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authorArnaldo Carvalho de Melo <acme@redhat.com>2010-05-09 11:47:13 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2010-05-09 13:07:05 -0300
commit139633c6a43781cd44798165b0472a34bf53a1e8 (patch)
tree17c2412ccb2993846488153e8dcc2c7015d260d1 /tools/perf/util
parente157eb8341e7885ff2d9f1620155e3da6e0c8f56 (diff)
perf callchain: Move validate_callchain to callchain lib
Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
-rw-r--r--tools/perf/util/callchain.c7
-rw-r--r--tools/perf/util/callchain.h3
2 files changed, 10 insertions, 0 deletions
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index db628af6d20d..ac148613afe8 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -17,6 +17,13 @@
#include "callchain.h"
+bool ip_callchain__valid(struct ip_callchain *chain, event_t *event)
+{
+ unsigned int chain_size = event->header.size;
+ chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
+ return chain->nr * sizeof(u64) <= chain_size;
+}
+
#define chain_for_each_child(child, parent) \
list_for_each_entry(child, &parent->children, brothers)
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index 8a7e8bbd0fda..0f4da093cbd8 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -4,6 +4,7 @@
#include "../perf.h"
#include <linux/list.h>
#include <linux/rbtree.h>
+#include "event.h"
#include "util.h"
#include "symbol.h"
@@ -58,4 +59,6 @@ static inline u64 cumul_hits(struct callchain_node *node)
int register_callchain_param(struct callchain_param *param);
int append_chain(struct callchain_node *root, struct ip_callchain *chain,
struct map_symbol *syms);
+
+bool ip_callchain__valid(struct ip_callchain *chain, event_t *event);
#endif /* __PERF_CALLCHAIN_H */