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| author | Richard Kennedy <richard@rsk.demon.co.uk> | 2010-03-25 11:27:36 +0000 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2010-07-20 21:58:44 -0400 |
| commit | 985023dee6e212493831431ba2e3ce8918f001b2 (patch) | |
| tree | 7b8afee8eed100ff3ab1069504598445e644fe05 /kernel | |
| parent | e870e9a1240bcef1157ffaaf71dac63362e71904 (diff) | |
| download | linux-985023dee6e212493831431ba2e3ce8918f001b2.tar.gz linux-985023dee6e212493831431ba2e3ce8918f001b2.tar.bz2 linux-985023dee6e212493831431ba2e3ce8918f001b2.zip | |
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.c | 2 |
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) */ 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 { |