linux-kernel - [tip:timers/core] perf: core: Use hrtimer

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Message-ID: <tip-3497d206c4d9b266d2e56c8b20e51b2f0e6a3c72@git.kernel.org>
Date:	Wed, 22 Apr 2015 12:11:03 -0700
From:	tip-bot for Thomas Gleixner <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	fweisbec@...il.com, preeti@...ux.vnet.ibm.com,
	peterz@...radead.org, tglx@...utronix.de, viresh.kumar@...aro.org,
	mingo@...nel.org, hpa@...or.com, linux-kernel@...r.kernel.org,
	mtosatti@...hat.com
Subject: [tip:timers/core] perf: core: Use hrtimer_start()

Commit-ID:  3497d206c4d9b266d2e56c8b20e51b2f0e6a3c72
Gitweb:     http://git.kernel.org/tip/3497d206c4d9b266d2e56c8b20e51b2f0e6a3c72
Author:     Thomas Gleixner <tglx@...utronix.de>
AuthorDate: Tue, 14 Apr 2015 21:09:03 +0000
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Wed, 22 Apr 2015 17:06:51 +0200

perf: core: Use hrtimer_start()

hrtimer_start() does not longer defer already expired timers to the
softirq. Get rid of the __hrtimer_start_range_ns() invocation.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Acked-by: Peter Zijlstra <peterz@...radead.org>
Cc: Preeti U Murthy <preeti@...ux.vnet.ibm.com>
Cc: Viresh Kumar <viresh.kumar@...aro.org>
Cc: Marcelo Tosatti <mtosatti@...hat.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Link: http://lkml.kernel.org/r/20150414203502.452104213@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 kernel/events/core.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 81aa3a4..05309fd 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -834,9 +834,7 @@ static void perf_cpu_hrtimer_restart(struct perf_cpu_context *cpuctx)
 	if (hrtimer_active(hr))
 		return;
 
-	if (!hrtimer_callback_running(hr))
-		__hrtimer_start_range_ns(hr, cpuctx->hrtimer_interval,
-					 0, HRTIMER_MODE_REL_PINNED, 0);
+	hrtimer_start(hr, cpuctx->hrtimer_interval, HRTIMER_MODE_REL_PINNED);
 }
 
 void perf_pmu_disable(struct pmu *pmu)
@@ -6843,9 +6841,8 @@ static void perf_swevent_start_hrtimer(struct perf_event *event)
 	} else {
 		period = max_t(u64, 10000, hwc->sample_period);
 	}
-	__hrtimer_start_range_ns(&hwc->hrtimer,
-				ns_to_ktime(period), 0,
-				HRTIMER_MODE_REL_PINNED, 0);
+	hrtimer_start(&hwc->hrtimer, ns_to_ktime(period),
+		      HRTIMER_MODE_REL_PINNED);
 }
 
 static void perf_swevent_cancel_hrtimer(struct perf_event *event)
--
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