Messages in this thread Patch in this message | | | Date | Sat, 23 Jun 2007 13:32:52 -0000 | From | Thomas Gleixner <> | Subject | [patch -mm 27/28] x86_64: prep idle loop for dynticks |
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From: Chris Wright <chrisw@sous-sol.org>
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 in next patch.
Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@suse.de>
--- arch/x86_64/kernel/process.c | 4 ++++ 1 file changed, 4 insertions(+)
Index: linux-2.6.22-rc4-mm/arch/x86_64/kernel/process.c =================================================================== --- linux-2.6.22-rc4-mm.orig/arch/x86_64/kernel/process.c 2007-06-23 14:38:54.000000000 +0200 +++ linux-2.6.22-rc4-mm/arch/x86_64/kernel/process.c 2007-06-23 14:39:00.000000000 +0200 @@ -37,6 +37,7 @@ #include <linux/notifier.h> #include <linux/kprobes.h> #include <linux/kdebug.h> +#include <linux/tick.h> #include <asm/uaccess.h> #include <asm/pgtable.h> @@ -207,6 +208,8 @@ void cpu_idle (void) if (__get_cpu_var(cpu_idle_state)) __get_cpu_var(cpu_idle_state) = 0; + tick_nohz_stop_sched_tick(); + check_pgt_cache(); rmb(); idle = pm_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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