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| author |   Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-09-21 16:08:49 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2009-10-06 14:21:50 +0200 |
| commit | 906010b2134e14a2e377decbadd357b3d0ab9c6a (patch) | |
| tree | 598b30d08f5ca8df1e00abc295b120fa1bd2c2e2 /arch | |
| parent | perf_events: Make ABI definitions available to userspace (diff) | |
| download | linux-dev-906010b2134e14a2e377decbadd357b3d0ab9c6a.tar.xz linux-dev-906010b2134e14a2e377decbadd357b3d0ab9c6a.zip | |
perf_event: Provide vmalloc() based mmap() backing
Some architectures such as Sparc, ARM and MIPS (basically
everything with flush_dcache_page()) need to deal with dcache
aliases by carefully placing pages in both kernel and user maps.
These architectures typically have to use vmalloc_user() for this.
However, on other architectures, vmalloc() is not needed and has
the downsides of being more restricted and slower than regular
allocations.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: David Miller <davem@davemloft.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1254830228.21044.272.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sparc/Kconfig | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 97fca4695e0b..9b70a2f28dc7 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -26,6 +26,7 @@ config SPARC select RTC_CLASS select RTC_DRV_M48T59 select HAVE_PERF_EVENTS + select PERF_USE_VMALLOC select HAVE_DMA_ATTRS select HAVE_DMA_API_DEBUG @@ -48,6 +49,7 @@ config SPARC64 select RTC_DRV_SUN4V select RTC_DRV_STARFIRE select HAVE_PERF_EVENTS + select PERF_USE_VMALLOC config ARCH_DEFCONFIG string |