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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2009-10-08 12:05:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-10-08 12:05:50 -0700 |
| commit | b924f9599dfd4a604761e84b1e920e480fb57f66 (patch) | |
| tree | a1456ef8aea8beb8415d8258a978e072467d8ff6 /tools/perf/design.txt | |
| parent | Merge branch 'perf-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip (diff) | |
| parent | mm, perf_event: Make vmalloc_user() align base kernel virtual address to SHMLBA (diff) | |
| download | linux-dev-b924f9599dfd4a604761e84b1e920e480fb57f66.tar.xz linux-dev-b924f9599dfd4a604761e84b1e920e480fb57f66.zip | |
Merge branch 'sparc-perf-events-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sparc-perf-events-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
mm, perf_event: Make vmalloc_user() align base kernel virtual address to SHMLBA
perf_event: Provide vmalloc() based mmap() backing
Diffstat (limited to 'tools/perf/design.txt')
| -rw-r--r-- | tools/perf/design.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/design.txt b/tools/perf/design.txt index f1946d107b10..fdd42a824c98 100644 --- a/tools/perf/design.txt +++ b/tools/perf/design.txt @@ -455,3 +455,6 @@ will need at least this: If your architecture does have hardware capabilities, you can override the weak stub hw_perf_event_init() to register hardware counters. + +Architectures that have d-cache aliassing issues, such as Sparc and ARM, +should select PERF_USE_VMALLOC in order to avoid these for perf mmap(). |