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perf lock: Fix sorting by wait_min
If lock was uncontended, wait_time_min == ULLONG_MAX, so we need to handle this case differently to show high wait times first Acked-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20110222174715.GC9687@joi.lan> Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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1 changed files with 12 additions and 1 deletions
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@ -202,9 +202,20 @@ static struct thread_stat *thread_stat_findnew_first(u32 tid)
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SINGLE_KEY(nr_acquired)
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SINGLE_KEY(nr_acquired)
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SINGLE_KEY(nr_contended)
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SINGLE_KEY(nr_contended)
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SINGLE_KEY(wait_time_total)
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SINGLE_KEY(wait_time_total)
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SINGLE_KEY(wait_time_min)
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SINGLE_KEY(wait_time_max)
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SINGLE_KEY(wait_time_max)
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static int lock_stat_key_wait_time_min(struct lock_stat *one,
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struct lock_stat *two)
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{
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u64 s1 = one->wait_time_min;
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u64 s2 = two->wait_time_min;
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if (s1 == ULLONG_MAX)
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s1 = 0;
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if (s2 == ULLONG_MAX)
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s2 = 0;
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return s1 > s2;
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}
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struct lock_key {
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struct lock_key {
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/*
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/*
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* name: the value for specify by user
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* name: the value for specify by user
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