[PATCH v4 1/9] scsi:scsi_debug: create scsi_debug directory in the debugfs filesystem

From: Wenchao Hao
Date: Tue Aug 15 2023 - 08:23:50 EST


Create directory scsi_debug in the root of the debugfs filesystem.
Prepare to add interface for manage error injection.

Signed-off-by: Wenchao Hao <haowenchao2@xxxxxxxxxx>
Acked-by: Douglas Gilbert <dgilbert@xxxxxxxxxxxx>
---
drivers/scsi/scsi_debug.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c
index 9c0af50501f9..35c336271b13 100644
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -41,6 +41,7 @@
#include <linux/random.h>
#include <linux/xarray.h>
#include <linux/prefetch.h>
+#include <linux/debugfs.h>

#include <net/checksum.h>

@@ -862,6 +863,8 @@ static const int device_qfull_result =

static const int condition_met_result = SAM_STAT_CONDITION_MET;

+static struct dentry *sdebug_debugfs_root;
+

/* Only do the extra work involved in logical block provisioning if one or
* more of the lbpu, lbpws or lbpws10 parameters are given and we are doing
@@ -7011,6 +7014,8 @@ static int __init scsi_debug_init(void)
goto driver_unreg;
}

+ sdebug_debugfs_root = debugfs_create_dir("scsi_debug", NULL);
+
for (k = 0; k < hosts_to_add; k++) {
if (want_store && k == 0) {
ret = sdebug_add_host_helper(idx);
@@ -7057,6 +7062,7 @@ static void __exit scsi_debug_exit(void)

sdebug_erase_all_stores(false);
xa_destroy(per_store_ap);
+ debugfs_remove(sdebug_debugfs_root);
}

device_initcall(scsi_debug_init);
--
2.35.3