提交 985023de 编写于 作者: R Richard Kennedy 提交者: Steven Rostedt

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: NRichard Kennedy <richard@rsk.demon.co.uk>
LKML-Reference: <1269516456.2054.8.camel@localhost>
Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
上级 e870e9a1
...@@ -443,6 +443,7 @@ int ring_buffer_print_page_header(struct trace_seq *s) ...@@ -443,6 +443,7 @@ int ring_buffer_print_page_header(struct trace_seq *s)
*/ */
struct ring_buffer_per_cpu { struct ring_buffer_per_cpu {
int cpu; int cpu;
atomic_t record_disabled;
struct ring_buffer *buffer; struct ring_buffer *buffer;
spinlock_t reader_lock; /* serialize readers */ spinlock_t reader_lock; /* serialize readers */
arch_spinlock_t lock; arch_spinlock_t lock;
...@@ -462,7 +463,6 @@ struct ring_buffer_per_cpu { ...@@ -462,7 +463,6 @@ struct ring_buffer_per_cpu {
unsigned long read; unsigned long read;
u64 write_stamp; u64 write_stamp;
u64 read_stamp; u64 read_stamp;
atomic_t record_disabled;
}; };
struct ring_buffer { struct ring_buffer {
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册