Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
Enhanced partition statistics: procfs
Reports enhanced partition statistics in /proc/diskstats.
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
authored by Jerome Marchand and committed by Jens Axboe 28f39d55 34e8beac
+22
-6
block/genhd.c
+22
-6
block/genhd.c
···
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for (n = 0; n < gp->minors - 1; n++) {
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struct hd_struct *hd = gp->part[n];
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-
if (hd && hd->nr_sects)
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seq_printf(s, "%4d %4d %s %u %u %u %u\n",
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gp->major, n + gp->first_minor + 1,
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disk_name(gp, n + 1, buf),
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hd->ios[0], hd->sectors[0],
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hd->ios[1], hd->sectors[1]);
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if (!hd || !hd->nr_sects)
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continue;
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preempt_disable();
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part_round_stats(hd);
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preempt_enable();
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seq_printf(s, "%4d %4d %s %lu %lu %llu "
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"%u %lu %lu %llu %u %u %u %u\n",
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gp->major, n + gp->first_minor + 1,
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disk_name(gp, n + 1, buf),
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part_stat_read(hd, ios[0]),
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part_stat_read(hd, merges[0]),
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(unsigned long long)part_stat_read(hd, sectors[0]),
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jiffies_to_msecs(part_stat_read(hd, ticks[0])),
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part_stat_read(hd, ios[1]),
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part_stat_read(hd, merges[1]),
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(unsigned long long)part_stat_read(hd, sectors[1]),
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jiffies_to_msecs(part_stat_read(hd, ticks[1])),
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hd->in_flight,
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jiffies_to_msecs(part_stat_read(hd, io_ticks)),
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jiffies_to_msecs(part_stat_read(hd, time_in_queue))
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);
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}
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return 0;