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From: Namhyung Kim <namhyung@kernel.org>
To: Jiri Olsa <jolsa@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>,
	lkml <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@kernel.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Andi Kleen <andi@firstfloor.org>,
	Alexey Budankov <alexey.budankov@linux.intel.com>,
	kernel-team@lge.com
Subject: Re: [PATCH 39/48] perf record: Move waking into struct record
Date: Mon, 17 Sep 2018 20:31:31 +0900	[thread overview]
Message-ID: <20180917113131.GD18395@sejong> (raw)
In-Reply-To: <20180913125450.21342-40-jolsa@kernel.org>

On Thu, Sep 13, 2018 at 02:54:41PM +0200, Jiri Olsa wrote:
> We need to keep global number of 'waking' now.
> 
> TODO: make this multiple threads safe.

Why not using atomic APIs?

Thanks,
Namhyung


> 
> Link: http://lkml.kernel.org/n/tip-veetgk62aisdt1cxaa6fbgox@git.kernel.org
> Signed-off-by: Jiri Olsa <jolsa@kernel.org>
> ---
>  tools/perf/builtin-record.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
> index d6fef646b67f..62ff4411ce39 100644
> --- a/tools/perf/builtin-record.c
> +++ b/tools/perf/builtin-record.c
> @@ -94,6 +94,7 @@ struct record {
>  	unsigned long long	samples;
>  	struct record_thread	*threads;
>  	int			threads_cnt;
> +	unsigned long		waking;
>  };
>  
>  static __thread struct record_thread *thread;
> @@ -1143,7 +1144,6 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
>  {
>  	int err;
>  	int status = 0;
> -	unsigned long waking = 0;
>  	const bool forks = argc > 0;
>  	struct perf_tool *tool = &rec->tool;
>  	struct record_opts *opts = &rec->opts;
> @@ -1400,8 +1400,8 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
>  
>  			if (!quiet)
>  				fprintf(stderr, "[ perf record: dump data: Woken up %ld times ]\n",
> -					waking);
> -			waking = 0;
> +					rec->waking);
> +			rec->waking = 0;
>  			fd = record__switch_output(rec, false);
>  			if (fd < 0) {
>  				pr_err("Failed to switch to new file\n");
> @@ -1425,7 +1425,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
>  			 */
>  			if (err > 0 || (err < 0 && errno == EINTR))
>  				err = 0;
> -			waking++;
> +			rec->waking++;
>  
>  			if (perf_evlist__filter_pollfd(rec->evlist, POLLERR | POLLHUP) == 0)
>  				draining = true;
> @@ -1454,7 +1454,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
>  	}
>  
>  	if (!quiet)
> -		fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", waking);
> +		fprintf(stderr, "[ perf record: Woken up %ld times to write data ]\n", rec->waking);
>  
>  	if (target__none(&rec->opts.target))
>  		record__synthesize_workload(rec, true);
> -- 
> 2.17.1
> 

  reply	other threads:[~2018-09-17 11:31 UTC|newest]

