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SubjectRe: [PATCH] perf lock: fix sorting by wait_min
Em Mon, Mar 14, 2011 at 05:54:58PM +0100, Marcin Slusarz escreveu:
> On Tue, Feb 22, 2011 at 06:47:15PM +0100, Marcin Slusarz wrote:
> > if lock was uncontended, wait_time_min == ULLONG_MAX, so we need to handle
> > this case differently to show high wait times first
> >
> > Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
> > ---
> > tools/perf/builtin-lock.c | 13 ++++++++++++-
> > 1 files changed, 12 insertions(+), 1 deletions(-)
> >
> > diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c
> > index 0305a40..812ad26 100644
> > --- a/tools/perf/builtin-lock.c
> > +++ b/tools/perf/builtin-lock.c
> > @@ -202,9 +202,20 @@ static struct thread_stat *thread_stat_findnew_first(u32 tid)
> > SINGLE_KEY(nr_acquired)
> > SINGLE_KEY(nr_contended)
> > SINGLE_KEY(wait_time_total)
> > -SINGLE_KEY(wait_time_min)
> > SINGLE_KEY(wait_time_max)
> >
> > +static int lock_stat_key_wait_time_min(struct lock_stat *one,
> > + struct lock_stat *two)
> > +{
> > + u64 s1 = one->wait_time_min;
> > + u64 s2 = two->wait_time_min;
> > + if (s1 == ULLONG_MAX)
> > + s1 = 0;
> > + if (s2 == ULLONG_MAX)
> > + s2 = 0;
> > + return s1 > s2;
> > +}
> > +
> > struct lock_key {
> > /*
> > * name: the value for specify by user
> > --
>
> Anything wrong with this patch?
> I can't find it in linux-next.

Hitoshi-san, can I have your acked-by for this one?

Thanks,

- Arnaldo


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