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perf tools: Add printing perf_event_attr type symbol in perf_event_attr__fprintf()
When printing perf_event_attr, always display perf_event_attr type 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
------------------------------------------------------------
<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
{ 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
{ 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
{ 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
{ 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
{ 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
------------------------------------------------------------
<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/20230623054416.160858-4-yangjihong1@huawei.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Yang Jihong
Namhyung Kim
parent
5492e72500
commit
2e4dd65d7d
1 changed files with 33 additions and 1 deletions
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@ -71,6 +71,37 @@ static void __p_read_format(char *buf, size_t size, u64 value)
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__p_bits(buf, size, value, bits);
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}
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#define ENUM_ID_TO_STR_CASE(x) case x: return (#x);
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static const char *stringify_perf_type_id(u64 value)
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{
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switch (value) {
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ENUM_ID_TO_STR_CASE(PERF_TYPE_HARDWARE)
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ENUM_ID_TO_STR_CASE(PERF_TYPE_SOFTWARE)
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ENUM_ID_TO_STR_CASE(PERF_TYPE_TRACEPOINT)
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ENUM_ID_TO_STR_CASE(PERF_TYPE_HW_CACHE)
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ENUM_ID_TO_STR_CASE(PERF_TYPE_RAW)
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ENUM_ID_TO_STR_CASE(PERF_TYPE_BREAKPOINT)
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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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do { \
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const char *__s = _s; \
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if (__s == NULL) \
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snprintf(buf, size, _f, value); \
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else \
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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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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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#define BUF_SIZE 1024
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#define p_hex(val) snprintf(buf, BUF_SIZE, "%#"PRIx64, (uint64_t)(val))
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@ -79,6 +110,7 @@ static void __p_read_format(char *buf, size_t size, u64 value)
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#define p_sample_type(val) __p_sample_type(buf, BUF_SIZE, val)
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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 PRINT_ATTRn(_n, _f, _p, _a) \
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do { \
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@ -96,7 +128,7 @@ int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
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char buf[BUF_SIZE];
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int ret = 0;
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PRINT_ATTRf(type, p_unsigned);
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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("{ sample_period, sample_freq }", sample_period, p_unsigned, false);
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