Thread overview: 101+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-13 12:54 [RFCv2 00/48] perf tools: Add threads to record command Jiri Olsa
2018-09-13 12:54 ` [PATCH 01/48] perf tools: Remove perf_tool from event_op2 Jiri Olsa
2018-09-25  9:31   ` [tip:perf/core] " tip-bot for Jiri Olsa
2018-09-13 12:54 ` [PATCH 02/48] perf tools: Remove perf_tool from event_op3 Jiri Olsa
2018-09-18 20:56   ` Arnaldo Carvalho de Melo
2018-09-23 19:45     ` Jiri Olsa
2018-09-25  9:31   ` [tip:perf/core] " tip-bot for Jiri Olsa
2018-09-13 12:54 ` [PATCH 03/48] perf tools: Pass struct perf_mmap into auxtrace_mmap__read* functions Jiri Olsa
2018-09-25  9:32   ` [tip:perf/core] perf auxtrace: Pass struct perf_mmap into mmap__read* functions tip-bot for Jiri Olsa
2018-09-13 12:54 ` [PATCH 04/48] perf tools: Add struct perf_mmap arg into record__write Jiri Olsa
2018-09-25  9:32   ` [tip:perf/core] perf tools: Add 'struct perf_mmap' arg to record__write() tip-bot for Jiri Olsa
2018-09-13 12:54 ` [PATCH 05/48] perf tools: Use a software dummy event to track task/mmap events Jiri Olsa
2018-09-13 12:54 ` [PATCH 06/48] perf tools: Create separate mmap for dummy tracking event Jiri Olsa
2018-09-13 12:54 ` [PATCH 07/48] perf tools: Extend perf_evlist__mmap_ex() to use track mmap Jiri Olsa
2018-09-13 12:54 ` [PATCH 08/48] perf report: Skip dummy tracking event Jiri Olsa
2018-09-13 12:54 ` [PATCH 09/48] perf tools: Make copyfile_offset global Jiri Olsa
2018-09-18 20:54   ` Arnaldo Carvalho de Melo
2018-09-23 19:44     ` Jiri Olsa
2018-09-25  9:33   ` [tip:perf/core] perf util: Make copyfile_offset() global tip-bot for Jiri Olsa
2018-09-13 12:54 ` [PATCH 10/48] perf tools: Add HEADER_DATA_INDEX feature Jiri Olsa
2018-09-13 12:54 ` [PATCH 11/48] perf tools: Handle indexed data file properly Jiri Olsa
2018-09-13 12:54 ` [PATCH 12/48] perf tools: Add perf_data__create_index function Jiri Olsa
2018-09-13 12:54 ` [PATCH 13/48] perf record: Add --index option for building index table Jiri Olsa
2018-09-13 12:54 ` [PATCH 14/48] perf tools: Introduce thread__comm(_str)_by_time() helpers Jiri Olsa
2018-09-13 12:54 ` [PATCH 15/48] perf tools: Add a test case for thread comm handling Jiri Olsa
2018-09-13 12:54 ` [PATCH 16/48] perf tools: Use thread__comm_by_time() when adding hist entries Jiri Olsa
2018-09-13 12:54 ` [PATCH 17/48] perf tools: Convert dead thread list into rbtree Jiri Olsa
2018-09-13 12:54 ` [PATCH 18/48] perf tools: Introduce machine__find*_thread_by_time() Jiri Olsa
2018-09-13 12:54 ` [PATCH 19/48] perf tools: Add thread::exited flag Jiri Olsa
2018-09-13 12:54 ` [PATCH 20/48] perf tools: Add a test case for timed thread handling Jiri Olsa
2018-09-13 12:54 ` [PATCH 21/48] perf tools: Maintain map groups list in a leader thread Jiri Olsa
2018-09-13 12:54 ` [PATCH 22/48] perf tools: Introduce thread__find_symbol_by_time() and friends Jiri Olsa
2018-09-13 12:54 ` [PATCH 23/48] perf callchain: Use thread__find_addr_location_by_time() " Jiri Olsa
2018-09-13 12:54 ` [PATCH 24/48] perf tools: Add a test case for timed map groups handling Jiri Olsa
2018-09-13 12:54 ` [PATCH 25/48] perf tools: Save timestamp of a map creation Jiri Olsa
2018-09-13 12:54 ` [PATCH 26/48] perf tools: Introduce map_groups__{insert,find}_by_time() Jiri Olsa
2018-09-13 12:54 ` [PATCH 27/48] perf tools: Use map_groups__find_addr_by_time() Jiri Olsa
2018-09-13 12:54 ` [PATCH 28/48] perf tools: Add testcase for managing maps with time Jiri Olsa
2018-09-13 12:54 ` [PATCH 29/48] perf callchain: Maintain libunwind's address space in map_groups Jiri Olsa
