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perf tools: Add printing perf_event_attr config symbol in perf_event_attr__fprintf()
When printing perf_event_attr, always display perf_event_attr config and
its symbol to improve the readability of debugging information.
Before:
# perf --debug verbose=2 record -e cycles,cpu-clock,sched:sched_switch,branch-load-misses,r101,mem:0x0 -C 0 true
<SNIP>
------------------------------------------------------------
perf_event_attr:
size 136
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 5
------------------------------------------------------------
perf_event_attr:
type 1
size 136
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 6
------------------------------------------------------------
perf_event_attr:
type 2
size 136
config 0x143
{ sample_period, sample_freq } 1
sample_type IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER
read_format ID
disabled 1
inherit 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 7
------------------------------------------------------------
perf_event_attr:
type 3
size 136
config 0x10005
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 9
------------------------------------------------------------
perf_event_attr:
type 4
size 136
config 0x101
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 10
------------------------------------------------------------
perf_event_attr:
type 5
size 136
{ sample_period, sample_freq } 1
sample_type IP|TID|TIME|CPU|IDENTIFIER
read_format ID
disabled 1
inherit 1
sample_id_all 1
exclude_guest 1
bp_type 3
{ bp_len, config2 } 0x4
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 11
<SNIP>
After:
# perf --debug verbose=2 record -e cycles,cpu-clock,sched:sched_switch,branch-load-misses,r101,mem:0x0 -C 0 true
<SNIP>
------------------------------------------------------------
perf_event_attr:
type 0 (PERF_TYPE_HARDWARE)
size 136
config 0 (PERF_COUNT_HW_CPU_CYCLES)
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 5
------------------------------------------------------------
perf_event_attr:
type 1 (PERF_TYPE_SOFTWARE)
size 136
config 0 (PERF_COUNT_SW_CPU_CLOCK)
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 6
------------------------------------------------------------
perf_event_attr:
type 2 (PERF_TYPE_TRACEPOINT)
size 136
config 0x143 (sched:sched_switch)
{ sample_period, sample_freq } 1
sample_type IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER
read_format ID
disabled 1
inherit 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 7
------------------------------------------------------------
perf_event_attr:
type 3 (PERF_TYPE_HW_CACHE)
size 136
config 0x10005 (PERF_COUNT_HW_CACHE_RESULT_MISS | PERF_COUNT_HW_CACHE_OP_READ | PERF_COUNT_HW_CACHE_BPU)
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 9
------------------------------------------------------------
perf_event_attr:
type 4 (PERF_TYPE_RAW)
size 136
config 0x101
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
disabled 1
inherit 1
freq 1
sample_id_all 1
exclude_guest 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 10
------------------------------------------------------------
perf_event_attr:
type 5 (PERF_TYPE_BREAKPOINT)
size 136
config 0
{ sample_period, sample_freq } 1
sample_type IP|TID|TIME|CPU|IDENTIFIER
read_format ID
disabled 1
inherit 1
sample_id_all 1
exclude_guest 1
bp_type 3
{ bp_len, config2 } 0x4
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 11
------------------------------------------------------------
perf_event_attr:
type 1 (PERF_TYPE_SOFTWARE)
size 136
config 0x9 (PERF_COUNT_SW_DUMMY)
{ sample_period, sample_freq } 4000
sample_type IP|TID|TIME|CPU|PERIOD|IDENTIFIER
read_format ID
inherit 1
mmap 1
comm 1
freq 1
task 1
sample_id_all 1
mmap2 1
comm_exec 1
ksymbol 1
bpf_event 1
------------------------------------------------------------
sys_perf_event_open: pid -1 cpu 0 group_fd -1 flags 0x8 = 12
<SNIP>
Signed-off-by: Yang Jihong <yangjihong1@huawei.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: anshuman.khandual@arm.com
Cc: mark.rutland@arm.com
Cc: irogers@google.com
Cc: jesussanp@google.com
Cc: peterz@infradead.org
Cc: acme@kernel.org
Cc: jolsa@kernel.org
Cc: alexander.shishkin@linux.intel.com
Cc: mingo@redhat.com
Link: https://lore.kernel.org/r/20230623054416.160858-5-yangjihong1@huawei.com
[ fix perf import test by adding a dummy tracepoint_id__to_name() ]
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Yang Jihong
Namhyung Kim
parent
2e4dd65d7d
commit
929ff679b6
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@ -1,11 +1,13 @@
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// SPDX-License-Identifier: GPL-2.0
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/perf_event.h>
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#include "util/evsel_fprintf.h"
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#include "trace-event.h"
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struct bit_names {
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int bit;
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@ -85,6 +87,80 @@ static const char *stringify_perf_type_id(u64 value)
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return NULL;
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}
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}
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static const char *stringify_perf_hw_id(u64 value)
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{
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switch (value) {
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CPU_CYCLES)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_INSTRUCTIONS)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_REFERENCES)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_MISSES)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_BRANCH_INSTRUCTIONS)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_BRANCH_MISSES)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_BUS_CYCLES)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_STALLED_CYCLES_FRONTEND)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_STALLED_CYCLES_BACKEND)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_REF_CPU_CYCLES)
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default:
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return NULL;
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}
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}
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static const char *stringify_perf_hw_cache_id(u64 value)
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{
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switch (value) {
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_L1D)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_L1I)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_LL)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_DTLB)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_ITLB)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_BPU)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_NODE)
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default:
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return NULL;
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}
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}
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static const char *stringify_perf_hw_cache_op_id(u64 value)
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{
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switch (value) {
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_OP_READ)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_OP_WRITE)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_OP_PREFETCH)
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default:
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return NULL;
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}
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}
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static const char *stringify_perf_hw_cache_op_result_id(u64 value)
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{
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switch (value) {
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_RESULT_ACCESS)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_HW_CACHE_RESULT_MISS)
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default:
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return NULL;
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}
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}
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static const char *stringify_perf_sw_id(u64 value)
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{
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switch (value) {
