diff options
| -rw-r--r-- | block/bio.c | 28 | ||||
| -rw-r--r-- | include/linux/bio.h | 5 |
2 files changed, 33 insertions, 0 deletions
diff --git a/block/bio.c b/block/bio.c index 3e6e1986a5b2..3d4a072375ef 100644 --- a/block/bio.c +++ b/block/bio.c @@ -1739,6 +1739,34 @@ void bio_check_pages_dirty(struct bio *bio) } } +void generic_start_io_acct(int rw, unsigned long sectors, + struct hd_struct *part) +{ + int cpu = part_stat_lock(); + + part_round_stats(cpu, part); + part_stat_inc(cpu, part, ios[rw]); + part_stat_add(cpu, part, sectors[rw], sectors); + part_inc_in_flight(part, rw); + + part_stat_unlock(); +} +EXPORT_SYMBOL(generic_start_io_acct); + +void generic_end_io_acct(int rw, struct hd_struct *part, + unsigned long start_time) +{ + unsigned long duration = jiffies - start_time; + int cpu = part_stat_lock(); + + part_stat_add(cpu, part, ticks[rw], duration); + part_round_stats(cpu, part); + part_dec_in_flight(part, rw); + + part_stat_unlock(); +} +EXPORT_SYMBOL(generic_end_io_acct); + #if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE void bio_flush_dcache_pages(struct bio *bi) { diff --git a/include/linux/bio.h b/include/linux/bio.h index 7347f486ceca..efead0b532c4 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -443,6 +443,11 @@ extern struct bio *bio_copy_kern(struct request_queue *, void *, unsigned int, extern void bio_set_pages_dirty(struct bio *bio); extern void bio_check_pages_dirty(struct bio *bio); +void generic_start_io_acct(int rw, unsigned long sectors, + struct hd_struct *part); +void generic_end_io_acct(int rw, struct hd_struct *part, + unsigned long start_time); + #ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE # error "You should define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE for your platform" #endif |