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Commit 769bc1fd authored by Vineet Gupta's avatar Vineet Gupta
Browse files

ARC: OProfile support 



Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
Cc: Robert Richter <rric@kernel.org>
Cc: oprofile-list@lists.sf.net
Reviewed-by: default avatarJames Hogan <james.hogan@imgtec.com>
parent 01b812bc

arch/arc/Kconfig

+1 −0
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@@ -25,6 +25,7 @@ config ARC 
	select HAVE_ARCH_TRACEHOOK

	select HAVE_GENERIC_HARDIRQS

	select HAVE_MEMBLOCK

	select HAVE_OPROFILE

	select IRQ_DOMAIN

	select MODULES_USE_ELF_RELA

	select NO_BOOTMEM

arch/arc/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -100,6 +100,8 @@ ifneq ($(platform-y),) 
core-y		+= arch/arc/plat-$(PLATFORM)/

endif



drivers-$(CONFIG_OPROFILE)	+= arch/arc/oprofile/



libs-y		+= arch/arc/lib/ $(LIBGCC)



#default target for make without any arguements.

arch/arc/oprofile/Makefile

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+9 −0
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obj-$(CONFIG_OPROFILE) += oprofile.o



DRIVER_OBJS = $(addprefix ../../../drivers/oprofile/, \

		oprof.o cpu_buffer.o buffer_sync.o \

		event_buffer.o oprofile_files.o \

		oprofilefs.o oprofile_stats.o \

		timer_int.o )



oprofile-y	:= $(DRIVER_OBJS) common.o

arch/arc/oprofile/common.c

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+26 −0
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/*

 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 * Based on orig code from @author John Levon <levon@movementarian.org>

 */



#include <linux/oprofile.h>

#include <linux/perf_event.h>



int __init oprofile_arch_init(struct oprofile_operations *ops)

{

	/*

	 * A failure here, forces oprofile core to switch to Timer based PC

	 * sampling, which will happen if say perf is not enabled/available

	 */

	return oprofile_perf_init(ops);

}



void oprofile_arch_exit(void)

{

	oprofile_perf_exit();

}