From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Wang Nan <wangnan0@huawei.com>
Cc: arnaldo.melo@gmail.com, linux-kernel@vger.kernel.org,
He Kuang <hekuang@huawei.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Jiri Olsa <jolsa@kernel.org>,
Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>,
Namhyung Kim <namhyung@kernel.org>, Zefan Li <lizefan@huawei.com>,
pi3orama@163.com
Subject: Re: [PATCH 10/17] perf tools: Enable overwrite settings
Date: Mon, 16 May 2016 10:38:52 -0300 [thread overview]
Message-ID: <20160516133852.GD5475@kernel.org> (raw)
In-Reply-To: <1463126174-119290-11-git-send-email-wangnan0@huawei.com>
Em Fri, May 13, 2016 at 07:56:07AM +0000, Wang Nan escreveu:
> This patch allows following config terms and option:
>
> Globally setting events to overwrite;
>
> # perf record --overwrite ...
>
> Set specific events to be overwrite or no-overwrite.
>
> # perf record --event cycles/overwrite/ ...
> # perf record --event cycles/no-overwrite/ ...
>
> Add missing config terms and update config term array size because the
> longest string length is changed.
You forgot to add this to the documentation, please add it when you
respin this patch. If you done so in a separate patch, please yank it
from there and add it here.
- Arnaldo
> Signed-off-by: Wang Nan <wangnan0@huawei.com>
> Signed-off-by: He Kuang <hekuang@huawei.com>
> Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
> Cc: Jiri Olsa <jolsa@kernel.org>
> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
> Cc: Namhyung Kim <namhyung@kernel.org>
> Cc: Zefan Li <lizefan@huawei.com>
> Cc: pi3orama@163.com
> ---
> tools/perf/builtin-record.c | 1 +
> tools/perf/perf.h | 1 +
> tools/perf/util/evsel.c | 4 ++++
> tools/perf/util/evsel.h | 2 ++
> tools/perf/util/parse-events.c | 20 ++++++++++++++++++--
> tools/perf/util/parse-events.h | 2 ++
> tools/perf/util/parse-events.l | 2 ++
> 7 files changed, 30 insertions(+), 2 deletions(-)
>
> diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
> index d9a92e0..939aa68 100644
> --- a/tools/perf/builtin-record.c
> +++ b/tools/perf/builtin-record.c
> @@ -1265,6 +1265,7 @@ struct option __record_options[] = {
> OPT_BOOLEAN_SET('i', "no-inherit", &record.opts.no_inherit,
> &record.opts.no_inherit_set,
> "child tasks do not inherit counters"),
> + OPT_BOOLEAN(0, "overwrite", &record.opts.overwrite, "use overwrite mode"),
> OPT_UINTEGER('F', "freq", &record.opts.user_freq, "profile at this frequency"),
> OPT_CALLBACK('m', "mmap-pages", &record.opts, "pages[,pages]",
> "number of mmap data pages and AUX area tracing mmap pages",
> diff --git a/tools/perf/perf.h b/tools/perf/perf.h
> index c35bcfd..386d030 100644
> --- a/tools/perf/perf.h
> +++ b/tools/perf/perf.h
> @@ -59,6 +59,7 @@ struct record_opts {
> bool record_switch_events;
> bool all_kernel;
> bool all_user;
> + bool overwrite;
> unsigned int freq;
> unsigned int mmap_pages;
> unsigned int auxtrace_mmap_pages;
> diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
> index a23f547..be4fc25 100644
> --- a/tools/perf/util/evsel.c
> +++ b/tools/perf/util/evsel.c
> @@ -670,6 +670,9 @@ static void apply_config_terms(struct perf_evsel *evsel,
> */
> attr->inherit = term->val.inherit ? 1 : 0;
> break;
> + case PERF_EVSEL__CONFIG_TERM_OVERWRITE:
> + evsel->overwrite = term->val.overwrite ? 1 : 0;
> + break;
> default:
> break;
> }
> @@ -746,6 +749,7 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
>
> attr->sample_id_all = perf_missing_features.sample_id_all ? 0 : 1;
> attr->inherit = !opts->no_inherit;
> + evsel->overwrite = opts->overwrite;
>
> perf_evsel__set_sample_bit(evsel, IP);
> perf_evsel__set_sample_bit(evsel, TID);
> diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
> index c1f1015..bce99fa 100644
> --- a/tools/perf/util/evsel.h
> +++ b/tools/perf/util/evsel.h
> @@ -44,6 +44,7 @@ enum {
> PERF_EVSEL__CONFIG_TERM_CALLGRAPH,
> PERF_EVSEL__CONFIG_TERM_STACK_USER,
> PERF_EVSEL__CONFIG_TERM_INHERIT,
> + PERF_EVSEL__CONFIG_TERM_OVERWRITE,
> PERF_EVSEL__CONFIG_TERM_MAX,
> };
>
> @@ -57,6 +58,7 @@ struct perf_evsel_config_term {
> char *callgraph;
> u64 stack_user;
> bool inherit;
> + bool overwrite;
> } val;
> };
>
> diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
> index bcbc983..85f813d 100644
> --- a/tools/perf/util/parse-events.c
> +++ b/tools/perf/util/parse-events.c
> @@ -900,6 +900,8 @@ static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
> [PARSE_EVENTS__TERM_TYPE_STACKSIZE] = "stack-size",
> [PARSE_EVENTS__TERM_TYPE_NOINHERIT] = "no-inherit",
> [PARSE_EVENTS__TERM_TYPE_INHERIT] = "inherit",
> + [PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",
> + [PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
> };
>
> static bool config_term_shrinked;
> @@ -992,6 +994,12 @@ do { \
> case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
> CHECK_TYPE_VAL(NUM);
> break;
> + case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
