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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2009-06-26 16:28:00 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-06-26 16:47:00 +0200 |
| commit | 8cb76d99d715741637b6d0884f389e17e9cb05d2 (patch) | |
| tree | b4a66b3688390bc2571e4ddd0fa16a1cc0515c71 /tools/perf/perf.h | |
| parent | 3928ddbe994cce1da1b6365b0db04d5765f254f4 (diff) | |
| download | lwn-8cb76d99d715741637b6d0884f389e17e9cb05d2.tar.gz lwn-8cb76d99d715741637b6d0884f389e17e9cb05d2.zip | |
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.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/perf.h b/tools/perf/perf.h index 16c84fd73c86..a49842b69a59 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 |