From 769bc1fd7b8591a312d4c5c8834bc6510272938e Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Tue, 22 Jan 2013 17:02:38 +0530 Subject: ARC: OProfile support Signed-off-by: Vineet Gupta Cc: Robert Richter Cc: oprofile-list@lists.sf.net Reviewed-by: James Hogan --- arch/arc/Kconfig | 1 + arch/arc/Makefile | 2 ++ arch/arc/oprofile/Makefile | 9 +++++++++ arch/arc/oprofile/common.c | 26 ++++++++++++++++++++++++++ 4 files changed, 38 insertions(+) create mode 100644 arch/arc/oprofile/Makefile create mode 100644 arch/arc/oprofile/common.c diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 409b9378032..405ea7a756b 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -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 diff --git a/arch/arc/Makefile b/arch/arc/Makefile index 5c98fc19d99..642c0406d60 100644 --- a/arch/arc/Makefile +++ b/arch/arc/Makefile @@ -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/ $(LIBGCC) #default target for make without any arguements. diff --git a/arch/arc/oprofile/Makefile b/arch/arc/oprofile/Makefile new file mode 100644 index 00000000000..ce417a6e70b --- /dev/null +++ b/arch/arc/oprofile/Makefile @@ -0,0 +1,9 @@ +obj-$(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 diff --git a/arch/arc/oprofile/common.c b/arch/arc/oprofile/common.c new file mode 100644 index 00000000000..c80fcad4a5a --- /dev/null +++ b/arch/arc/oprofile/common.c @@ -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 + */ + +#include +#include + +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(); +} -- cgit v1.2.3-18-g5258