched_tick to idle loop in prepartion for
turning
on dynticks. These are just noops until NO_HZ is enabled.
Signed-off-by: Chris Wright <[EMAIL PROTECTED]>
Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
Signed-off-by: Thomas Gleixner <[EMAIL PROTECTED]>
Signed-off-by: Arjan van de Ven <[EMAIL PROTECTED]>
---
arch/x86/kernel/process_64.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 9895655..6f9dbbe 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -38,6 +38,7 @@
#include <linux/notifier.h>
#include <linux/kprobes.h>
#include <linux/kdebug.h>
+#include <linux/tick.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
@@ -208,6 +209,8 @@ void cpu_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)
@@ -228,6 +231,7 @@ void cpu_idle (void)
__exit_idle();
}
+ tick_nohz_restart_sched_tick();
preempt_enable_no_resched();
schedule();
preempt_disable();
-
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