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| author |   Michael Cree <mcree@orcon.net.nz> | 2010-08-09 17:20:08 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-09 20:45:04 -0700 |
| commit | 979f867191f80e74713394cf8c0a3c1b3662b648 (patch) | |
| tree | e2483309110e2e285330e7fd2e5f50eb25dced25 /arch/alpha/include/asm/perf_event.h | |
| parent | alpha: add wrperfmon.h header file to aid use of wrperfmon PALcall (diff) | |
| download | linux-dev-979f867191f80e74713394cf8c0a3c1b3662b648.tar.xz linux-dev-979f867191f80e74713394cf8c0a3c1b3662b648.zip | |
alpha: implement HW performance events on the EV67 and later CPUs
This implements hardware performance events for the EV67 and later CPUs
within the Linux performance events subsystem. Only using the performance
monitoring unit in HP/Compaq's so called "Aggregrate mode" is supported.
The code has been implemented in a manner that makes extension to other
older Alpha CPUs relatively straightforward should some mug wish to
indulge themselves.
Signed-off-by: Michael Cree <mcree@orcon.net.nz>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jay Estabrook <jay.estabrook@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/alpha/include/asm/perf_event.h')
| -rw-r--r-- | arch/alpha/include/asm/perf_event.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/alpha/include/asm/perf_event.h b/arch/alpha/include/asm/perf_event.h index 3bef8522017c..4157cd3c44a9 100644 --- a/arch/alpha/include/asm/perf_event.h +++ b/arch/alpha/include/asm/perf_event.h @@ -2,8 +2,14 @@ #define __ASM_ALPHA_PERF_EVENT_H /* Alpha only supports software events through this interface. */ -static inline void set_perf_event_pending(void) { } +extern void set_perf_event_pending(void); #define PERF_EVENT_INDEX_OFFSET 0 +#ifdef CONFIG_PERF_EVENTS +extern void init_hw_perf_events(void); +#else +static inline void init_hw_perf_events(void) { } +#endif + #endif /* __ASM_ALPHA_PERF_EVENT_H */ |