linux-kernel - [PATCH 6/9] metag: perf: use hard_processor

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Date:	Fri, 15 Mar 2013 13:43:45 +0000
From:	James Hogan <james.hogan@...tec.com>
To:	<linux-kernel@...r.kernel.org>
CC:	James Hogan <james.hogan@...tec.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Subject: [PATCH 6/9] metag: perf: use hard_processor_id() to get thread

Use hard_processor_id() to get the current thread number rather than
get_cpu() and the hardware thread mapping. There was no matching
put_cpu(), and in any case this should be slightly more efficient.

Signed-off-by: James Hogan <james.hogan@...tec.com>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...stprotocols.net>
---
 arch/metag/kernel/perf/perf_event.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/metag/kernel/perf/perf_event.c b/arch/metag/kernel/perf/perf_event.c
index 6210126..54fde35 100644
--- a/arch/metag/kernel/perf/perf_event.c
+++ b/arch/metag/kernel/perf/perf_event.c
@@ -22,9 +22,9 @@
 #include <linux/slab.h>
 
 #include <asm/core_reg.h>
-#include <asm/hwthread.h>
 #include <asm/io.h>
 #include <asm/irq.h>
+#include <asm/processor.h>
 
 #include "perf_event.h"
 
@@ -651,7 +651,7 @@ static void metag_pmu_enable_counter(struct hw_perf_event *event, int idx)
 	}
 
 	tmp = ((config & 0xf) << 28) |
-			((1 << 24) << cpu_2_hwthread_id[get_cpu()]);
+			((1 << 24) << hard_processor_id());
 	if (metag_pmu->max_period)
 		/*
 		 * Cores supporting overflow interrupts may have had the counter
-- 
1.8.1.2


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