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| author | Jerome Marchand <jmarchan@redhat.com> | 2008-02-08 11:04:56 +0100 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-02-08 12:42:00 +0100 |
| commit | 28f39d553ee242000e62f6c589ee3dc6de3f9aaa (patch) | |
| tree | c677fc2ec4a97c59e2e8eb3ba3080fce5a963784 /block/genhd.c | |
| parent | 34e8beac92c27d292938065f8375842d2840767c (diff) | |
| download | lwn-28f39d553ee242000e62f6c589ee3dc6de3f9aaa.tar.gz lwn-28f39d553ee242000e62f6c589ee3dc6de3f9aaa.zip | |
Enhanced partition statistics: procfs
Reports enhanced partition statistics in /proc/diskstats.
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Diffstat (limited to 'block/genhd.c')
| -rw-r--r-- | block/genhd.c | 28 |
1 files changed, 22 insertions, 6 deletions
diff --git a/block/genhd.c b/block/genhd.c index de2ebb2fab43..53f2238e69c8 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -584,12 +584,28 @@ static int diskstats_show(struct seq_file *s, void *v) for (n = 0; n < gp->minors - 1; n++) { struct hd_struct *hd = gp->part[n]; - if (hd && hd->nr_sects) - seq_printf(s, "%4d %4d %s %u %u %u %u\n", - gp->major, n + gp->first_minor + 1, - disk_name(gp, n + 1, buf), - hd->ios[0], hd->sectors[0], - hd->ios[1], hd->sectors[1]); + if (!hd || !hd->nr_sects) + continue; + + preempt_disable(); + part_round_stats(hd); + preempt_enable(); + seq_printf(s, "%4d %4d %s %lu %lu %llu " + "%u %lu %lu %llu %u %u %u %u\n", + gp->major, n + gp->first_minor + 1, + disk_name(gp, n + 1, buf), + part_stat_read(hd, ios[0]), + part_stat_read(hd, merges[0]), + (unsigned long long)part_stat_read(hd, sectors[0]), + jiffies_to_msecs(part_stat_read(hd, ticks[0])), + part_stat_read(hd, ios[1]), + part_stat_read(hd, merges[1]), + (unsigned long long)part_stat_read(hd, sectors[1]), + jiffies_to_msecs(part_stat_read(hd, ticks[1])), + hd->in_flight, + jiffies_to_msecs(part_stat_read(hd, io_ticks)), + jiffies_to_msecs(part_stat_read(hd, time_in_queue)) + ); } return 0; |