mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-05 16:54:27 +00:00
129f70bd60
This change adds support for new funcgraph tracer options funcgraph-args,
funcgraph-retval, funcgraph-retval-hex and funcgraph-retaddr.
The new added options are:
- args : Show function arguments.
- retval : Show function return value.
- retval-hex : Show function return value in hexadecimal format.
- retaddr : Show function return address.
# ./perf ftrace -G vfs_write --graph-opts retval,retaddr
# tracer: function_graph
#
# CPU DURATION FUNCTION CALLS
# | | | | | | |
5) | mutex_unlock() { /* <-rb_simple_write+0xda/0x150 */
5) 0.188 us | local_clock(); /* <-lock_release+0x2ad/0x440 ret=0x3bf2a3cf90e */
5) | rt_mutex_slowunlock() { /* <-rb_simple_write+0xda/0x150 */
5) | _raw_spin_lock_irqsave() { /* <-rt_mutex_slowunlock+0x4f/0x200 */
5) 0.123 us | preempt_count_add(); /* <-_raw_spin_lock_irqsave+0x23/0x90 ret=0x0 */
5) 0.128 us | local_clock(); /* <-__lock_acquire.isra.0+0x17a/0x740 ret=0x3bf2a3cfc8b */
5) 0.086 us | do_raw_spin_trylock(); /* <-_raw_spin_lock_irqsave+0x4a/0x90 ret=0x1 */
5) 0.845 us | } /* _raw_spin_lock_irqsave ret=0x292 */
5) | _raw_spin_unlock_irqrestore() { /* <-rt_mutex_slowunlock+0x191/0x200 */
5) 0.097 us | local_clock(); /* <-lock_release+0x2ad/0x440 ret=0x3bf2a3cff1f */
5) 0.086 us | do_raw_spin_unlock(); /* <-_raw_spin_unlock_irqrestore+0x23/0x60 ret=0x1 */
5) 0.104 us | preempt_count_sub(); /* <-_raw_spin_unlock_irqrestore+0x35/0x60 ret=0x0 */
5) 0.726 us | } /* _raw_spin_unlock_irqrestore ret=0x80000000 */
5) 1.881 us | } /* rt_mutex_slowunlock ret=0x0 */
5) 2.931 us | } /* mutex_unlock ret=0x0 */
Signed-off-by: Changbin Du <changbin.du@huawei.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20250613114048.132336-1-changbin.du@huawei.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
96 lines
2.1 KiB
C
96 lines
2.1 KiB
C
#ifndef __PERF_FTRACE_H__
|
|
#define __PERF_FTRACE_H__
|
|
|
|
#include <linux/list.h>
|
|
|
|
#include "target.h"
|
|
|
|
struct evlist;
|
|
struct hashamp;
|
|
struct stats;
|
|
|
|
struct perf_ftrace {
|
|
struct evlist *evlist;
|
|
struct target target;
|
|
const char *tracer;
|
|
struct list_head filters;
|
|
struct list_head notrace;
|
|
struct list_head graph_funcs;
|
|
struct list_head nograph_funcs;
|
|
struct list_head event_pair;
|
|
struct hashmap *profile_hash;
|
|
unsigned long percpu_buffer_size;
|
|
bool inherit;
|
|
bool use_nsec;
|
|
unsigned int bucket_range;
|
|
unsigned int min_latency;
|
|
unsigned int max_latency;
|
|
unsigned int bucket_num;
|
|
bool hide_empty;
|
|
int graph_depth;
|
|
int func_stack_trace;
|
|
int func_irq_info;
|
|
int graph_args;
|
|
int graph_retval;
|
|
int graph_retval_hex;
|
|
int graph_retaddr;
|
|
int graph_nosleep_time;
|
|
int graph_noirqs;
|
|
int graph_verbose;
|
|
int graph_thresh;
|
|
int graph_tail;
|
|
};
|
|
|
|
struct filter_entry {
|
|
struct list_head list;
|
|
char name[];
|
|
};
|
|
|
|
#define NUM_BUCKET 22 /* 20 + 2 (for outliers in both direction) */
|
|
|
|
#ifdef HAVE_BPF_SKEL
|
|
|
|
int perf_ftrace__latency_prepare_bpf(struct perf_ftrace *ftrace);
|
|
int perf_ftrace__latency_start_bpf(struct perf_ftrace *ftrace);
|
|
int perf_ftrace__latency_stop_bpf(struct perf_ftrace *ftrace);
|
|
int perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace,
|
|
int buckets[], struct stats *stats);
|
|
int perf_ftrace__latency_cleanup_bpf(struct perf_ftrace *ftrace);
|
|
|
|
#else /* !HAVE_BPF_SKEL */
|
|
|
|
static inline int
|
|
perf_ftrace__latency_prepare_bpf(struct perf_ftrace *ftrace __maybe_unused)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int
|
|
perf_ftrace__latency_start_bpf(struct perf_ftrace *ftrace __maybe_unused)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int
|
|
perf_ftrace__latency_stop_bpf(struct perf_ftrace *ftrace __maybe_unused)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int
|
|
perf_ftrace__latency_read_bpf(struct perf_ftrace *ftrace __maybe_unused,
|
|
int buckets[] __maybe_unused,
|
|
struct stats *stats __maybe_unused)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static inline int
|
|
perf_ftrace__latency_cleanup_bpf(struct perf_ftrace *ftrace __maybe_unused)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
#endif /* HAVE_BPF_SKEL */
|
|
|
|
#endif /* __PERF_FTRACE_H__ */
|