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scsi: scsi: Export blacklist flags to sysfs

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Each scsi device is scanned according to the found blacklist flags, but
this information is never presented to sysfs.  This makes it quite hard
to figure out if blacklisting worked as expected.  With this patch we're
exporting an additional attribute 'blacklist' containing the blacklist
flags for this device.

Signed-off-by: Hannes Reinecke <[email protected]>
Reviewed-by: Bart Van Assche <[email protected]>
Reviewed-by: Johannes Thumshirn <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
This commit is contained in:
Hannes Reinecke authored and Martin K. Petersen committed 2017-10-17 00:57:12 -04:00
1 parent e5203cf052
commit 345e29608b
3 files changed
+46
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drivers/scsi/Makefile
+8
View File
@@ -191,6 +191,14 @@ clean-files := 53c700_d.h 53c700_u.h
$(obj)/53c700.o $(MODVERDIR)/$(obj)/53c700.ver: $(obj)/53c700_d.h
$(obj)/scsi_sysfs.o: $(obj)/scsi_devinfo_tbl.c
quiet_cmd_bflags = GEN $@
cmd_bflags = sed -n 's/.*BLIST_\([A-Z0-9_]*\) *.*/BLIST_FLAG_NAME(\1),/p' $< > $@
$(obj)/scsi_devinfo_tbl.c: include/scsi/scsi_devinfo.h
$(call if_changed,bflags)
# If you want to play with the firmware, uncomment
# GENERATE_FIRMWARE := 1
drivers/scsi/scsi_scan.c
+1
View File
@@ -984,6 +984,7 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result,
scsi_attach_vpd(sdev);
sdev->max_queue_depth = sdev->queue_depth;
sdev->sdev_bflags = *bflags;
/*
* Ok, the device is now all set up, we can
drivers/scsi/scsi_sysfs.c
+37
View File
@@ -20,6 +20,7 @@
#include <scsi/scsi_dh.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_driver.h>
#include <scsi/scsi_devinfo.h>
#include "scsi_priv.h"
#include "scsi_logging.h"
@@ -966,6 +967,41 @@ sdev_show_wwid(struct device *dev, struct device_attribute *attr,
}
static DEVICE_ATTR(wwid, S_IRUGO, sdev_show_wwid, NULL);
#define BLIST_FLAG_NAME(name) [ilog2(BLIST_##name)] = #name
static const char *const sdev_bflags_name[] = {
#include "scsi_devinfo_tbl.c"
};
#undef BLIST_FLAG_NAME
static ssize_t
sdev_show_blacklist(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct scsi_device *sdev = to_scsi_device(dev);
int i;
ssize_t len = 0;
for (i = 0; i < sizeof(sdev->sdev_bflags) * BITS_PER_BYTE; i++) {
const char *name = NULL;
if (!(sdev->sdev_bflags & BIT(i)))
continue;
if (i < ARRAY_SIZE(sdev_bflags_name) && sdev_bflags_name[i])
name = sdev_bflags_name[i];
if (name)
len += snprintf(buf + len, PAGE_SIZE - len,
"%s%s", len ? " " : "", name);
else
len += snprintf(buf + len, PAGE_SIZE - len,
"%sINVALID_BIT(%d)", len ? " " : "", i);
}
if (len)
len += snprintf(buf + len, PAGE_SIZE - len, "\n");
return len;
}
static DEVICE_ATTR(blacklist, S_IRUGO, sdev_show_blacklist, NULL);
#ifdef CONFIG_SCSI_DH
static ssize_t
sdev_show_dh_state(struct device *dev, struct device_attribute *attr,
@@ -1151,6 +1187,7 @@ static struct attribute *scsi_sdev_attrs[] = {
&dev_attr_queue_depth.attr,
&dev_attr_queue_type.attr,
&dev_attr_wwid.attr,
&dev_attr_blacklist.attr,
#ifdef CONFIG_SCSI_DH
&dev_attr_dh_state.attr,
&dev_attr_access_state.attr,