> + CHECK_TYPE_VAL(NUM);
> + break;
> + case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
> + CHECK_TYPE_VAL(NUM);
> + break;
> case PARSE_EVENTS__TERM_TYPE_NAME:
> CHECK_TYPE_VAL(STR);
> break;
> @@ -1040,6 +1048,8 @@ static int config_term_tracepoint(struct perf_event_attr *attr,
> case PARSE_EVENTS__TERM_TYPE_STACKSIZE:
> case PARSE_EVENTS__TERM_TYPE_INHERIT:
> case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
> + case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
> + case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
> return config_term_common(attr, term, err);
> default:
> if (err) {
> @@ -1109,6 +1119,12 @@ do { \
> case PARSE_EVENTS__TERM_TYPE_NOINHERIT:
> ADD_CONFIG_TERM(INHERIT, inherit, term->val.num ? 0 : 1);
> break;
> + case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
> + ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 1 : 0);
> + break;
> + case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
> + ADD_CONFIG_TERM(OVERWRITE, overwrite, term->val.num ? 0 : 1);
> + break;
> default:
> break;
> }
> @@ -2322,9 +2338,9 @@ static void config_terms_list(char *buf, size_t buf_sz)
> char *parse_events_formats_error_string(char *additional_terms)
> {
> char *str;
> - /* "branch_type" is the longest name */
> + /* "no-overwrite" is the longest name */
> char static_terms[__PARSE_EVENTS__TERM_TYPE_NR *
> - (sizeof("branch_type") - 1)];
> + (sizeof("no-overwrite") - 1)];
>
> config_terms_list(static_terms, sizeof(static_terms));
> /* valid terms */
> diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
> index d740c3c..f341d9d 100644
> --- a/tools/perf/util/parse-events.h
> +++ b/tools/perf/util/parse-events.h
> @@ -68,6 +68,8 @@ enum {
> PARSE_EVENTS__TERM_TYPE_STACKSIZE,
> PARSE_EVENTS__TERM_TYPE_NOINHERIT,
> PARSE_EVENTS__TERM_TYPE_INHERIT,
> + PARSE_EVENTS__TERM_TYPE_NOOVERWRITE,
> + PARSE_EVENTS__TERM_TYPE_OVERWRITE,
> __PARSE_EVENTS__TERM_TYPE_NR,
> };
>
> diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
> index 1477fbc..cc4c426 100644
> --- a/tools/perf/util/parse-events.l
> +++ b/tools/perf/util/parse-events.l
> @@ -201,6 +201,8 @@ call-graph { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_CALLGRAPH); }
> stack-size { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_STACKSIZE); }
> inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_INHERIT); }
> no-inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOINHERIT); }
> +overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_OVERWRITE); }
> +no-overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOOVERWRITE); }
> , { return ','; }
> "/" { BEGIN(INITIAL); return '/'; }
> {name_minus} { return str(yyscanner, PE_NAME); }
> --
> 1.8.3.4
next prev parent reply other threads:[~2016-05-16 13:39 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-13 7:55 [PATCH 00/17] perf tools: Support overwritable ring buffer Wang Nan
2016-05-13 7:55 ` [PATCH 01/17] perf tools: Extract __perf_evlist__mmap_read() Wang Nan
2016-05-13 13:03 ` Arnaldo Carvalho de Melo
2016-05-13 7:55 ` [PATCH 02/17] perf tools: Add evlist channel helpers Wang Nan
2016-05-13 13:05 ` Arnaldo Carvalho de Melo
2016-05-18 3:27 ` Wangnan (F)
2016-05-18 13:23 ` Arnaldo Carvalho de Melo
2016-05-13 7:56 ` [PATCH 03/17] perf tools: Automatically add new channel according to evlist Wang Nan
2016-05-13 7:56 ` [PATCH 04/17] perf tools: Operate multiple channels Wang Nan
2016-05-13 7:56 ` [PATCH 05/17] perf record: Prevent reading invalid data in record__mmap_read Wang Nan
2016-05-13 7:56 ` [PATCH 06/17] perf tools: Squash overwrite setting into channel Wang Nan
2016-05-13 7:56 ` [PATCH 07/17] perf record: Don't read from and poll overwrite channel Wang Nan
2016-05-13 7:56 ` [PATCH 08/17] perf record: Don't poll on " Wang Nan
2016-05-13 13:12 ` Arnaldo Carvalho de Melo
2016-05-16 3:18 ` Wangnan (F)
2016-05-13 7:56 ` [PATCH 09/17] perf tools: Detect avalibility of write_backward Wang Nan
2016-05-13 13:08 ` Arnaldo Carvalho de Melo
2016-05-20 15:31 ` Wangnan (F)
2016-05-20 15:39 ` Arnaldo Carvalho de Melo
2016-05-13 7:56 ` [PATCH 10/17] perf tools: Enable overwrite settings Wang Nan
2016-05-16 13:38 ` Arnaldo Carvalho de Melo [this message]
2016-05-13 7:56 ` [PATCH 11/17] perf tools: Set write_backward attribut bit for overwrite events Wang Nan
2016-05-13 7:56 ` [PATCH 12/17] perf tools: Record fd into perf_mmap Wang Nan
2016-05-13 7:56 ` [PATCH 13/17] perf tools: Add API to pause a channel Wang Nan
2016-05-13 7:56 ` [PATCH 14/17] perf record: Rename variable to make code clear Wang Nan
2016-05-13 7:56 ` [PATCH 15/17] perf record: Read from backward ring buffer Wang Nan
2016-05-13 7:56 ` [PATCH 16/17] perf record: Toggle overwrite ring buffer for reading Wang Nan
2016-05-13 7:56 ` [PATCH 17/17] perf tools: Don't warn about out of order event if write_backward is used Wang Nan
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