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Commit 9344de1b authored by James Hogan's avatar James Hogan
Browse files

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: default avatarJames Hogan <james.hogan@imgtec.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
parent 2033dc54

arch/metag/kernel/perf/perf_event.c

+2 −2
Original line number Diff line number Diff line
@@ -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