From: Changbin Du <changbin.du@gmail.com>
To: Jiri Olsa <jolsa@redhat.com>, Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Namhyung Kim <namhyung@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
linux-kernel@vger.kernel.org, Changbin Du <changbin.du@gmail.com>
Subject: [PATCH v4 00/17] perf: ftrace enhancement
Date: Fri, 10 Jul 2020 21:43:05 +0800 [thread overview]
Message-ID: <20200710134322.15400-1-changbin.du@gmail.com> (raw)
The perf has basic kernel ftrace support but lack support of most tracing
options. This serias is target to enhance the perf ftrace functionality so
that we can make full use of kernel ftrace with perf.
In general, this serias be cataloged into two main changes:
1) Improve usability of existing functions. For example, we don't need to type
extra option to select the tracer.
2) Add new options to support all other ftrace functions.
Here is a glance of all ftrace functions with this serias:
$ sudo perf ftrace -h
Usage: perf ftrace [<options>] [<command>]
or: perf ftrace [<options>] -- <command> [<options>]
-a, --all-cpus system-wide collection from all CPUs
-C, --cpu <cpu> list of cpus to monitor
-D, --delay <n> ms to wait before starting tracing after program start
-F, --funcs Show available functions to filter
-G, --graph-funcs <func>
trace given functions using function_graph tracer
-g, --nograph-funcs <func>
Set nograph filter on given functions
-m, --buffer-size <size>
size of per cpu buffer
-N, --notrace-funcs <func>
do not trace given functions
-p, --pid <pid> trace on existing process id
-t, --tid <tid> trace on existing thread id (exclusive to --pid)
-T, --trace-funcs <func>
trace given functions using function tracer
-t, --tracer <tracer>
tracer to use: function or function_graph (This option is deprecated)
-v, --verbose be more verbose
--func-opts <options>
function tracer options, available options: call-graph,irq-info
--graph-opts <options>
graph tracer options, available options: nosleep-time,noirqs,verbose,thresh=<n>,depth=<n>
--inherit trace children processes
v4:
o add util/parse-sublevel-options.c
O remove -D/--graph-depth
v3:
o add --func-opts and --graph-opts to set tracer specific options.
o support units as a suffix for option '-m/--buffer-size'.
v2:
o patches for option '-u/--userstacktrace' and '--no-pager' are dropped.
o update all related perf documentation.
o rename some options. Now all funcgraph tracer options are prefixed with
'--graph-', while all function tracer options are prefixed with '--func-'.
o mark old options deprecated instead of removing them.
Changbin Du (17):
perf ftrace: select function/function_graph tracer automatically
perf ftrace: add option '-F/--funcs' to list available functions
perf ftrace: add option -t/--tid to filter by thread id
perf ftrace: factor out function write_tracing_file_int()
perf ftrace: add option '-m/--buffer-size' to set per-cpu buffer size
perf ftrace: show trace column header
perf ftrace: add option '--inherit' to trace children processes
perf: util: add general function to parse sublevel options
perf ftrace: add support for tracing option 'func_stack_trace'
perf ftrace: add support for trace option sleep-time
perf ftrace: add support for trace option funcgraph-irqs
perf ftrace: add support for tracing option 'irq-info'
perf ftrace: add option 'verbose' to show more info for graph tracer
perf ftrace: add support for trace option tracing_thresh
perf: ftrace: allow set graph depth by '--graph-opts'
perf ftrace: add option -D/--delay to delay tracing
perf ftrace: add change log
tools/perf/Documentation/perf-config.txt | 5 -
tools/perf/Documentation/perf-ftrace.txt | 37 ++-
tools/perf/builtin-ftrace.c | 367 ++++++++++++++++++++++-
tools/perf/util/Build | 1 +
tools/perf/util/debug.c | 61 ++--
tools/perf/util/parse-sublevel-options.c | 63 ++++
tools/perf/util/parse-sublevel-options.h | 11 +
7 files changed, 477 insertions(+), 68 deletions(-)
create mode 100644 tools/perf/util/parse-sublevel-options.c
create mode 100644 tools/perf/util/parse-sublevel-options.h
--
2.25.1
next reply other threads:[~2020-07-10 13:43 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-10 13:43 Changbin Du [this message]
2020-07-10 13:43 ` [PATCH v4 01/17] perf ftrace: select function/function_graph tracer automatically Changbin Du
2020-07-10 14:14 ` Namhyung Kim
2020-07-11 12:19 ` Changbin Du
2020-07-10 13:43 ` [PATCH v4 02/17] perf ftrace: add option '-F/--funcs' to list available functions Changbin Du
2020-07-10 13:43 ` [PATCH v4 03/17] perf ftrace: add option -t/--tid to filter by thread id Changbin Du
2020-07-10 13:43 ` [PATCH v4 04/17] perf ftrace: factor out function write_tracing_file_int() Changbin Du
2020-07-10 13:43 ` [PATCH v4 05/17] perf ftrace: add option '-m/--buffer-size' to set per-cpu buffer size Changbin Du
2020-07-10 13:43 ` [PATCH v4 06/17] perf ftrace: show trace column header Changbin Du
2020-07-10 13:43 ` [PATCH v4 07/17] perf ftrace: add option '--inherit' to trace children processes Changbin Du
2020-07-10 13:43 ` [PATCH v4 08/17] perf: util: add general function to parse sublevel options Changbin Du
2020-07-10 14:29 ` Namhyung Kim
2020-07-11 12:37 ` Changbin Du
2020-07-10 13:43 ` [PATCH v4 09/17] perf ftrace: add support for tracing option 'func_stack_trace' Changbin Du
2020-07-10 13:43 ` [PATCH v4 10/17] perf ftrace: add support for trace option sleep-time Changbin Du
2020-07-10 13:43 ` [PATCH v4 11/17] perf ftrace: add support for trace option funcgraph-irqs Changbin Du
2020-07-10 13:43 ` [PATCH v4 12/17] perf ftrace: add support for tracing option 'irq-info' Changbin Du
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