From: Kevin Hilman <khilman@mvista.com>
To: tglx@linutronix.de, mingo@elte.hu
Cc: linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH -rt 4/6] Add trace_preempt_*_idle() support for ARM.
Date: Fri, 13 Jul 2007 10:52:18 -0700 [thread overview]
Message-ID: <20070713175228.623525155@mvista.com> (raw)
In-Reply-To: 20070713175214.336577416@mvista.com
[-- Attachment #1: arm-trace-preempt-idle.patch --]
[-- Type: text/plain, Size: 872 bytes --]
Add trace functions to ARM idle loop and also move the
tick_nohz_restart_sched_tick() after the local_irq_disable() as is
done on x86.
Signed-off-by: Kevin Hilman <khilman@mvista.com>
---
arch/arm/kernel/process.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
Index: linux-2.6/arch/arm/kernel/process.c
===================================================================
--- linux-2.6.orig/arch/arm/kernel/process.c
+++ linux-2.6/arch/arm/kernel/process.c
@@ -165,11 +165,13 @@ void cpu_idle(void)
while (!need_resched() && !need_resched_delayed())
idle();
leds_event(led_idle_end);
- tick_nohz_restart_sched_tick();
local_irq_disable();
+ trace_preempt_exit_idle();
+ tick_nohz_restart_sched_tick();
__preempt_enable_no_resched();
__schedule();
preempt_disable();
+ trace_preempt_enter_idle();
local_irq_enable();
}
}
--
next prev parent reply other threads:[~2007-07-13 18:14 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-13 17:52 [PATCH -rt 0/6] misc. ARM fixup and compile fixes Kevin Hilman
2007-07-13 17:52 ` [PATCH -rt 1/6] Re-add GENERIC_TIME to OMAP Kevin Hilman
2007-07-13 17:52 ` [PATCH -rt 2/6] Fix typo in new IRQF_TIMER name Kevin Hilman
2007-07-13 17:52 ` [PATCH -rt 3/6] Compile fix for PREEMPT_TIMING on and TRACE_IRQFLAGS off Kevin Hilman
2007-07-13 17:52 ` Kevin Hilman [this message]
2007-07-13 17:52 ` [PATCH -rt 5/6] ARM: Fix save_stack_trace() prototype Kevin Hilman
2007-07-13 17:52 ` [PATCH -rt 6/6] Compile fix for PREEMPT_TIMING on and IRQSOFF_TIMING off Kevin Hilman
2007-07-13 21:11 ` Sven-Thorsten Dietrich
2007-07-13 23:22 ` Kevin Hilman
2007-07-14 2:08 ` Sven-Thorsten Dietrich
2007-07-15 16:31 ` [PATCH -rt 0/6] misc. ARM fixup and compile fixes Thomas Gleixner
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