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ARC: OProfile support

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Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Robert Richter <rric@kernel.org>
Cc: oprofile-list@lists.sf.net
Reviewed-by: James Hogan <james.hogan@imgtec.com>
This commit is contained in:
Vineet Gupta 2013-01-22 17:02:38 +05:30
parent 01b812bcce
commit 769bc1fd7b
4 changed files with 38 additions and 0 deletions
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1
arch/arc/Kconfig
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@ -25,6 +25,7 @@ config ARC
select HAVE_ARCH_TRACEHOOK select HAVE_ARCH_TRACEHOOK
select HAVE_GENERIC_HARDIRQS select HAVE_GENERIC_HARDIRQS
select HAVE_MEMBLOCK select HAVE_MEMBLOCK
select HAVE_OPROFILE
select IRQ_DOMAIN select IRQ_DOMAIN
select MODULES_USE_ELF_RELA select MODULES_USE_ELF_RELA
select NO_BOOTMEM select NO_BOOTMEM

2
arch/arc/Makefile
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@ -100,6 +100,8 @@ ifneq ($(platform-y),)
core-y += arch/arc/plat-$(PLATFORM)/ core-y += arch/arc/plat-$(PLATFORM)/
endif endif
drivers-$(CONFIG_OPROFILE) += arch/arc/oprofile/
libs-y += arch/arc/lib/ $(LIBGCC) libs-y += arch/arc/lib/ $(LIBGCC)
#default target for make without any arguements. #default target for make without any arguements.

9
arch/arc/oprofile/Makefile Normal file
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@ -0,0 +1,9 @@
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

26
arch/arc/oprofile/common.c Normal file
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@ -0,0 +1,26 @@
/*
* 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();
}