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    SubjectRe: [PATCH v6 1/2] Track hard and soft "short lockups" or "stalls."
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    On Wed, 2011-08-10 at 11:02 -0700, Alex Neronskiy wrote:
    > @@ -767,7 +767,23 @@ static struct ctl_table kern_table[] = {
    > .extra1 = &zero,
    > .extra2 = &one,
    > },
    > -#endif
    > + {
    > + .procname = "softstall_worst",
    > + .data = &worst_softstall,
    > + .maxlen = sizeof(unsigned long),
    > + .mode = 0644,
    > + .proc_handler = proc_doulongvec_minmax,
    > + },
    > +#ifdef CONFIG_HARDLOCKUP_DETECTOR
    > + {
    > + .procname = "hardstall_worst",
    > + .data = &worst_hardstall,
    > + .maxlen = sizeof(unsigned long),
    > + .mode = 0644,
    > + .proc_handler = proc_doulongvec_minmax,
    > + },
    > +#endif /* CONFIG_HARDLOCKUP_DETECTOR */
    > +#endif /* CONFIG_LOCKUP_DETECTOR */

    And patch 2 does:


    > +++ b/kernel/sysctl.c
    > @@ -767,22 +767,6 @@ static struct ctl_table kern_table[] = {
    > .extra1 = &zero,
    > .extra2 = &one,
    > },
    > - {
    > - .procname = "softstall_worst",
    > - .data = &worst_softstall,
    > - .maxlen = sizeof(unsigned long),
    > - .mode = 0644,
    > - .proc_handler = proc_doulongvec_minmax,
    > - },
    > -#ifdef CONFIG_HARDLOCKUP_DETECTOR
    > - {
    > - .procname = "hardstall_worst",
    > - .data = &worst_hardstall,
    > - .maxlen = sizeof(unsigned long),
    > - .mode = 0644,
    > - .proc_handler = proc_doulongvec_minmax,
    > - },
    > -#endif /* CONFIG_HARDLOCKUP_DETECTOR */
    > #endif /* CONFIG_LOCKUP_DETECTOR */
    >

    Makes one wonder wtf patch 1 exists for..


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