mirror of
https://github.com/adulau/aha.git
synced 2024-12-28 11:46:19 +00:00
4eb3e4788b
Currently, the printing of callchains is done in a single
vertical level, this is the "flat" mode:
8.25% [k] copy_user_generic_string
4.19%
copy_user_generic_string
generic_file_aio_read
do_sync_read
vfs_read
sys_pread64
system_call_fastpath
pread64
This patch introduces a new "graph" mode which provides a
hierarchical output of factorized paths recursively sorted:
8.25% [k] copy_user_generic_string
|
|--4.31%-- generic_file_aio_read
| do_sync_read
| vfs_read
| |
| |--4.19%-- sys_pread64
| | system_call_fastpath
| | pread64
| |
| --0.12%-- sys_read
| system_call_fastpath
| __read
|
|--3.24%-- generic_file_buffered_write
| __generic_file_aio_write_nolock
| generic_file_aio_write
| do_sync_write
| reiserfs_file_write
| vfs_write
| |
| |--3.14%-- sys_pwrite64
| | system_call_fastpath
| | __pwrite64
| |
| --0.10%-- sys_write
[...]
The command line has then changed.
By providing the -c option, the callchain will output in the
flat mode by default.
But you can override it:
perf report -c graph
or
perf report -c flat
You can also pass the abreviated mode:
perf report -c g
or
perf report -c gra
will both make use of the graph mode.
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: <1246550301-8954-3-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
43 lines
1 KiB
C
43 lines
1 KiB
C
#ifndef __PERF_CALLCHAIN_H
|
|
#define __PERF_CALLCHAIN_H
|
|
|
|
#include "../perf.h"
|
|
#include <linux/list.h>
|
|
#include <linux/rbtree.h>
|
|
#include "symbol.h"
|
|
|
|
enum chain_mode {
|
|
FLAT,
|
|
GRAPH
|
|
};
|
|
|
|
struct callchain_node {
|
|
struct callchain_node *parent;
|
|
struct list_head brothers;
|
|
struct list_head children;
|
|
struct list_head val;
|
|
struct rb_node rb_node; /* to sort nodes in an rbtree */
|
|
struct rb_root rb_root; /* sorted tree of children */
|
|
unsigned int val_nr;
|
|
u64 hit;
|
|
u64 cumul_hit; /* hit + hits of children */
|
|
};
|
|
|
|
struct callchain_list {
|
|
u64 ip;
|
|
struct symbol *sym;
|
|
struct list_head list;
|
|
};
|
|
|
|
static inline void callchain_init(struct callchain_node *node)
|
|
{
|
|
INIT_LIST_HEAD(&node->brothers);
|
|
INIT_LIST_HEAD(&node->children);
|
|
INIT_LIST_HEAD(&node->val);
|
|
}
|
|
|
|
void append_chain(struct callchain_node *root, struct ip_callchain *chain,
|
|
struct symbol **syms);
|
|
void sort_chain_flat(struct rb_root *rb_root, struct callchain_node *node);
|
|
void sort_chain_graph(struct rb_root *rb_root, struct callchain_node *node);
|
|
#endif
|