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| author | Baolin Wang <baolin.wang@linux.alibaba.com> | 2020-12-10 11:56:44 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-12-17 15:55:44 +0100 |
| commit | 76efc1c770968d6c786e5340029f8005ed29b2a5 (patch) | |
| tree | 42c3265976e755e721485bee0474ed8bb9971e7c /block/blk-iocost.c | |
| parent | nbd: Respect max_part for all partition scans (diff) | |
| download | linux-76efc1c770968d6c786e5340029f8005ed29b2a5.tar.xz linux-76efc1c770968d6c786e5340029f8005ed29b2a5.zip | |
blk-iocost: Add iocg idle state tracepoint
It will be helpful to trace the iocg's whole state, including active and
idle state. And we can easily expand the original iocost_iocg_activate
trace event to support a state trace class, including active and idle
state tracing.
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-iocost.c')
| -rw-r--r-- | block/blk-iocost.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/block/blk-iocost.c b/block/blk-iocost.c index ffa418c0dcb1..ac6078a34939 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -2185,6 +2185,9 @@ static int ioc_check_iocgs(struct ioc *ioc, struct ioc_now *now) WEIGHT_ONE); } + TRACE_IOCG_PATH(iocg_idle, iocg, now, + atomic64_read(&iocg->active_period), + atomic64_read(&ioc->cur_period), vtime); __propagate_weights(iocg, 0, 0, false, now); list_del_init(&iocg->active_list); } |