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| author | Peter Oberparleiter <oberpar@linux.ibm.com> | 2024-04-10 11:46:20 +0200 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2024-04-12 16:13:03 +0200 |
| commit | 6f76592ef63a1ffd8949f0828d24da7913ddb6d8 (patch) | |
| tree | 710d3932271a56949ac7f20dece75c55edf3d3b4 | |
| parent | 2d8527f2f911fab84aec04df4788c0c23af3df48 (diff) | |
| download | linux-6f76592ef63a1ffd8949f0828d24da7913ddb6d8.tar.gz | |
s390/cio: log fake IRB events
Add traces when queueing and delivering fake IRBs. These are significant
events that might have an impact on device driver processing and are
therefore relevant for problem analysis.
Reviewed-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
| -rw-r--r-- | drivers/s390/cio/device_fsm.c | 5 | ||||
| -rw-r--r-- | drivers/s390/cio/device_ops.c | 8 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c index 65d8b2cfd6262d..42791fa0b80e26 100644 --- a/drivers/s390/cio/device_fsm.c +++ b/drivers/s390/cio/device_fsm.c @@ -504,6 +504,11 @@ callback: ccw_device_done(cdev, DEV_STATE_ONLINE); /* Deliver fake irb to device driver, if needed. */ if (cdev->private->flags.fake_irb) { + CIO_MSG_EVENT(2, "fakeirb: deliver device 0.%x.%04x intparm %lx type=%d\n", + cdev->private->dev_id.ssid, + cdev->private->dev_id.devno, + cdev->private->intparm, + cdev->private->flags.fake_irb); create_fake_irb(&cdev->private->dma_area->irb, cdev->private->flags.fake_irb); cdev->private->flags.fake_irb = 0; diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c index 40c97f8730751f..acd6790dba4dd1 100644 --- a/drivers/s390/cio/device_ops.c +++ b/drivers/s390/cio/device_ops.c @@ -208,6 +208,10 @@ int ccw_device_start_timeout_key(struct ccw_device *cdev, struct ccw1 *cpa, if (!cdev->private->flags.fake_irb) { cdev->private->flags.fake_irb = FAKE_CMD_IRB; cdev->private->intparm = intparm; + CIO_MSG_EVENT(2, "fakeirb: queue device 0.%x.%04x intparm %lx type=%d\n", + cdev->private->dev_id.ssid, + cdev->private->dev_id.devno, intparm, + cdev->private->flags.fake_irb); return 0; } else /* There's already a fake I/O around. */ @@ -551,6 +555,10 @@ int ccw_device_tm_start_timeout_key(struct ccw_device *cdev, struct tcw *tcw, if (!cdev->private->flags.fake_irb) { cdev->private->flags.fake_irb = FAKE_TM_IRB; cdev->private->intparm = intparm; + CIO_MSG_EVENT(2, "fakeirb: queue device 0.%x.%04x intparm %lx type=%d\n", + cdev->private->dev_id.ssid, + cdev->private->dev_id.devno, intparm, + cdev->private->flags.fake_irb); return 0; } else /* There's already a fake I/O around. */ |