Re: [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu access overhead

Christoph Lameter
2007-11-01T00:53:37Z

> This patch fixes build failures with DEBUG_VM disabled.

Well there is more there. Last minute mods sigh. With DEBUG_VM you likely
need this patch.

---
include/linux/percpu.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

Index: linux-2.6/include/linux/percpu.h
===================================================================
--- linux-2.6.orig/include/linux/percpu.h 2007-10-31 17:48:38.020499686 -0700
+++ linux-2.6/include/linux/percpu.h 2007-10-31 17:51:01.423372247 -0700
@@ -36,7 +36,7 @@
#ifdef CONFIG_DEBUG_VM
#define __percpu_disguise(pdata) ((void *)~(unsigned long)(pdata))
#else
-#define __percpu_disguide(pdata) ((void *)(pdata))
+#define __percpu_disguise(pdata) ((void *)(pdata))
#endif

/*
@@ -53,7 +53,7 @@

#define this_cpu_ptr(ptr) \
({ \
- void *p = ptr; \
+ void *p = __percpu_disguise(ptr); \
(__typeof__(ptr))(p + this_cpu_offset()); \
})