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| author | Suganath Prabu <suganath-prabu.subramani@broadcom.com> | 2020-04-28 02:45:22 -0400 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-05-07 22:24:27 -0400 |
| commit | 2b01b293f359ddd67e08bbe8def42a7082310b82 (patch) | |
| tree | edb5eeefa61090ab226e3c65859157949e81b37e /drivers/scsi/mpt3sas/mpt3sas_scsih.c | |
| parent | 55d4ce458c77f21fd20711f23ab8540e904d10c3 (diff) | |
| download | linux-2b01b293f359ddd67e08bbe8def42a7082310b82.tar.bz2 | |
scsi: mpt3sas: Capture IOC data for debugging purposes
Information needed to debug driver problems and firmware faults is stored
in the IOC’s MPT3SAS_ADAPTER data structure. Parameters such as IOCFacts,
IOC flags (related to sge, MSI-X, error recovery etc.), performance mode
type, TMs, internal commands reply status, etc. are present.
For debugging purposes, it is therefore helpful to be able to capture this
information so that the fault can be analyzed. Export the MPT3SAS_ADAPTER
data structure in debugfs. The data is available in:
/sys/kernel/debug/mpt3sas/scsi_hostX/ioc_dump
Link: https://lore.kernel.org/r/1588056322-29227-1-git-send-email-suganath-prabu.subramani@broadcom.com
Signed-off-by: Suganath Prabu <suganath-prabu.subramani@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/mpt3sas/mpt3sas_scsih.c')
| -rw-r--r-- | drivers/scsi/mpt3sas/mpt3sas_scsih.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index 04a40afe60e3..6b84a83f1720 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -9928,6 +9928,7 @@ static void scsih_remove(struct pci_dev *pdev) &ioc->ioc_pg1_copy); /* release all the volumes */ _scsih_ir_shutdown(ioc); + mpt3sas_destroy_debugfs(ioc); sas_remove_host(shost); list_for_each_entry_safe(raid_device, next, &ioc->raid_device_list, list) { @@ -10814,6 +10815,7 @@ _scsih_probe(struct pci_dev *pdev, const struct pci_device_id *id) } scsi_scan_host(shost); + mpt3sas_setup_debugfs(ioc); return 0; out_add_shost_fail: mpt3sas_base_detach(ioc); @@ -11220,6 +11222,7 @@ scsih_init(void) tm_sas_control_cb_idx = mpt3sas_base_register_callback_handler( _scsih_sas_control_complete); + mpt3sas_init_debugfs(); return 0; } @@ -11251,6 +11254,7 @@ scsih_exit(void) if (hbas_to_enumerate != 2) raid_class_release(mpt2sas_raid_template); sas_release_transport(mpt3sas_transport_template); + mpt3sas_exit_debugfs(); } /** |