aboutsummaryrefslogtreecommitdiff
path: root/include/asm-generic/bug.h
diff options
context:
space:
mode:
authorJan Beulich <JBeulich@suse.com>2012-03-23 15:01:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-23 16:58:31 -0700
commit7ccaba5314caf3a2b1052edb3146ccc969b4d466 (patch)
treeb2d2c6a0c188794bf334b163bd89d827c84c1462 /include/asm-generic/bug.h
parent10db4e1e4e9a910a26b94045660e5ba7e7c71419 (diff)
consolidate WARN_...ONCE() static variables
Due to the alignment of following variables, these typically consume more than just the single byte that 'bool' requires, and as there are a few hundred instances, the cache pollution (not so much the waste of memory) sums up. Put these variables into their own section, outside of any half way frequently used memory range. Do the same also to the __warned variable of rcu_lockdep_assert(). (Don't, however, include the ones used by printk_once() and alike, as they can potentially be hot.) Signed-off-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-generic/bug.h')
-rw-r--r--include/asm-generic/bug.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index 84458b0c38d..2520a6e241d 100644
--- a/include/asm-generic/bug.h
+++ b/include/asm-generic/bug.h
@@ -134,7 +134,7 @@ extern void warn_slowpath_null(const char *file, const int line);
#endif
#define WARN_ON_ONCE(condition) ({ \
- static bool __warned; \
+ static bool __section(.data.unlikely) __warned; \
int __ret_warn_once = !!(condition); \
\
if (unlikely(__ret_warn_once)) \
@@ -144,7 +144,7 @@ extern void warn_slowpath_null(const char *file, const int line);
})
#define WARN_ONCE(condition, format...) ({ \
- static bool __warned; \
+ static bool __section(.data.unlikely) __warned; \
int __ret_warn_once = !!(condition); \
\
if (unlikely(__ret_warn_once)) \
@@ -154,7 +154,7 @@ extern void warn_slowpath_null(const char *file, const int line);
})
#define WARN_TAINT_ONCE(condition, taint, format...) ({ \
- static bool __warned; \
+ static bool __section(.data.unlikely) __warned; \
int __ret_warn_once = !!(condition); \
\
if (unlikely(__ret_warn_once)) \