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CPU_CLOCK)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_TASK_CLOCK)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_PAGE_FAULTS)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CONTEXT_SWITCHES)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CPU_MIGRATIONS)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_PAGE_FAULTS_MIN)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_PAGE_FAULTS_MAJ)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_ALIGNMENT_FAULTS)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_EMULATION_FAULTS)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_DUMMY)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_BPF_OUTPUT)
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ENUM_ID_TO_STR_CASE(PERF_COUNT_SW_CGROUP_SWITCHES)
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default:
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return NULL;
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}
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}
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#undef ENUM_ID_TO_STR_CASE
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#define PRINT_ID(_s, _f) \
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@ -96,12 +172,71 @@ do { \
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snprintf(buf, size, _f" (%s)", value, __s); \
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} while (0)
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#define print_id_unsigned(_s) PRINT_ID(_s, "%"PRIu64)
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#define print_id_hex(_s) PRINT_ID(_s, "%#"PRIx64)
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static void __p_type_id(char *buf, size_t size, u64 value)
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{
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print_id_unsigned(stringify_perf_type_id(value));
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}
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static void __p_config_hw_id(char *buf, size_t size, u64 value)
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{
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print_id_hex(stringify_perf_hw_id(value));
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}
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static void __p_config_sw_id(char *buf, size_t size, u64 value)
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{
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print_id_hex(stringify_perf_sw_id(value));
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}
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static void __p_config_hw_cache_id(char *buf, size_t size, u64 value)
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{
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const char *hw_cache_str = stringify_perf_hw_cache_id(value & 0xff);
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const char *hw_cache_op_str =
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stringify_perf_hw_cache_op_id((value & 0xff00) >> 8);
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const char *hw_cache_op_result_str =
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stringify_perf_hw_cache_op_result_id((value & 0xff0000) >> 16);
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if (hw_cache_str == NULL || hw_cache_op_str == NULL ||
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hw_cache_op_result_str == NULL) {
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snprintf(buf, size, "%#"PRIx64, value);
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} else {
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snprintf(buf, size, "%#"PRIx64" (%s | %s | %s)", value,
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hw_cache_op_result_str, hw_cache_op_str, hw_cache_str);
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}
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}
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#ifdef HAVE_LIBTRACEEVENT
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static void __p_config_tracepoint_id(char *buf, size_t size, u64 value)
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{
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char *str = tracepoint_id_to_name(value);
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print_id_hex(str);
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free(str);
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}
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#endif
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static void __p_config_id(char *buf, size_t size, u32 type, u64 value)
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{
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switch (type) {
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case PERF_TYPE_HARDWARE:
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return __p_config_hw_id(buf, size, value);
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case PERF_TYPE_SOFTWARE:
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return __p_config_sw_id(buf, size, value);
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case PERF_TYPE_HW_CACHE:
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return __p_config_hw_cache_id(buf, size, value);
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case PERF_TYPE_TRACEPOINT:
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#ifdef HAVE_LIBTRACEEVENT
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return __p_config_tracepoint_id(buf, size, value);
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#endif
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case PERF_TYPE_RAW:
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case PERF_TYPE_BREAKPOINT:
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default:
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snprintf(buf, size, "%#"PRIx64, value);
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return;
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}
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}
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#define BUF_SIZE 1024
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#define p_hex(val) snprintf(buf, BUF_SIZE, "%#"PRIx64, (uint64_t)(val))
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@ -111,6 +246,7 @@ static void __p_type_id(char *buf, size_t size, u64 value)
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#define p_branch_sample_type(val) __p_branch_sample_type(buf, BUF_SIZE, val)
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#define p_read_format(val) __p_read_format(buf, BUF_SIZE, val)
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#define p_type_id(val) __p_type_id(buf, BUF_SIZE, val)
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#define p_config_id(val) __p_config_id(buf, BUF_SIZE, attr->type, val)
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#define PRINT_ATTRn(_n, _f, _p, _a) \
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do { \
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@ -130,7 +266,7 @@ int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
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PRINT_ATTRn("type", type, p_type_id, true);
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PRINT_ATTRf(size, p_unsigned);
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PRINT_ATTRf(config, p_hex);
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PRINT_ATTRn("config", config, p_config_id, true);
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PRINT_ATTRn("{ sample_period, sample_freq }", sample_period, p_unsigned, false);
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PRINT_ATTRf(sample_type, p_sample_type);
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PRINT_ATTRf(read_format, p_read_format);
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@ -123,6 +123,14 @@ int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp,
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return 0;
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}
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/*
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* Add this one here not to drag util/trace-event-info.c
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*/
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char *tracepoint_id_to_name(u64 config)
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{
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return NULL;
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}
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/*
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* XXX: All these evsel destructors need some better mechanism, like a linked
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* list of destructors registered when the relevant code indeed is used instead
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