mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-13 14:14:37 +00:00
b6cacaf204
People testing have a need to know how many errors might be occurring over time. Add error counters and expose them via debugfs. A module initcall is used to create a debugfs root directory for ufshcd-related items. In the case that modules are built-in, then initialization is done in link order, so move ufshcd-core to the top of the Makefile. Link: https://lore.kernel.org/r/20210107072538.21782-1-adrian.hunter@intel.com Reviewed-by: Avri Altman <avri.altman@wdc.com> Reviewed-by: Bean Huo <beanhuo@micron.com> Reviewed-by: Can Guo <cang@codeaurora.org> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
// Copyright (C) 2020 Intel Corporation
|
|
|
|
#include <linux/debugfs.h>
|
|
|
|
#include "ufs-debugfs.h"
|
|
#include "ufshcd.h"
|
|
|
|
static struct dentry *ufs_debugfs_root;
|
|
|
|
void __init ufs_debugfs_init(void)
|
|
{
|
|
ufs_debugfs_root = debugfs_create_dir("ufshcd", NULL);
|
|
}
|
|
|
|
void __exit ufs_debugfs_exit(void)
|
|
{
|
|
debugfs_remove_recursive(ufs_debugfs_root);
|
|
}
|
|
|
|
static int ufs_debugfs_stats_show(struct seq_file *s, void *data)
|
|
{
|
|
struct ufs_hba *hba = s->private;
|
|
struct ufs_event_hist *e = hba->ufs_stats.event;
|
|
|
|
#define PRT(fmt, typ) \
|
|
seq_printf(s, fmt, e[UFS_EVT_ ## typ].cnt)
|
|
|
|
PRT("PHY Adapter Layer errors (except LINERESET): %llu\n", PA_ERR);
|
|
PRT("Data Link Layer errors: %llu\n", DL_ERR);
|
|
PRT("Network Layer errors: %llu\n", NL_ERR);
|
|
PRT("Transport Layer errors: %llu\n", TL_ERR);
|
|
PRT("Generic DME errors: %llu\n", DME_ERR);
|
|
PRT("Auto-hibernate errors: %llu\n", AUTO_HIBERN8_ERR);
|
|
PRT("IS Fatal errors (CEFES, SBFES, HCFES, DFES): %llu\n", FATAL_ERR);
|
|
PRT("DME Link Startup errors: %llu\n", LINK_STARTUP_FAIL);
|
|
PRT("PM Resume errors: %llu\n", RESUME_ERR);
|
|
PRT("PM Suspend errors : %llu\n", SUSPEND_ERR);
|
|
PRT("Logical Unit Resets: %llu\n", DEV_RESET);
|
|
PRT("Host Resets: %llu\n", HOST_RESET);
|
|
PRT("SCSI command aborts: %llu\n", ABORT);
|
|
#undef PRT
|
|
return 0;
|
|
}
|
|
DEFINE_SHOW_ATTRIBUTE(ufs_debugfs_stats);
|
|
|
|
void ufs_debugfs_hba_init(struct ufs_hba *hba)
|
|
{
|
|
hba->debugfs_root = debugfs_create_dir(dev_name(hba->dev), ufs_debugfs_root);
|
|
debugfs_create_file("stats", 0400, hba->debugfs_root, hba, &ufs_debugfs_stats_fops);
|
|
}
|
|
|
|
void ufs_debugfs_hba_exit(struct ufs_hba *hba)
|
|
{
|
|
debugfs_remove_recursive(hba->debugfs_root);
|
|
}
|