Commit-ID: 94a571402012e0dfaa23bbbdd64d033f48477d86
Gitweb: http://git.kernel.org/tip/94a571402012e0dfaa23bbbdd64d033f48477d86
Author: Frederic Weisbecker <fweisbec@xxxxxxxxx>
AuthorDate: Mon, 15 Oct 2012 16:17:16 +0200
Committer: Frederic Weisbecker <fweisbec@xxxxxxxxx>
CommitDate: Mon, 15 Oct 2012 18:51:08 +0200
tick: Conditionally build nohz specific code in tick handler
This optimize a bit the high res tick sched handler.
Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
---
kernel/time/tick-sched.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index 68a873a..766d4c4 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -122,6 +122,7 @@ static void tick_sched_do_timer(ktime_t now)
static void tick_sched_handle(struct tick_sched *ts, struct pt_regs *regs)
{
+#ifdef CONFIG_NO_HZ
/*
* When we are idle and the tick is stopped, we have to touch
* the watchdog as we might not schedule for a really long
@@ -135,6 +136,7 @@ static void tick_sched_handle(struct tick_sched *ts, struct pt_regs *regs)
if (is_idle_task(current))
ts->idle_jiffies++;
}
+#endif
update_process_times(user_mode(regs));
profile_tick(CPU_PROFILING);
}
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|