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authorFrederic Weisbecker <fweisbec@gmail.com>2009-06-26 16:28:00 +0200
committerIngo Molnar <mingo@elte.hu>2009-06-26 16:47:00 +0200
commit8cb76d99d715741637b6d0884f389e17e9cb05d2 (patch)
treeb4a66b3688390bc2571e4ddd0fa16a1cc0515c71 /tools/perf/perf.h
parent3928ddbe994cce1da1b6365b0db04d5765f254f4 (diff)
downloadop-kernel-dev-8cb76d99d715741637b6d0884f389e17e9cb05d2.zip
op-kernel-dev-8cb76d99d715741637b6d0884f389e17e9cb05d2.tar.gz
perf_counter tools: Prepare a small callchain framework
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>
Diffstat (limited to 'tools/perf/perf.h')
-rw-r--r--tools/perf/perf.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 16c84fd..a49842b 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -66,4 +66,9 @@ sys_perf_counter_open(struct perf_counter_attr *attr,
#define MAX_COUNTERS 256
#define MAX_NR_CPUS 256
+struct ip_callchain {
+ u64 nr;
+ u64 ips[0];
+};
+
#endif
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