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authorTejun Heo <tj@kernel.org>2012-03-05 13:15:17 -0800
committerJens Axboe <axboe@kernel.dk>2012-03-06 21:27:23 +0100
commitc1768268f9424410761da57ea71107acae7b03cc (patch)
treebe6a534b1a15ab9df9f23e585b039776c5a5e498 /block/blk-cgroup.h
parent549d3aa872cd1aec1ee540fd93afd9611faa0def (diff)
downloadblackbird-op-linux-c1768268f9424410761da57ea71107acae7b03cc.tar.gz
blackbird-op-linux-c1768268f9424410761da57ea71107acae7b03cc.zip
blkcg: don't use blkg->plid in stat related functions
blkg is scheduled to be unified for all policies and thus there won't be one-to-one mapping from blkg to policy. Update stat related functions to take explicit @pol or @plid arguments and not use blkg->plid. This is painful for now but most of specific stat interface functions will be replaced with a handful of generic helpers. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-cgroup.h')
-rw-r--r--block/blk-cgroup.h80
1 files changed, 50 insertions, 30 deletions
diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h
index 5dffd436f30d..60e96b4be4ce 100644
--- a/block/blk-cgroup.h
+++ b/block/blk-cgroup.h
@@ -335,12 +335,17 @@ static inline void blkg_put(struct blkio_group *blkg) { }
#define BLKIO_WEIGHT_DEFAULT 500
#ifdef CONFIG_DEBUG_BLK_CGROUP
-void blkiocg_update_avg_queue_size_stats(struct blkio_group *blkg);
+void blkiocg_update_avg_queue_size_stats(struct blkio_group *blkg,
+ struct blkio_policy_type *pol);
void blkiocg_update_dequeue_stats(struct blkio_group *blkg,
- unsigned long dequeue);
-void blkiocg_update_set_idle_time_stats(struct blkio_group *blkg);
-void blkiocg_update_idle_time_stats(struct blkio_group *blkg);
-void blkiocg_set_start_empty_time(struct blkio_group *blkg);
+ struct blkio_policy_type *pol,
+ unsigned long dequeue);
+void blkiocg_update_set_idle_time_stats(struct blkio_group *blkg,
+ struct blkio_policy_type *pol);
+void blkiocg_update_idle_time_stats(struct blkio_group *blkg,
+ struct blkio_policy_type *pol);
+void blkiocg_set_start_empty_time(struct blkio_group *blkg,
+ struct blkio_policy_type *pol);
#define BLKG_FLAG_FNS(name) \
static inline void blkio_mark_blkg_##name( \
@@ -363,14 +368,16 @@ BLKG_FLAG_FNS(idling)
BLKG_FLAG_FNS(empty)
#undef BLKG_FLAG_FNS
#else
-static inline void blkiocg_update_avg_queue_size_stats(
- struct blkio_group *blkg) {}
+static inline void blkiocg_update_avg_queue_size_stats(struct blkio_group *blkg,
+ struct blkio_policy_type *pol) { }
static inline void blkiocg_update_dequeue_stats(struct blkio_group *blkg,
- unsigned long dequeue) {}
-static inline void blkiocg_update_set_idle_time_stats(struct blkio_group *blkg)
-{}
-static inline void blkiocg_update_idle_time_stats(struct blkio_group *blkg) {}
-static inline void blkiocg_set_start_empty_time(struct blkio_group *blkg) {}
+ struct blkio_policy_type *pol, unsigned long dequeue) { }
+static inline void blkiocg_update_set_idle_time_stats(struct blkio_group *blkg,
+ struct blkio_policy_type *pol) { }
+static inline void blkiocg_update_idle_time_stats(struct blkio_group *blkg,
+ struct blkio_policy_type *pol) { }
+static inline void blkiocg_set_start_empty_time(struct blkio_group *blkg,
+ struct blkio_policy_type *pol) { }
#endif
#ifdef CONFIG_BLK_CGROUP
@@ -386,18 +393,27 @@ struct blkio_group *blkg_lookup_create(struct blkio_cgroup *blkcg,
enum blkio_policy_id plid,
bool for_root);
void blkiocg_update_timeslice_used(struct blkio_group *blkg,
- unsigned long time,
- unsigned long unaccounted_time);
-void blkiocg_update_dispatch_stats(struct blkio_group *blkg, uint64_t bytes,
- bool direction, bool sync);
+ struct blkio_policy_type *pol,
+ unsigned long time,
+ unsigned long unaccounted_time);
+void blkiocg_update_dispatch_stats(struct blkio_group *blkg,
+ struct blkio_policy_type *pol,
+ uint64_t bytes, bool direction, bool sync);
void blkiocg_update_completion_stats(struct blkio_group *blkg,
- uint64_t start_time, uint64_t io_start_time, bool direction, bool sync);
-void blkiocg_update_io_merged_stats(struct blkio_group *blkg, bool direction,
- bool sync);
+ struct blkio_policy_type *pol,
+ uint64_t start_time,
+ uint64_t io_start_time, bool direction,
+ bool sync);
+void blkiocg_update_io_merged_stats(struct blkio_group *blkg,
+ struct blkio_policy_type *pol,
+ bool direction, bool sync);
void blkiocg_update_io_add_stats(struct blkio_group *blkg,
- struct blkio_group *curr_blkg, bool direction, bool sync);
+ struct blkio_policy_type *pol,
+ struct blkio_group *curr_blkg, bool direction,
+ bool sync);
void blkiocg_update_io_remove_stats(struct blkio_group *blkg,
- bool direction, bool sync);
+ struct blkio_policy_type *pol,
+ bool direction, bool sync);
#else
struct cgroup;
static inline struct blkio_cgroup *
@@ -411,19 +427,23 @@ blkiocg_del_blkio_group(struct blkio_group *blkg) { return 0; }
static inline struct blkio_group *blkg_lookup(struct blkio_cgroup *blkcg,
void *key) { return NULL; }
static inline void blkiocg_update_timeslice_used(struct blkio_group *blkg,
- unsigned long time,
- unsigned long unaccounted_time)
-{}
+ struct blkio_policy_type *pol, unsigned long time,
+ unsigned long unaccounted_time) { }
static inline void blkiocg_update_dispatch_stats(struct blkio_group *blkg,
- uint64_t bytes, bool direction, bool sync) {}
+ struct blkio_policy_type *pol, uint64_t bytes,
+ bool direction, bool sync) { }
static inline void blkiocg_update_completion_stats(struct blkio_group *blkg,
- uint64_t start_time, uint64_t io_start_time, bool direction,
- bool sync) {}
+ struct blkio_policy_type *pol, uint64_t start_time,
+ uint64_t io_start_time, bool direction, bool sync) { }
static inline void blkiocg_update_io_merged_stats(struct blkio_group *blkg,
- bool direction, bool sync) {}
+ struct blkio_policy_type *pol, bool direction,
+ bool sync) { }
static inline void blkiocg_update_io_add_stats(struct blkio_group *blkg,
- struct blkio_group *curr_blkg, bool direction, bool sync) {}
+ struct blkio_policy_type *pol,
+ struct blkio_group *curr_blkg, bool direction,
+ bool sync) { }
static inline void blkiocg_update_io_remove_stats(struct blkio_group *blkg,
- bool direction, bool sync) {}
+ struct blkio_policy_type *pol, bool direction,
+ bool sync) { }
#endif
#endif /* _BLK_CGROUP_H */
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