2018-09-14 18:15   ` Arnaldo Carvalho de Melo
2018-09-14 19:00     ` Jiri Olsa
2018-09-13 12:54 ` [PATCH 30/48] perf tools: Rename perf_evlist__munmap_filtered to perf_mmap__put_filtered Jiri Olsa
2018-09-13 12:54 ` [PATCH 31/48] tools lib fd array: Introduce fdarray__add_clone function Jiri Olsa
2018-09-13 12:54 ` [PATCH 32/48] tools lib subcmd: Add OPT_INTEGER_OPTARG|_SET options Jiri Olsa
2018-09-13 12:54 ` [PATCH 33/48] perf tools: Move __perf_session__process_events args into struct Jiri Olsa
2018-09-13 12:54 ` [PATCH 34/48] perf ui progress: Fix index progress display Jiri Olsa
2018-09-13 12:54 ` [PATCH 35/48] perf tools: Add threads debug variable Jiri Olsa
2018-09-13 12:54 ` [PATCH 36/48] perf tools: Add perf_mmap__read_tail function Jiri Olsa
2018-09-13 12:54 ` [PATCH 37/48] perf record: Introduce struct record_thread Jiri Olsa
2018-09-17 11:26   ` Namhyung Kim
2018-09-23 19:31     ` Jiri Olsa
2018-09-13 12:54 ` [PATCH 38/48] perf record: Read record thread's mmaps Jiri Olsa
2018-09-17 11:28   ` Namhyung Kim
2018-09-23 19:35     ` Jiri Olsa
2018-09-13 12:54 ` [PATCH 39/48] perf record: Move waking into struct record Jiri Olsa
2018-09-17 11:31   ` Namhyung Kim [this message]
2018-09-23 19:36     ` Jiri Olsa
2018-09-13 12:54 ` [PATCH 40/48] perf record: Move samples into struct record_thread Jiri Olsa
2018-09-13 12:54 ` [PATCH 41/48] perf record: Move bytes_written " Jiri Olsa
2018-09-13 12:54 ` [PATCH 42/48] perf record: Add record_thread start/stop/process functions Jiri Olsa
2018-09-13 12:54 ` [PATCH 43/48] perf record: Wait for all threads being started Jiri Olsa
2018-09-13 12:54 ` [PATCH 44/48] perf record: Add --threads option Jiri Olsa
2018-09-17 11:37   ` Namhyung Kim
2018-09-13 12:54 ` [PATCH 45/48] perf record: Add --thread-stats option support Jiri Olsa
2018-09-13 12:54 ` [PATCH 46/48] perf record: Add maps to --thread-stats output Jiri Olsa
2018-09-13 12:54 ` [PATCH 47/48] perf record: Spread maps for --threads option Jiri Olsa
2018-09-17 11:40   ` Namhyung Kim
2018-09-23 19:44     ` Jiri Olsa
2018-09-24 14:22       ` Arnaldo Carvalho de Melo
2018-09-26  6:23         ` Jiri Olsa
2018-09-27 16:01           ` Jiri Olsa
2018-09-28  6:25             ` Namhyung Kim
2018-09-13 12:54 ` [PATCH 48/48] perf record: Spread maps for --threads=X option Jiri Olsa
2018-09-13 16:10 ` [RFCv2 00/48] perf tools: Add threads to record command Alexey Budankov
2018-09-14  2:29   ` Namhyung Kim
2018-09-14  7:15     ` Alexey Budankov
2018-09-14  8:23     ` Jiri Olsa
2018-09-14  9:40       ` Ingo Molnar
2018-09-14 11:15         ` Peter Zijlstra
2018-09-14 11:47           ` Jiri Olsa
2018-09-14 12:01             ` Peter Zijlstra
2018-09-14 12:13               ` Ingo Molnar
2018-09-14 12:19                 ` Jiri Olsa
2018-09-14 12:45                   ` Ingo Molnar
2018-09-14  9:33     ` Ingo Molnar
2018-09-14  8:26   ` Jiri Olsa
2018-09-14  8:28     ` Jiri Olsa
2018-09-14  9:37       ` Alexey Budankov
2018-09-21  6:13         ` Alexey Budankov
2018-09-21 12:15           ` Alexey Budankov
2018-09-24 19:23             ` Alexey Budankov
2018-10-02 21:41               ` Jiri Olsa
2018-10-03  7:01                 ` Alexey Budankov
2018-09-23 19:30           ` Jiri Olsa
2018-09-24  7:02             ` Alexey Budankov
2018-09-24 13:09               ` Alexey Budankov
2018-09-24 14:29                 ` Jiri Olsa
2018-09-24 18:32                   ` Alexey Budankov
2018-09-24 19:12                     ` Alexey Budankov
2018-10-05  6:14                     ` Namhyung Kim
2018-09-14 17:02 ` Andi Kleen

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