From 0b0c3a45a7613aef7bdda93830360905e0f10dfe Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Thu, 3 May 2012 15:43:39 +1000 Subject: [PATCH] memcg: track resource index in cftype private This patch adds a new charge type _MEMHUGETLB for tracking hugetlb resources. We also use cftype to encode the hugetlb resource index. This helps in using same memcg callbacks for hugetlb control files. Signed-off-by: Aneesh Kumar K.V Acked-by: KAMEZAWA Hiroyuki Cc: Hillf Danton Cc: Michal Hocko Cc: Andrea Arcangeli Cc: Johannes Weiner Signed-off-by: Andrew Morton --- mm/memcontrol.c | 27 +++++++++++++++++++++------ 1 file changed, 21 insertions(+), 6 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 201be330b3fe..e3e2b8622649 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -391,9 +391,14 @@ enum charge_type { #define _MEM (0) #define _MEMSWAP (1) #define _OOM_TYPE (2) -#define MEMFILE_PRIVATE(x, val) (((x) << 16) | (val)) -#define MEMFILE_TYPE(val) (((val) >> 16) & 0xffff) -#define MEMFILE_ATTR(val) ((val) & 0xffff) +#define _MEMHUGETLB (3) + +/* 0 ... val ...16.... x...24...idx...32*/ +#define __MEMFILE_PRIVATE(idx, x, val) (((idx) << 24) | ((x) << 16) | (val)) +#define MEMFILE_PRIVATE(x, val) __MEMFILE_PRIVATE(0, x, val) +#define MEMFILE_TYPE(val) (((val) >> 16) & 0xff) +#define MEMFILE_IDX(val) (((val) >> 24) & 0xff) +#define MEMFILE_ATTR(val) ((val) & 0xffff) /* Used for OOM nofiier */ #define OOM_CONTROL (0) @@ -4007,7 +4012,7 @@ static ssize_t mem_cgroup_read(struct cgroup *cont, struct cftype *cft, struct mem_cgroup *memcg = mem_cgroup_from_cont(cont); char str[64]; u64 val; - int type, name, len; + int type, name, len, idx; type = MEMFILE_TYPE(cft->private); name = MEMFILE_ATTR(cft->private); @@ -4028,6 +4033,10 @@ static ssize_t mem_cgroup_read(struct cgroup *cont, struct cftype *cft, else val = res_counter_read_u64(&memcg->memsw, name); break; + case _MEMHUGETLB: + idx = MEMFILE_IDX(cft->private); + val = res_counter_read_u64(&memcg->hugepage[idx], name); + break; default: BUG(); } @@ -4065,7 +4074,10 @@ static int mem_cgroup_write(struct cgroup *cont, struct cftype *cft, break; if (type == _MEM) ret = mem_cgroup_resize_limit(memcg, val); - else + else if (type == _MEMHUGETLB) { + int idx = MEMFILE_IDX(cft->private); + ret = res_counter_set_limit(&memcg->hugepage[idx], val); + } else ret = mem_cgroup_resize_memsw_limit(memcg, val); break; case RES_SOFT_LIMIT: @@ -4131,7 +4143,10 @@ static int mem_cgroup_reset(struct cgroup *cont, unsigned int event) case RES_MAX_USAGE: if (type == _MEM) res_counter_reset_max(&memcg->res); - else + else if (type == _MEMHUGETLB) { + int idx = MEMFILE_IDX(event); + res_counter_reset_max(&memcg->hugepage[idx]); + } else res_counter_reset_max(&memcg->memsw); break; case RES_FAILCNT: -- 2.39.5