| commit | d6d897cec29252b8d0785198cfa6ca16d30c739d | |
| author | Ingo Molnar <mingo@elte.hu> | |
| Mon, 10 Jul 2006 11:44:04 +0000 (10 04:44 -0700) | ||
| committer | Linus Torvalds <torvalds@g5.osdl.org> | |
| Mon, 10 Jul 2006 20:24:14 +0000 (10 13:24 -0700) | ||
| tree | 01b138b10c7afa0e88e9720be3d3616e4f0bccc1 | treesnapshot (tar.gz zip) |
| parent | 55794a412fdf9af1744800e5020a4ec6b21e3cdc | commitdiff |
[PATCH] lockdep: core, reduce per-lock class-cache size
lockdep_map is embedded into every lock, which blows up data structure
sizes all around the kernel. Reduce the class-cache to be for the default
class only - that is used in 99.9% of the cases and even if we dont have a
class cached, the lookup in the class-hash is lockless.
This change reduces the per-lock dep_map overhead by 56 bytes on 64-bit
platforms and by 28 bytes on 32-bit platforms.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
lockdep_map is embedded into every lock, which blows up data structure
sizes all around the kernel. Reduce the class-cache to be for the default
class only - that is used in 99.9% of the cases and even if we dont have a
class cached, the lookup in the class-hash is lockless.
This change reduces the per-lock dep_map overhead by 56 bytes on 64-bit
platforms and by 28 bytes on 32-bit platforms.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| include/linux/lockdep.h | diffblobblamehistory | |
| kernel/lockdep.c | diffblobblamehistory |