From: Alexey Budankov <alexey.budankov@linux.intel.com>
To: Jiri Olsa <jolsa@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Namhyung Kim <namhyung@kernel.org>,
Andi Kleen <ak@linux.intel.com>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v7 2/2]: perf record: enable asynchronous trace writing
Date: Thu, 6 Sep 2018 15:09:19 +0300 [thread overview]
Message-ID: <61b828af-dd68-a45a-2a90-af8b29cc4c94@linux.intel.com> (raw)
In-Reply-To: <20180906110423.GH8248@krava>
On 06.09.2018 14:04, Jiri Olsa wrote:
> On Wed, Sep 05, 2018 at 10:39:25AM +0300, Alexey Budankov wrote:
>
> SNIP
>
>> + } else if (errno != EAGAIN) {
>> + cblock->aio_fildes = -1;
>> + pr_err("failed to queue perf data, error: %m\n");
>> + break;
>> + }
>> + } while (1);
>> +
>> + return rc;
>> +}
>> +
>> +static int record__aio_sync(struct perf_mmap *md)
>> +{
>
> this is almost identical to record__aio_sync function,
> it looks like we should be able to do the sync with
> single function.. for both the in-between syncs and
> the final one
There is some code duplication here. for()'s loop body at
record__aio_complete() could probably be separated to
a function and then reused by record__aio_sync().
The rest is not obvious at the moment.
>
> jirka
>
next prev parent reply other threads:[~2018-09-06 12:09 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-05 7:16 [PATCH v7 0/2]: perf: reduce data loss when profiling highly parallel CPU bound workloads Alexey Budankov
2018-09-05 7:19 ` [PATCH v7 1/2]: perf util: map data buffer for preserving collected data Alexey Budankov
2018-09-06 11:04 ` Jiri Olsa
2018-09-06 11:50 ` Alexey Budankov
2018-09-06 11:04 ` Jiri Olsa
2018-09-06 11:54 ` Alexey Budankov
2018-09-05 7:39 ` [PATCH v7 2/2]: perf record: enable asynchronous trace writing Alexey Budankov
2018-09-06 11:04 ` Jiri Olsa
2018-09-06 11:57 ` Alexey Budankov
2018-09-06 11:04 ` Jiri Olsa
2018-09-06 11:58 ` Alexey Budankov
2018-09-06 11:04 ` Jiri Olsa
2018-09-06 11:59 ` Alexey Budankov
2018-09-06 11:04 ` Jiri Olsa
2018-09-06 12:09 ` Alexey Budankov [this message]
2018-09-05 11:28 ` [PATCH v7 0/2]: perf: reduce data loss when profiling highly parallel CPU bound workloads Jiri Olsa
2018-09-05 17:37 ` Alexey Budankov
2018-09-05 18:51 ` Arnaldo Carvalho de Melo
2018-09-06 6:03 ` Alexey Budankov
2018-09-06 8:14 ` Jiri Olsa
2018-09-06 8:20 ` Alexey Budankov
2018-09-06 6:59 ` Alexey Budankov
2018-09-06 6:57 ` Alexey Budankov
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