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authorFrederic Weisbecker <fweisbec@gmail.com>2009-07-01 05:35:14 +0200
committerIngo Molnar <mingo@elte.hu>2009-07-01 09:58:26 +0200
commit4424961ad6621a02c6b4c9093e801002c1bb9f65 (patch)
tree9851ec33de4b89fee395941af8fbbaab60ab2028 /tools/perf/util/callchain.c
parent9198aa77b69647d1d91207f8075763abe7dc0bf4 (diff)
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perf_counter tools: Resolve symbols in callchains
This patch resolves the names, when possible, of each ip present in the callchains while using the -c option with perf report. Example: 5.40% [k] __d_lookup 5.37% perf_callchain perf_counter_overflow intel_pmu_handle_irq perf_counter_nmi_handler notifier_call_chain atomic_notifier_call_chain notify_die do_nmi nmi do_lookup __link_path_walk path_walk do_path_lookup user_path_at sys_faccessat sys_access system_call_fastpath 0x7fb609846f77 0.01% perf_callchain perf_counter_overflow intel_pmu_handle_irq perf_counter_nmi_handler notifier_call_chain atomic_notifier_call_chain notify_die do_nmi nmi do_lookup __link_path_walk path_walk do_path_lookup user_path_at sys_faccessat 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> Cc: Anton Blanchard <anton@samba.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1246419315-9968-3-git-send-email-fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/util/callchain.c')
-rw-r--r--tools/perf/util/callchain.c33
1 files changed, 19 insertions, 14 deletions
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index bbf7813fefe..6568cb198ba 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -67,7 +67,8 @@ static struct callchain_node *create_child(struct callchain_node *parent)
}
static void
-fill_node(struct callchain_node *node, struct ip_callchain *chain, int start)
+fill_node(struct callchain_node *node, struct ip_callchain *chain, int start,
+ struct symbol **syms)
{
int i;
@@ -80,24 +81,26 @@ fill_node(struct callchain_node *node, struct ip_callchain *chain, int start)
return;
}
call->ip = chain->ips[i];
+ call->sym = syms[i];
list_add_tail(&call->list, &node->val);
}
node->val_nr = i - start;
}
-static void add_child(struct callchain_node *parent, struct ip_callchain *chain)
+static void add_child(struct callchain_node *parent, struct ip_callchain *chain,
+ struct symbol **syms)
{
struct callchain_node *new;
new = create_child(parent);
- fill_node(new, chain, parent->val_nr);
+ fill_node(new, chain, parent->val_nr, syms);
new->hit = 1;
}
static void
split_add_child(struct callchain_node *parent, struct ip_callchain *chain,
- struct callchain_list *to_split, int idx)
+ struct callchain_list *to_split, int idx, struct symbol **syms)
{
struct callchain_node *new;
@@ -109,21 +112,22 @@ split_add_child(struct callchain_node *parent, struct ip_callchain *chain,
parent->val_nr = idx;
/* create the new one */
- add_child(parent, chain);
+ add_child(parent, chain, syms);
}
static int
__append_chain(struct callchain_node *root, struct ip_callchain *chain,
- int start);
+ int start, struct symbol **syms);
static int
-__append_chain_children(struct callchain_node *root, struct ip_callchain *chain)
+__append_chain_children(struct callchain_node *root, struct ip_callchain *chain,
+ struct symbol **syms)
{
struct callchain_node *rnode;
/* lookup in childrens */
list_for_each_entry(rnode, &root->children, brothers) {
- int ret = __append_chain(rnode, chain, root->val_nr);
+ int ret = __append_chain(rnode, chain, root->val_nr, syms);
if (!ret)
return 0;
}
@@ -132,7 +136,7 @@ __append_chain_children(struct callchain_node *root, struct ip_callchain *chain)
static int
__append_chain(struct callchain_node *root, struct ip_callchain *chain,
- int start)
+ int start, struct symbol **syms)
{
struct callchain_list *cnode;
int i = start;
@@ -154,7 +158,7 @@ __append_chain(struct callchain_node *root, struct ip_callchain *chain,
/* we match only a part of the node. Split it and add the new chain */
if (i < root->val_nr) {
- split_add_child(root, chain, cnode, i);
+ split_add_child(root, chain, cnode, i, syms);
return 0;
}
@@ -164,11 +168,12 @@ __append_chain(struct callchain_node *root, struct ip_callchain *chain,
return 0;
}
- return __append_chain_children(root, chain);
+ return __append_chain_children(root, chain, syms);
}
-void append_chain(struct callchain_node *root, struct ip_callchain *chain)
+void append_chain(struct callchain_node *root, struct ip_callchain *chain,
+ struct symbol **syms)
{
- if (__append_chain_children(root, chain) == -1)
- add_child(root, chain);
+ if (__append_chain_children(root, chain, syms) == -1)
+ add_child(root, chain, syms);
}