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Commit 35feee19 authored by David Ahern's avatar David Ahern Committed by Arnaldo Carvalho de Melo
Browse files

perf machine: Add method to loop over threads and invoke handler 



Loop over all threads within a machine - including threads moved to the
dead threads list -- and invoked a function.

This allows commands to run some specific function on each thread (eg.,
dump statistics) yet hides how the threads are maintained within the
machine.

Signed-off-by: default avatarDavid Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1380395584-9025-2-git-send-email-dsahern@gmail.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 5e2485b1

tools/perf/util/machine.c

+23 −0
Original line number Diff line number Diff line
@@ -1393,3 +1393,26 @@ int machine__resolve_callchain(struct machine *machine, 
				   sample);



}



int machine__for_each_thread(struct machine *machine,

			     int (*fn)(struct thread *thread, void *p),

			     void *priv)

{

	struct rb_node *nd;

	struct thread *thread;

	int rc = 0;



	for (nd = rb_first(&machine->threads); nd; nd = rb_next(nd)) {

		thread = rb_entry(nd, struct thread, rb_node);

		rc = fn(thread, priv);

		if (rc != 0)

			return rc;

	}



	list_for_each_entry(thread, &machine->dead_threads, node) {

		rc = fn(thread, priv);

		if (rc != 0)

			return rc;

	}

	return rc;

}

tools/perf/util/machine.h

+4 −0
Original line number Diff line number Diff line
@@ -166,4 +166,8 @@ void machines__destroy_kernel_maps(struct machines *machines); 


size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp);



int machine__for_each_thread(struct machine *machine,

			     int (*fn)(struct thread *thread, void *p),

			     void *priv);



#endif /* __PERF_MACHINE_H */