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authorChristoph Hellwig <hch@lst.de>2020-03-24 08:25:13 +0100
committerJens Axboe <axboe@kernel.dk>2020-03-24 07:57:07 -0600
commit3ad5cee5cd000dc05e6c2410b06fc1d818e7b1e9 (patch)
tree9c23b9cb8c1538219ad6656abbef12ce26f307ea /block/genhd.c
parent5cbd28e3cef14b43b2a8271d36b75fc61c13bb8a (diff)
downloadlinux-3ad5cee5cd000dc05e6c2410b06fc1d818e7b1e9.tar.bz2
block: move sysfs methods shared by disks and partitions to genhd.c
Move the sysfs _show methods that are used both on the full disk and partition nodes to genhd.c instead of hiding them in the partitioning code. Also move the declaration for these methods to block/blk.h so that we don't expose them to drivers. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/genhd.c')
-rw-r--r--block/genhd.c80
1 files changed, 79 insertions, 1 deletions
diff --git a/block/genhd.c b/block/genhd.c
index 2484348d1850..f7d60b620b97 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -4,6 +4,7 @@
*/
#include <linux/module.h>
+#include <linux/ctype.h>
#include <linux/fs.h>
#include <linux/genhd.h>
#include <linux/kdev_t.h>
@@ -1199,6 +1200,60 @@ static ssize_t disk_ro_show(struct device *dev,
return sprintf(buf, "%d\n", get_disk_ro(disk) ? 1 : 0);
}
+ssize_t part_size_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct hd_struct *p = dev_to_part(dev);
+
+ return sprintf(buf, "%llu\n",
+ (unsigned long long)part_nr_sects_read(p));
+}
+
+ssize_t part_stat_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct hd_struct *p = dev_to_part(dev);
+ struct request_queue *q = part_to_disk(p)->queue;
+ unsigned int inflight;
+
+ inflight = part_in_flight(q, p);
+ return sprintf(buf,
+ "%8lu %8lu %8llu %8u "
+ "%8lu %8lu %8llu %8u "
+ "%8u %8u %8u "
+ "%8lu %8lu %8llu %8u "
+ "%8lu %8u"
+ "\n",
+ part_stat_read(p, ios[STAT_READ]),
+ part_stat_read(p, merges[STAT_READ]),
+ (unsigned long long)part_stat_read(p, sectors[STAT_READ]),
+ (unsigned int)part_stat_read_msecs(p, STAT_READ),
+ part_stat_read(p, ios[STAT_WRITE]),
+ part_stat_read(p, merges[STAT_WRITE]),
+ (unsigned long long)part_stat_read(p, sectors[STAT_WRITE]),
+ (unsigned int)part_stat_read_msecs(p, STAT_WRITE),
+ inflight,
+ jiffies_to_msecs(part_stat_read(p, io_ticks)),
+ jiffies_to_msecs(part_stat_read(p, time_in_queue)),
+ part_stat_read(p, ios[STAT_DISCARD]),
+ part_stat_read(p, merges[STAT_DISCARD]),
+ (unsigned long long)part_stat_read(p, sectors[STAT_DISCARD]),
+ (unsigned int)part_stat_read_msecs(p, STAT_DISCARD),
+ part_stat_read(p, ios[STAT_FLUSH]),
+ (unsigned int)part_stat_read_msecs(p, STAT_FLUSH));
+}
+
+ssize_t part_inflight_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct hd_struct *p = dev_to_part(dev);
+ struct request_queue *q = part_to_disk(p)->queue;
+ unsigned int inflight[2];
+
+ part_in_flight_rw(q, p, inflight);
+ return sprintf(buf, "%8u %8u\n", inflight[0], inflight[1]);
+}
+
static ssize_t disk_capability_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -1237,10 +1292,33 @@ static DEVICE_ATTR(capability, 0444, disk_capability_show, NULL);
static DEVICE_ATTR(stat, 0444, part_stat_show, NULL);
static DEVICE_ATTR(inflight, 0444, part_inflight_show, NULL);
static DEVICE_ATTR(badblocks, 0644, disk_badblocks_show, disk_badblocks_store);
+
#ifdef CONFIG_FAIL_MAKE_REQUEST
+ssize_t part_fail_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct hd_struct *p = dev_to_part(dev);
+
+ return sprintf(buf, "%d\n", p->make_it_fail);
+}
+
+ssize_t part_fail_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct hd_struct *p = dev_to_part(dev);
+ int i;
+
+ if (count > 0 && sscanf(buf, "%d", &i) > 0)
+ p->make_it_fail = (i == 0) ? 0 : 1;
+
+ return count;
+}
+
static struct device_attribute dev_attr_fail =
__ATTR(make-it-fail, 0644, part_fail_show, part_fail_store);
-#endif
+#endif /* CONFIG_FAIL_MAKE_REQUEST */
+
#ifdef CONFIG_FAIL_IO_TIMEOUT
static struct device_attribute dev_attr_fail_timeout =
__ATTR(io-timeout-fail, 0644, part_timeout_show, part_timeout_store);