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| author | Matt Fleming <matt@console-pimps.org> | 2010-09-10 20:36:23 +0100 |
|---|---|---|
| committer | Robert Richter <robert.richter@amd.com> | 2010-10-11 17:46:16 +0200 |
| commit | 86c8c04792f152c5469023885510140dd34817bc (patch) | |
| tree | 367ed782c323a4d1f11d773e9ea9790741fa4968 /arch/sh/Kconfig | |
| parent | 3d90a00763b51e1db344a7430c966be723b67a29 (diff) | |
| download | lwn-86c8c04792f152c5469023885510140dd34817bc.tar.gz lwn-86c8c04792f152c5469023885510140dd34817bc.zip | |
sh: oprofile: Use perf-events oprofile backend
Now that we've got a generic perf-events based oprofile backend we might
as well make use of it seeing as SH doesn't do anything special with its
oprofile backend. Also introduce a new CONFIG_HW_PERF_EVENTS symbol so
that we can fallback to using the timer interrupt for oprofile if the
CPU doesn't support perf events.
Also, to avoid a section mismatch warning we need to annotate
oprofile_arch_exit() with an __exit marker.
Signed-off-by: Matt Fleming <matt@console-pimps.org>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Robert Richter <robert.richter@amd.com>
Diffstat (limited to 'arch/sh/Kconfig')
| -rw-r--r-- | arch/sh/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig index 33990fa95af0..35b6c3f85173 100644 --- a/arch/sh/Kconfig +++ b/arch/sh/Kconfig @@ -249,6 +249,11 @@ config ARCH_SHMOBILE select PM select PM_RUNTIME +config CPU_HAS_PMU + depends on CPU_SH4 || CPU_SH4A + default y + bool + if SUPERH32 choice @@ -738,6 +743,14 @@ config GUSA_RB LLSC, this should be more efficient than the other alternative of disabling interrupts around the atomic sequence. +config HW_PERF_EVENTS + bool "Enable hardware performance counter support for perf events" + depends on PERF_EVENTS && CPU_HAS_PMU + default y + help + Enable hardware performance counter support for perf events. If + disabled, perf events will use software events only. + source "drivers/sh/Kconfig" endmenu |