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| author | Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> | 2024-10-03 10:06:38 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2024-10-03 10:58:50 +0300 |
| commit | 444d6824a4feca142b0a57095a2f1f1bda98e2ab (patch) | |
| tree | a726e5d7a7ef15f76719ba298acaa490ad04eaa7 /tools/perf/scripts/python/syscall-counts.py | |
| parent | 093227bc53a023991ba04315f42839a22b613113 (diff) | |
| download | linux-444d6824a4feca142b0a57095a2f1f1bda98e2ab.tar.xz | |
soundwire: optimize sdw_stream_runtime memory layout
pahole suggestion: swap position of 'm_rt_count'
before: pahole -C sdw_stream_runtime drivers/soundwire/soundwire-bus.ko
struct sdw_stream_runtime {
const char * name; /* 0 8 */
struct sdw_stream_params params; /* 8 12 */
enum sdw_stream_state state; /* 20 4 */
enum sdw_stream_type type; /* 24 4 */
/* XXX 4 bytes hole, try to pack */
struct list_head master_list; /* 32 16 */
int m_rt_count; /* 48 4 */
/* size: 56, cachelines: 1, members: 6 */
/* sum members: 48, holes: 1, sum holes: 4 */
/* padding: 4 */
/* last cacheline: 56 bytes */
};
after: pahole --reorganize -C sdw_stream_runtime drivers/soundwire/soundwire-bus.ko
struct sdw_stream_runtime {
const char * name; /* 0 8 */
struct sdw_stream_params params; /* 8 12 */
enum sdw_stream_state state; /* 20 4 */
enum sdw_stream_type type; /* 24 4 */
int m_rt_count; /* 28 4 */
struct list_head master_list; /* 32 16 */
/* size: 48, cachelines: 1, members: 6 */
/* last cacheline: 48 bytes */
}; /* saved 8 bytes! */
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20241003070650.62787-3-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions