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bdev: calculate tsc_diff in bdev_io_complete

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This will be required in following histogram patches.

Signed-off-by: Piotr Pelplinski <piotr.pelplinski@intel.com>
Change-Id: I2eee6629243b7a4838a80dc1de33ae485c58081e

Reviewed-on: https://review.gerrithub.io/433874
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Piotr Pelplinski 2018-11-19 14:52:23 +01:00 committed by Jim Harris
parent d2525134e7
commit 676717e4da
1 changed files with 4 additions and 3 deletions
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7
lib/bdev/bdev.c
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@ -3028,7 +3028,7 @@ static inline void
_spdk_bdev_io_complete(void *ctx)
{
struct spdk_bdev_io *bdev_io = ctx;
uint64_t tsc;
uint64_t tsc, tsc_diff;
if (spdk_unlikely(bdev_io->internal.in_submit_request || bdev_io->internal.io_submit_ch)) {
/*
@ -3050,6 +3050,7 @@ _spdk_bdev_io_complete(void *ctx)
}
tsc = spdk_get_ticks();
tsc_diff = tsc - bdev_io->internal.submit_tsc;
spdk_trace_record_tsc(tsc, TRACE_BDEV_IO_DONE, 0, 0, (uintptr_t)bdev_io, 0);
if (bdev_io->internal.status == SPDK_BDEV_IO_STATUS_SUCCESS) {
@ -3057,12 +3058,12 @@ _spdk_bdev_io_complete(void *ctx)
case SPDK_BDEV_IO_TYPE_READ:
bdev_io->internal.ch->stat.bytes_read += bdev_io->u.bdev.num_blocks * bdev_io->bdev->blocklen;
bdev_io->internal.ch->stat.num_read_ops++;
bdev_io->internal.ch->stat.read_latency_ticks += (tsc - bdev_io->internal.submit_tsc);
bdev_io->internal.ch->stat.read_latency_ticks += tsc_diff;
break;
case SPDK_BDEV_IO_TYPE_WRITE:
bdev_io->internal.ch->stat.bytes_written += bdev_io->u.bdev.num_blocks * bdev_io->bdev->blocklen;
bdev_io->internal.ch->stat.num_write_ops++;
bdev_io->internal.ch->stat.write_latency_ticks += (tsc - bdev_io->internal.submit_tsc);
bdev_io->internal.ch->stat.write_latency_ticks += tsc_diff;
break;
default:
break;