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perf_counter tools: Prepare a small callchain framework

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We plan to display the callchains depending on some user-configurable
parameters.

To gather the callchains stats from the recorded stream in a fast way,
this patch introduces an ad hoc radix tree adapted for callchains and also
a rbtree to sort these callchains once we have gathered every events
from the stream.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1246026481-8314-2-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Frederic Weisbecker
2009-06-26 16:28:00 +02:00
committed by Ingo Molnar
parent 3928ddbe99
commit 8cb76d99d7
5 changed files with 213 additions and 5 deletions
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5
tools/perf/builtin-report.c
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@ -62,11 +62,6 @@ struct ip_event {
unsigned char __more_data[];
};
struct ip_callchain {
u64 nr;
u64 ips[0];
};
struct mmap_event {
struct perf_event_header header;
u32 pid, tid;