From: Yang Jihong <yangjihong1@huawei.com>
To: <peterz@infradead.org>, <mingo@redhat.com>, <acme@kernel.org>,
<mark.rutland@arm.com>, <alexander.shishkin@linux.intel.com>,
<jolsa@kernel.org>, <namhyung@kernel.org>, <irogers@google.com>,
<adrian.hunter@intel.com>, <anshuman.khandual@arm.com>,
<jesussanp@google.com>, <linux-perf-users@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Cc: <yangjihong1@huawei.com>
Subject: [PATCH v4 0/4] perf tools: Add printing perf_event_attr `config` and `id` symbol in perf_event_attr__fprintf()
Date: Tue, 16 May 2023 06:55:34 +0000 [thread overview]
Message-ID: <20230516065538.83021-1-yangjihong1@huawei.com> (raw)
Add printing perf_event_attr `config` and `id` 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
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>
Yang Jihong (4):
perf trace-event-info: Add tracepoint_id_to_name() helper
perf tools: Extend PRINT_ATTRf to support printing of members with a
value of 0
perf tools: Add printing perf_event_attr type symbol in
perf_event_attr__fprintf()
perf tools: Add printing perf_event_attr config symbol in
perf_event_attr__fprintf()
tools/perf/util/perf_event_attr_fprintf.c | 186 ++++++++++++++++++++--
tools/perf/util/trace-event-info.c | 11 ++
tools/perf/util/trace-event.h | 6 +
3 files changed, 194 insertions(+), 9 deletions(-)
--
Changes since v3:
- Change print_id() helper to a macro function to support printing of both hex and unsigned formats.
Changes since v2:
- Adjusting the order of local declarations in tracepoint_id_to_name()
- Remove unnecessary parentheses and "!= NULL" in tracepoint_id_to_name()
- Remove unnecessary comment of synchronizing with perf_event.h
- Add print_id helper()
- Remove "#ifdef HAVE_LIBTRACEEVENT" put around "#include "trace-event.h"
- Remove comment of "// for free" for "#include <stdlib.h>"
Changes since v1:
- Modify initialization of path in tracepoint_id_to_path().
- Replace snprintf&strdup with asprintf.
- Use switch/case to get stringified name for type and id.
2.30.GIT
next reply other threads:[~2023-05-16 6:57 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-16 6:55 Yang Jihong [this message]
2023-05-16 6:55 ` [PATCH v4 1/4] perf trace-event-info: Add tracepoint_id_to_name() helper Yang Jihong
2023-05-16 6:55 ` [PATCH v4 2/4] perf tools: Extend PRINT_ATTRf to support printing of members with a value of 0 Yang Jihong
2023-05-16 6:55 ` [PATCH v4 3/4] perf tools: Add printing perf_event_attr type symbol in perf_event_attr__fprintf() Yang Jihong
2023-05-16 6:55 ` [PATCH v4 4/4] perf tools: Add printing perf_event_attr config " Yang Jihong
2023-05-16 9:49 ` [PATCH v4 0/4] perf tools: Add printing perf_event_attr `config` and `id` " Adrian Hunter
2023-05-19 1:19 ` Yang Jihong
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