Author: mav
Date: Thu Feb 1 19:01:06 2018
New Revision: 328699
URL: https://svnweb.freebsd.org/changeset/base/328699
Log:
MFC r324075 (by imp): Tweak performance of nda completions
Use xpt_done_direct in preference to xpt_done when completing a
successful I/O. Continue to use xpt_done when there's an error, or for
completion of the submission of a CCB. This eliminates a context
switch to the cam_doneq thread.
Modified:
stable/11/sys/dev/nvme/nvme_sim.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/dev/nvme/nvme_sim.c
==============================================================================
--- stable/11/sys/dev/nvme/nvme_sim.c Thu Feb 1 19:00:05 2018
(r328698)
+++ stable/11/sys/dev/nvme/nvme_sim.c Thu Feb 1 19:01:06 2018
(r328699)
@@ -73,11 +73,13 @@ nvme_sim_nvmeio_done(void *ccb_arg, const struct nvme_
* it means. Make our best guess, though for the status code.
*/
memcpy(&ccb->nvmeio.cpl, cpl, sizeof(*cpl));
- if (nvme_completion_is_error(cpl))
+ if (nvme_completion_is_error(cpl)) {
ccb->ccb_h.status = CAM_REQ_CMP_ERR;
- else
+ xpt_done(ccb);
+ } else {
ccb->ccb_h.status = CAM_REQ_CMP;
- xpt_done(ccb);
+ xpt_done_direct(ccb);
+ }
}
static void
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