diff options
| author | Rajan Shanmugavelu <rajan.shanmugavelu@oracle.com> | 2020-02-12 17:29:28 -0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-03-11 23:07:57 -0400 |
| commit | 598a90f2002c4c4daee24d76d24e8270c7075eef (patch) | |
| tree | f48493de9e67a1f11f70050223daede02684ba0d /drivers/scsi/qla2xxx/qla_dbg.c | |
| parent | 779dfcf6435b9ad612a630f0cae41adedbc0190b (diff) | |
scsi: qla2xxx: add ring buffer for tracing debug logs
Having this log in a ring buffer helps to diagnose qla2xxx driver and
firmware issues instead of having to reproduce the problem with
extended_logging enabled. This saves cycles and helps when it is hard
to reproduce problem.
Link: https://lore.kernel.org/r/1581557368-32080-1-git-send-email-rajan.shanmugavelu@oracle.com
Reviewed-by: Joe Jin <joe.jin@oracle.com>
Acked-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Rajan Shanmugavelu <rajan.shanmugavelu@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_dbg.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_dbg.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c index 88a56e8480f7..f301a8048b2f 100644 --- a/drivers/scsi/qla2xxx/qla_dbg.c +++ b/drivers/scsi/qla2xxx/qla_dbg.c @@ -73,6 +73,8 @@ #include "qla_def.h" #include <linux/delay.h> +#define CREATE_TRACE_POINTS +#include <trace/events/qla.h> static uint32_t ql_dbg_offset = 0x800; @@ -2537,15 +2539,30 @@ ql_dbg(uint level, scsi_qla_host_t *vha, uint id, const char *fmt, ...) { va_list va; struct va_format vaf; - - if (!ql_mask_match(level)) - return; + char pbuf[64]; va_start(va, fmt); vaf.fmt = fmt; vaf.va = &va; + if (!ql_mask_match(level)) { + if (vha != NULL) { + const struct pci_dev *pdev = vha->hw->pdev; + /* <module-name> <msg-id>:<host> Message */ + snprintf(pbuf, sizeof(pbuf), "%s [%s]-%04x:%ld: ", + QL_MSGHDR, dev_name(&(pdev->dev)), id, + vha->host_no); + } else { + snprintf(pbuf, sizeof(pbuf), "%s [%s]-%04x: : ", + QL_MSGHDR, "0000:00:00.0", id); + } + pbuf[sizeof(pbuf) - 1] = 0; + trace_ql_dbg_log(pbuf, &vaf); + va_end(va); + return; + } + if (vha != NULL) { const struct pci_dev *pdev = vha->hw->pdev; /* <module-name> <pci-name> <msg-id>:<host> Message */ |