forked from Minki/linux
perf machine: Add threads__set_last_match function
Separating threads::last_match cache set into separate threads__set_last_match function. This will be useful in following patch. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Lukasz Odzioba <lukasz.odzioba@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/20180719143345.12963-3-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -431,6 +431,12 @@ threads__get_last_match(struct threads *threads, struct machine *machine,
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return NULL;
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}
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static void
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threads__set_last_match(struct threads *threads, struct thread *th)
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{
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threads->last_match = th;
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}
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/*
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* Caller must eventually drop thread->refcnt returned with a successful
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* lookup/new thread inserted.
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@ -453,7 +459,7 @@ static struct thread *____machine__findnew_thread(struct machine *machine,
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th = rb_entry(parent, struct thread, rb_node);
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if (th->tid == tid) {
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threads->last_match = th;
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threads__set_last_match(threads, th);
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machine__update_thread_pid(machine, th, pid);
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return thread__get(th);
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}
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@ -490,7 +496,7 @@ static struct thread *____machine__findnew_thread(struct machine *machine,
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* It is now in the rbtree, get a ref
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*/
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thread__get(th);
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threads->last_match = th;
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threads__set_last_match(threads, th);
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++threads->nr;
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}
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@ -1648,7 +1654,7 @@ static void __machine__remove_thread(struct machine *machine, struct thread *th,
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struct threads *threads = machine__threads(machine, th->tid);
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if (threads->last_match == th)
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threads->last_match = NULL;
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threads__set_last_match(threads, NULL);
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BUG_ON(refcount_read(&th->refcnt) == 0);
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if (lock)
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