Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid

[linux-beck.git] / tools / perf / design.txt

diff --git a/tools/perf/design.txt b/tools/perf/design.txt
index f1946d107b108b9e150138281f1617d7866d4aa5..fdd42a824c9870be6c1cfce297dc552093fa45f6 100644 (file)
--- 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().