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-rw-r--r--block/blk-cgroup.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h
index 1fa3c5e8d87f..8bdcf504f94b 100644
--- a/block/blk-cgroup.h
+++ b/block/blk-cgroup.h
@@ -39,6 +39,7 @@ enum stat_type {
BLKIO_STAT_WAIT_TIME,
/* Number of IOs queued up */
BLKIO_STAT_QUEUED,
+
/* All the single valued stats go below this */
BLKIO_STAT_TIME,
#ifdef CONFIG_DEBUG_BLK_CGROUP
@@ -52,6 +53,9 @@ enum stat_type {
#endif
};
+/* Types lower than this live in stat_arr and have subtypes */
+#define BLKIO_STAT_ARR_NR (BLKIO_STAT_QUEUED + 1)
+
/* Per cpu stats */
enum stat_type_cpu {
BLKIO_STAT_CPU_SECTORS,
@@ -117,7 +121,7 @@ struct blkio_cgroup {
struct blkio_group_stats {
/* total disk time and nr sectors dispatched by this group */
uint64_t time;
- uint64_t stat_arr[BLKIO_STAT_QUEUED + 1][BLKIO_STAT_TOTAL];
+ uint64_t stat_arr[BLKIO_STAT_ARR_NR][BLKIO_STAT_TOTAL];
#ifdef CONFIG_DEBUG_BLK_CGROUP
/* Time not charged to this cgroup */
uint64_t unaccounted_time;