diff options
| author |   Paul Jackson <pj@sgi.com> | 2006-01-08 01:01:54 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-08 20:13:43 -0800 |
| commit | cf2a473c4089aa41c26f653200673f5a4cc25047 (patch) | |
| tree | 0bce21f4684a382b13e93ba5b85409cf5eab1c2c /include | |
| parent | [PATCH] cpuset: fork hook fix (diff) | |
| download | linux-dev-cf2a473c4089aa41c26f653200673f5a4cc25047.tar.xz linux-dev-cf2a473c4089aa41c26f653200673f5a4cc25047.zip | |
[PATCH] cpuset: combine refresh_mems and update_mems
The important code paths through alloc_pages_current() and alloc_page_vma(),
by which most kernel page allocations go, both called
cpuset_update_current_mems_allowed(), which in turn called refresh_mems().
-Both- of these latter two routines did a tasklock, got the tasks cpuset
pointer, and checked for out of date cpuset->mems_generation.
That was a silly duplication of code and waste of CPU cycles on an important
code path.
Consolidated those two routines into a single routine, called
cpuset_update_task_memory_state(), since it updates more than just
mems_allowed.
Changed all callers of either routine to call the new consolidated routine.
Signed-off-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/cpuset.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/cpuset.h b/include/linux/cpuset.h index 736d73801cb6..1feebf16ab08 100644 --- a/include/linux/cpuset.h +++ b/include/linux/cpuset.h @@ -20,7 +20,7 @@ extern void cpuset_fork(struct task_struct *p); extern void cpuset_exit(struct task_struct *p); extern cpumask_t cpuset_cpus_allowed(const struct task_struct *p); void cpuset_init_current_mems_allowed(void); -void cpuset_update_current_mems_allowed(void); +void cpuset_update_task_memory_state(void); #define cpuset_nodes_subset_current_mems_allowed(nodes) \ nodes_subset((nodes), current->mems_allowed) int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl); @@ -51,7 +51,7 @@ static inline cpumask_t cpuset_cpus_allowed(struct task_struct *p) } static inline void cpuset_init_current_mems_allowed(void) {} -static inline void cpuset_update_current_mems_allowed(void) {} +static inline void cpuset_update_task_memory_state(void) {} #define cpuset_nodes_subset_current_mems_allowed(nodes) (1) static inline int cpuset_zonelist_valid_mems_allowed(struct zonelist *zl) |