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perf_counter tools: Resolve symbols in callchains

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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>
This commit is contained in:
Frederic Weisbecker
2009-07-01 05:35:14 +02:00
committed by Ingo Molnar
parent 9198aa77b6
commit 4424961ad6
3 changed files with 90 additions and 50 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
tools/perf/util/callchain.h
View File

@@ -4,6 +4,7 @@
#include "../perf.h"
#include "list.h"
#include "rbtree.h"
#include "symbol.h"
struct callchain_node {
@@ -18,6 +19,7 @@ struct callchain_node {
struct callchain_list {
unsigned long ip;
struct symbol *sym;
struct list_head list;
};
@@ -28,6 +30,7 @@ static inline void callchain_init(struct callchain_node *node)
INIT_LIST_HEAD(&node->val);
}
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);
void sort_chain_to_rbtree(struct rb_root *rb_root, struct callchain_node *node);
#endif