Commit-ID: 985023dee6e212493831431ba2e3ce8918f001b2
Gitweb: http://git.kernel.org/tip/985023dee6e212493831431ba2e3ce8918f001b2
Author: Richard Kennedy <richard@xxxxxxxxxxxxxxx>
AuthorDate: Thu, 25 Mar 2010 11:27:36 +0000
Committer: Steven Rostedt <rostedt@xxxxxxxxxxx>
CommitDate: Tue, 20 Jul 2010 21:58:44 -0400
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@xxxxxxxxxxxxxxx>
LKML-Reference: <1269516456.2054.8.camel@localhost>
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
kernel/trace/ring_buffer.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 28d0615..3632ce8 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)
*/
struct ring_buffer_per_cpu {
int cpu;
+ atomic_t record_disabled;
struct ring_buffer *buffer;
spinlock_t reader_lock; /* serialize readers */
arch_spinlock_t lock;
@@ -462,7 +463,6 @@ struct ring_buffer_per_cpu {
unsigned long read;
u64 write_stamp;
u64 read_stamp;
- atomic_t record_disabled;
};
struct ring_buffer {
--
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