Merge git://git.infradead.org/~dwmw2/iommu-2.6.32

[cascardo/linux.git] / tools / perf / design.txt

diff --git a/tools/perf/design.txt b/tools/perf/design.txt
index f1946d1..fdd42a8 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().