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| author | Andrew Boyer <andrew.boyer@dell.com> | 2016-11-23 20:39:22 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-12-13 00:31:45 +0300 |
| commit | accacb8f51c299965939ac56926d1c718e2691a1 (patch) | |
| tree | 86e7ef63e3dfb70f5702c33a48ef721b7deb1e2a /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | d4fb59256ac03d84f68e36c430b58d6fc76dd651 (diff) | |
| download | linux-accacb8f51c299965939ac56926d1c718e2691a1.tar.xz | |
IB/rxe: Add support for IB_CQ_REPORT_MISSED_EVENTS
Peek at the CQ after arming it so that we can return a hint.
This avoids missed completions due to a race between posting
CQEs and arming the CQ.
For example, CM teardown waits on MAD requests to complete with
ib_cq_poll_work(). Without this fix, the last completion might be
left on the CQ, hanging the kthread doing the teardown.
The console backtraces look like this:
[ 4199.911284] Call Trace:
[ 4199.911401] [<ffffffff9657fe95>] schedule+0x35/0x80
[ 4199.911556] [<ffffffff965830df>] schedule_timeout+0x22f/0x2c0
[ 4199.911727] [<ffffffff9657f7a8>] ? __schedule+0x368/0xa20
[ 4199.911891] [<ffffffff96580903>] wait_for_completion+0xb3/0x130
[ 4199.912067] [<ffffffff960a17e0>] ? wake_up_q+0x70/0x70
[ 4199.912243] [<ffffffffc074a06d>] cm_destroy_id+0x13d/0x450 [ib_cm]
[ 4199.912422] [<ffffffff961615d5>] ? printk+0x57/0x73
[ 4199.912578] [<ffffffffc074a390>] ib_destroy_cm_id+0x10/0x20 [ib_cm]
[ 4199.912759] [<ffffffffc076098c>] rdma_destroy_id+0xac/0x340 [rdma_cm]
[ 4199.912941] [<ffffffffc076f2cc>] 0xffffffffc076f2cc
Signed-off-by: Andrew Boyer <andrew.boyer@dell.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions