From 2aa4a1523b40a065bc3a31e20097ea7a618ec3de Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Sun, 1 Apr 2012 14:38:42 -0700 Subject: blkcg: BLKIO_STAT_CPU_SECTORS doesn't have subcounters BLKIO_STAT_CPU_SECTORS doesn't need read/write/sync/async subcounters and is counted by blkio_group_stats_cpu->sectors; however, it still holds a member in blkio_group_stats_cpu->stat_arr_cpu. Rearrange stat_type_cpu and define BLKIO_STAT_CPU_ARR_NR and use it for stat_arr_cpu[] size so that only SERVICE_BYTES and SERVICED have subcounters. Signed-off-by: Tejun Heo --- block/blk-cgroup.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'block/blk-cgroup.h') diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h index 1add3dcfc19..2060d812ae8 100644 --- a/block/blk-cgroup.h +++ b/block/blk-cgroup.h @@ -58,14 +58,17 @@ enum stat_type { /* Per cpu stats */ enum stat_type_cpu { - BLKIO_STAT_CPU_SECTORS, /* Total bytes transferred */ BLKIO_STAT_CPU_SERVICE_BYTES, /* Total IOs serviced, post merge */ BLKIO_STAT_CPU_SERVICED, - BLKIO_STAT_CPU_NR + + /* All the single valued stats go below this */ + BLKIO_STAT_CPU_SECTORS, }; +#define BLKIO_STAT_CPU_ARR_NR (BLKIO_STAT_CPU_SERVICED + 1) + enum stat_sub_type { BLKIO_STAT_READ = 0, BLKIO_STAT_WRITE, @@ -167,7 +170,7 @@ struct blkio_group_stats { /* Per cpu blkio group stats */ struct blkio_group_stats_cpu { uint64_t sectors; - uint64_t stat_arr_cpu[BLKIO_STAT_CPU_NR][BLKIO_STAT_TOTAL]; + uint64_t stat_arr_cpu[BLKIO_STAT_CPU_ARR_NR][BLKIO_STAT_TOTAL]; struct u64_stats_sync syncp; }; -- cgit v1.2.3-70-g09d2