diff options
| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2009-04-03 03:57:47 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-03 06:04:56 +0400 |
| commit | 627991a20b3f4d504d20466ab405fe035cb1a20a (patch) | |
| tree | ac1d7e0bc0881cf31c72ab1f830de904d52ef13e | |
| parent | a3b2d692690aef228e493b1beaafe5364cab3237 (diff) | |
| download | linux-627991a20b3f4d504d20466ab405fe035cb1a20a.tar.xz | |
memcg: remove redundant message at swapon
It's pointed out that swap_cgroup's message at swapon() is nonsense.
Because
* It can be calculated very easily if all necessary information is
written in Kconfig.
* It's not necessary to annoying people at every swapon().
In other view, now, memory usage per swp_entry is reduced to 2bytes from
8bytes(64bit) and I think it's reasonably small.
Reported-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | init/Kconfig | 2 | ||||
| -rw-r--r-- | mm/page_cgroup.c | 7 |
2 files changed, 2 insertions, 7 deletions
diff --git a/init/Kconfig b/init/Kconfig index 14c483d2b7c9..92d410603932 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -597,6 +597,8 @@ config CGROUP_MEM_RES_CTLR_SWAP is disabled by boot option, this will be automatically disabled and there will be no overhead from this. Even when you set this config=y, if boot option "noswapaccount" is set, swap will not be accounted. + Now, memory usage of swap_cgroup is 2 bytes per entry. If swap page + size is 4096bytes, 512k per 1Gbytes of swap. endif # CGROUPS diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c index ebf81074bed4..791905c991df 100644 --- a/mm/page_cgroup.c +++ b/mm/page_cgroup.c @@ -426,13 +426,6 @@ int swap_cgroup_swapon(int type, unsigned long max_pages) } mutex_unlock(&swap_cgroup_mutex); - printk(KERN_INFO - "swap_cgroup: uses %ld bytes of vmalloc for pointer array space" - " and %ld bytes to hold mem_cgroup information per swap ents\n", - array_size, length * PAGE_SIZE); - printk(KERN_INFO - "swap_cgroup can be disabled by noswapaccount boot option.\n"); - return 0; nomem: printk(KERN_INFO "couldn't allocate enough memory for swap_cgroup.\n"); |