- 17 Oct, 2021 40 commits
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-38-bvanassche@acm.orgSigned-off-by:
Bart Van Assche <bvanassche@acm.org> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-37-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-36-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-35-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Store the completion callback pointer in struct fas216_cmd_priv instead of in struct scsi_cmnd. This patch prepares for removal of the scsi_done member from struct scsi_cmnd. Link: https://lore.kernel.org/r/20211007202923.2174984-34-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Introduce a structure with driver-private data per SCSI command. This data structure will be used by the next patch to store a function pointer. Link: https://lore.kernel.org/r/20211007202923.2174984-33-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-32-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-31-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-30-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-29-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-28-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-27-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-26-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-25-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-24-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-23-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-22-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-21-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() and reset_done() directly. The changes in this patch are as follows: - Remove the 'done' argument from aha152x_internal_queue(). - Change ptr->scsi_done(ptr) into aha152x_scsi_done(ptr). - Inside aha152x_scsi_done(), check the 'resetting' flag of SCp.phase since aha152x_internal_queue() specifies the 'reset_done' function pointer if and only if the third argument has the value 'resetting'. Link: https://lore.kernel.org/r/20211007202923.2174984-20-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-19-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-18-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
The aacraid driver invokes scmd->scsi_done(scmd) for two types of SCSI commands: - SCSI commands initialized by the SCSI mid-layer. - SCSI commands initialized by aac_probe_container(). The processing sequence for SCSI commands allocated by aac_probe_container() is as follows: aac_probe_container() -> _aac_probe_container(scmd, aac_probe_container_callback1) -> scmd->SCp.ptr = aac_probe_container_callback1 -> aac_fib_send(..., _aac_probe_container1, scmd) -> fibptr->callback = _aac_probe_container1 -> fibptr->callback_data = scmd fibptr->callback(scmd) -> _aac_probe_container1(scmd, fibptr) [ ... ] -> _aac_probe_container2(scmd, fibptr) -> Call scmd->SCp.ptr == aac_probe_container_callback1 -> scmd->device = NULL; The processing sequence for SCSI commands allocated by the SCSI mid-layer if _aac_probe_container() is called is as follows: aac_queuecommand() -> aac_scsi_cmd() -> _aac_probe_container(scmd, aac_probe_container_callback2) -> scmd->SCp.ptr = aac_probe_container_callback2 -> aac_fib_send(..., _aac_probe_container1, scmd) fibptr->callback(scmd) -> _aac_probe_container1(scmd, fibptr) [ ... ] -> _aac_probe_container2(scmd, fibptr) -> Call scmd->SCp.ptr == aac_probe_container_callback2 Preserve the existing call sequences by calling scsi_done() for commands submitted by the mid-layer or aac_probe_container_scsi_done() for commands submitted by aac_probe_container(). Link: https://lore.kernel.org/r/20211007202923.2174984-17-bvanassche@acm.orgSigned-off-by: -
Bart Van Assche authored
This patch does not change any functionality but makes the next patch in this series easier to read. Link: https://lore.kernel.org/r/20211007202923.2174984-16-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-15-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-14-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-13-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-12-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-11-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-10-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-9-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-8-bvanassche@acm.orgAcked-by:
Benjamin Block <bblock@linux.ibm.com> Signed-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-7-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-6-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-5-bvanassche@acm.orgSigned-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Hence call scsi_done() directly. Link: https://lore.kernel.org/r/20211007202923.2174984-4-bvanassche@acm.orgAcked-by:
Damien Le Moal <damien.lemoal@opensource.wdc.com> Signed-off-by:
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Bart Van Assche authored
Since the removal of the legacy block layer there is only one completion function left in the SCSI core, namely scsi_mq_done(). Rename it into scsi_done(). Export that function to allow SCSI LLDs to call it directly. Link: https://lore.kernel.org/r/20211007202923.2174984-3-bvanassche@acm.orgReviewed-by:
Bean Huo <beanhuo@micron.com> Signed-off-by:
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Bart Van Assche authored
Conditional statements are faster than indirect calls. Use a structure member to track the SCSI command submitter such that later patches can call scsi_done(scmd) instead of scmd->scsi_done(scmd). The asymmetric behavior that scsi_send_eh_cmnd() sets the submission context to the SCSI error handler and that it does not restore the submission context to the SCSI core is retained. Link: https://lore.kernel.org/r/20211007202923.2174984-2-bvanassche@acm.org Cc: Hannes Reinecke <hare@suse.com> Cc: Ming Lei <ming.lei@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Reviewed-by:
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Bart Van Assche authored
The following query shows which drivers define callbacks that are called by the power management support code in the SCSI core (scsi_pm.c): $ git grep -nHEwA16 "$(echo $(git grep -h 'scsi_register_driver(&' | sed 's/.*&//;s/\..*//') | sed 's/ /|/g')" | grep '\.pm[[:blank:]]*=[[:blank:]]' drivers/scsi/sd.c-620- .pm = &sd_pm_ops, drivers/scsi/sr.c-100- .pm = &sr_pm_ops, drivers/scsi/ufs/ufshcd.c-9765- .pm = &ufshcd_wl_pm_ops, Since unconditionally runtime resuming a device during system resume is not necessary, remove that code. Modify the SCSI disk (sd) driver such that it follows the same approach as the UFS driver, namely to skip system suspend and resume for devices that are runtime suspended. The CD-ROM code does not need to be updated since its PM callbacks do not affect the device power state. This patch has been tested as follows: [ shell 1 ] cd /sys/kernel/debug/tracing grep -E 'blk_(pre|post)_runtime|runtime_(suspend|resume)|autosuspend_delay|pm_runtime_(get|put)' available_filter_functions | while read a b; do echo "$a"; done | grep -v __pm_runtime_resume >set_ftrace_filter echo function > current_tracer echo 1 > tracing_on cat trace_pipe [ shell 2 ] cd /sys/block/sr0 # Increase the event poll interval to make it easier to derive from the # tracing output whether runtime power actions are the result of sg_inq. echo 30000 > events_poll_msecs cd device/power # Enable runtime power management. echo auto > control echo 1000 > autosuspend_delay_ms sleep 1 # Verify in shell 1 that sr0 has been runtime suspended sg_inq /dev/sr0 eject /dev/sr0 sg_inq /dev/sr0 # Disable runtime power management. echo on > control cd /sys/block/sda/device/power echo auto > control echo 1000 > autosuspend_delay_ms sleep 1 # Verify in shell 1 that sr0 has been runtime suspended sg_inq /dev/sda Link: https://lore.kernel.org/r/20211006215453.3318929-4-bvanassche@acm.org Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Martin Kepplinger <martin.kepplinger@puri.sm> Tested-by:Martin Kepplinger <martin.kepplinger@puri.sm> Signed-off-by:
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Bart Van Assche authored
This patch does not change any functionality but makes the next patch in this series easier to read. Link: https://lore.kernel.org/r/20211006215453.3318929-3-bvanassche@acm.org Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Martin Kepplinger <martin.kepplinger@puri.sm> Signed-off-by:
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Bart Van Assche authored
Instead of implementing asynchronous resume support in the SCSI core, rely on the device driver core for resuming SCSI devices asynchronously. Instead of only supporting asynchronous resumes, also support asynchronous suspends. Link: https://lore.kernel.org/r/20211006215453.3318929-2-bvanassche@acm.org Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Martin Kepplinger <martin.kepplinger@puri.sm> Signed-off-by:
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