diff options
author | mav <mav@FreeBSD.org> | 2018-02-01 19:13:19 +0000 |
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committer | mav <mav@FreeBSD.org> | 2018-02-01 19:13:19 +0000 |
commit | 482353f80736bd9e1d36aa824c1458fa0660c5f3 (patch) | |
tree | d3b9217eeb3dda795366a7f6531545521a0097fd | |
parent | 94bf160b70d468c1af238fb1ec973b1216a59def (diff) | |
download | FreeBSD-src-482353f80736bd9e1d36aa824c1458fa0660c5f3.zip FreeBSD-src-482353f80736bd9e1d36aa824c1458fa0660c5f3.tar.gz |
MFC r324632 (by imp):
Be nicer on the dump stack by allocating only a ccb_nvmeio rather than
a full ccb. This saves a few hundre bytes, which might be important
during a crash dump...
-rw-r--r-- | sys/cam/nvme/nvme_da.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/sys/cam/nvme/nvme_da.c b/sys/cam/nvme/nvme_da.c index 652f330..60f3cd6 100644 --- a/sys/cam/nvme/nvme_da.c +++ b/sys/cam/nvme/nvme_da.c @@ -379,7 +379,7 @@ ndadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t len struct cam_periph *periph; struct nda_softc *softc; u_int secsize; - union ccb ccb; + struct ccb_nvmeio nvmeio; struct disk *dp; uint64_t lba; uint32_t count; @@ -401,15 +401,15 @@ ndadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t len /* xpt_get_ccb returns a zero'd allocation for the ccb, mimic that here */ memset(&nvmeio, 0, sizeof(nvmeio)); if (length > 0) { - xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL); - ccb.ccb_h.ccb_state = NDA_CCB_DUMP; - nda_nvme_write(softc, &ccb.nvmeio, virtual, lba, length, count); - xpt_polled_action(&ccb); + xpt_setup_ccb(&nvmeio.ccb_h, periph->path, CAM_PRIORITY_NORMAL); + nvmeio.ccb_h.ccb_state = NDA_CCB_DUMP; + nda_nvme_write(softc, &nvmeio, virtual, lba, length, count); + xpt_polled_action((union ccb *)&nvmeio); - error = cam_periph_error(&ccb, + error = cam_periph_error((union ccb *)&nvmeio, 0, SF_NO_RECOVERY | SF_NO_RETRY, NULL); - if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0) - cam_release_devq(ccb.ccb_h.path, /*relsim_flags*/0, + if ((nvmeio.ccb_h.status & CAM_DEV_QFRZN) != 0) + cam_release_devq(nvmeio.ccb_h.path, /*relsim_flags*/0, /*reduction*/0, /*timeout*/0, /*getcount_only*/0); if (error != 0) printf("Aborting dump due to I/O error.\n"); @@ -419,16 +419,16 @@ ndadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t len } /* Flush */ - xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL); + xpt_setup_ccb(&nvmeio.ccb_h, periph->path, CAM_PRIORITY_NORMAL); - ccb.ccb_h.ccb_state = NDA_CCB_DUMP; - nda_nvme_flush(softc, &ccb.nvmeio); - xpt_polled_action(&ccb); + nvmeio.ccb_h.ccb_state = NDA_CCB_DUMP; + nda_nvme_flush(softc, &nvmeio); + xpt_polled_action((union ccb *)&nvmeio); - error = cam_periph_error(&ccb, + error = cam_periph_error((union ccb *)&nvmeio, 0, SF_NO_RECOVERY | SF_NO_RETRY, NULL); - if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0) - cam_release_devq(ccb.ccb_h.path, /*relsim_flags*/0, + if ((nvmeio.ccb_h.status & CAM_DEV_QFRZN) != 0) + cam_release_devq(nvmeio.ccb_h.path, /*relsim_flags*/0, /*reduction*/0, /*timeout*/0, /*getcount_only*/0); if (error != 0) xpt_print(periph->path, "flush cmd failed\n"); |