diff options
| author | Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> | 2009-09-23 15:56:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-24 07:20:59 -0700 |
| commit | 1dd3a27326d307952f8ad2499478c84dc7311517 (patch) | |
| tree | ae59d52935c790dd3fd0c8e12af5855cfe1abfcb | |
| parent | 0c3e73e84fe3f64cf1c2e8bb4e91e8901cbcdc38 (diff) | |
| download | lwn-1dd3a27326d307952f8ad2499478c84dc7311517.tar.gz lwn-1dd3a27326d307952f8ad2499478c84dc7311517.zip | |
memcg: show swap usage in stat file
We now count MEM_CGROUP_STAT_SWAPOUT, so we can show swap usage. It would
be useful for users to show swap usage in memory.stat file, because they
don't need calculate memsw.usage - res.usage to know swap usage.
Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/memcontrol.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 2011f15278fd..e2b98a6875c0 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2676,6 +2676,7 @@ enum { MCS_MAPPED_FILE, MCS_PGPGIN, MCS_PGPGOUT, + MCS_SWAP, MCS_INACTIVE_ANON, MCS_ACTIVE_ANON, MCS_INACTIVE_FILE, @@ -2697,6 +2698,7 @@ struct { {"mapped_file", "total_mapped_file"}, {"pgpgin", "total_pgpgin"}, {"pgpgout", "total_pgpgout"}, + {"swap", "total_swap"}, {"inactive_anon", "total_inactive_anon"}, {"active_anon", "total_active_anon"}, {"inactive_file", "total_inactive_file"}, @@ -2721,6 +2723,10 @@ static int mem_cgroup_get_local_stat(struct mem_cgroup *mem, void *data) s->stat[MCS_PGPGIN] += val; val = mem_cgroup_read_stat(&mem->stat, MEM_CGROUP_STAT_PGPGOUT_COUNT); s->stat[MCS_PGPGOUT] += val; + if (do_swap_account) { + val = mem_cgroup_read_stat(&mem->stat, MEM_CGROUP_STAT_SWAPOUT); + s->stat[MCS_SWAP] += val * PAGE_SIZE; + } /* per zone stat */ val = mem_cgroup_get_local_zonestat(mem, LRU_INACTIVE_ANON); @@ -2752,8 +2758,11 @@ static int mem_control_stat_show(struct cgroup *cont, struct cftype *cft, memset(&mystat, 0, sizeof(mystat)); mem_cgroup_get_local_stat(mem_cont, &mystat); - for (i = 0; i < NR_MCS_STAT; i++) + for (i = 0; i < NR_MCS_STAT; i++) { + if (i == MCS_SWAP && !do_swap_account) + continue; cb->fill(cb, memcg_stat_strings[i].local_name, mystat.stat[i]); + } /* Hierarchical information */ { @@ -2766,9 +2775,11 @@ static int mem_control_stat_show(struct cgroup *cont, struct cftype *cft, memset(&mystat, 0, sizeof(mystat)); mem_cgroup_get_total_stat(mem_cont, &mystat); - for (i = 0; i < NR_MCS_STAT; i++) + for (i = 0; i < NR_MCS_STAT; i++) { + if (i == MCS_SWAP && !do_swap_account) + continue; cb->fill(cb, memcg_stat_strings[i].total_name, mystat.stat[i]); - + } #ifdef CONFIG_DEBUG_VM cb->fill(cb, "inactive_ratio", calc_inactive_ratio(mem_cont, NULL)); |