[PATCH 1/2] perf_event: remove unused DEBUG_PERF_USE_VMALLOC

Kim Phillips kim.phillips at arm.com
Wed Aug 31 05:08:34 AEST 2016

This 'DEBUG'-prefixed version of PERF_USE_VMALLOC is not used anywhere.
It appears to be leftovers from commit 906010b "perf_event: Provide
vmalloc() based mmap() backing" that introduced it.

Not sure what commit cb30711 "perf_event: Don't allow vmalloc() backed
perf on powerpc" was trying to do with it either.

Signed-off-by: Kim Phillips <kim.phillips at arm.com>
Cc: Peter Zijlstra <a.p.zijlstra at chello.nl>
Cc: Michael Ellerman <mpe at ellerman.id.au>
 init/Kconfig | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/init/Kconfig b/init/Kconfig
index cac3f09..934a61f 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1707,19 +1707,6 @@ config PERF_EVENTS
 	  Say Y if unsure.
-	default n
-	bool "Debug: use vmalloc to back perf mmap() buffers"
-	depends on PERF_EVENTS && DEBUG_KERNEL && !PPC
-	help
-	 Use vmalloc memory to back perf mmap() buffers.
-	 Mostly useful for debugging the vmalloc code on platforms
-	 that don't require it.
-	 Say N if unsure.

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