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authorRichard Kennedy <richard@rsk.demon.co.uk>2010-03-25 07:27:36 -0400
committerSteven Rostedt <rostedt@goodmis.org>2010-07-20 21:58:44 -0400
commit985023dee6e212493831431ba2e3ce8918f001b2 (patch)
tree7b8afee8eed100ff3ab1069504598445e644fe05 /kernel
parente870e9a1240bcef1157ffaaf71dac63362e71904 (diff)
trace: Reorder struct ring_buffer_per_cpu to remove padding on 64bit
Reorder structure to remove 8 bytes of padding on 64 bit builds. This shrinks the size to 128 bytes so allowing allocation from a smaller slab & needed one fewer cache lines. Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk> LKML-Reference: <1269516456.2054.8.camel@localhost> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/ring_buffer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 28d0615a513f..3632ce87674f 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -443,6 +443,7 @@ int ring_buffer_print_page_header(struct trace_seq *s)
443 */ 443 */
444struct ring_buffer_per_cpu { 444struct ring_buffer_per_cpu {
445 int cpu; 445 int cpu;
446 atomic_t record_disabled;
446 struct ring_buffer *buffer; 447 struct ring_buffer *buffer;
447 spinlock_t reader_lock; /* serialize readers */ 448 spinlock_t reader_lock; /* serialize readers */
448 arch_spinlock_t lock; 449 arch_spinlock_t lock;
@@ -462,7 +463,6 @@ struct ring_buffer_per_cpu {
462 unsigned long read; 463 unsigned long read;
463 u64 write_stamp; 464 u64 write_stamp;
464 u64 read_stamp; 465 u64 read_stamp;
465 atomic_t record_disabled;
466}; 466};
467 467
468struct ring_buffer { 468struct ring_buffer {