diff options
| author | Hiroshi Doyu <hdoyu@nvidia.com> | 2013-04-12 12:43:43 +0300 |
|---|---|---|
| committer | Hiroshi Doyu <hdoyu@nvidia.com> | 2013-10-13 23:17:56 -0700 |
| commit | 6a32c3e687f883f2c66e2365ae8287c076388153 (patch) | |
| tree | 758c06f9ac68269e767513e62d2f518c84e51454 /mm | |
| parent | d6d56590c5c36d2f6e172e8e0e26d100be5125a3 (diff) | |
mm: Expose lazy vfree pages to control via sysctl
Create "/proc/sys/lazy_vfree_pages" file to control lazy vfree pages
Bug 1238957
Change-Id: I75a296ae035d8cedb817319d8f4a5579ae6cf1ba
Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com>
Reviewed-on: http://git-master/r/289616
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/vmalloc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index d365724feb05..396c71c396a0 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -552,13 +552,16 @@ static void vmap_debug_free_range(unsigned long start, unsigned long end) * code, and it will be simple to change the scale factor if we find that it * becomes a problem on bigger systems. */ + +int sysctl_lazy_vfree_pages = 32UL * 1024 * 1024 / PAGE_SIZE; + static unsigned long lazy_max_pages(void) { unsigned int log; log = fls(num_online_cpus()); - return log * (32UL * 1024 * 1024 / PAGE_SIZE); + return log * sysctl_lazy_vfree_pages; } static atomic_t vmap_lazy_nr = ATOMIC_INIT(0); |