From 139633c6a43781cd44798165b0472a34bf53a1e8 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Sun, 9 May 2010 11:47:13 -0300 Subject: perf callchain: Move validate_callchain to callchain lib MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Frédéric Weisbecker Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Tom Zanussi LKML-Reference: Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/callchain.c | 7 +++++++ tools/perf/util/callchain.h | 3 +++ 2 files changed, 10 insertions(+) (limited to 'tools/perf/util') 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 #include +#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 */ -- cgit v1.2.2