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From: Richard Palethorpe <rpalethorpe@suse.de>
To: ltp@lists.linux.it
Subject: [LTP] [PATCH v2 4/4] Add delay bias for difficult races
Date: Tue, 11 Sep 2018 11:14:16 +0200	[thread overview]
Message-ID: <87h8iw5rbr.fsf@rpws.prws.suse.cz> (raw)
In-Reply-To: <20180910223806.GA9189@dell5510>

Hello,

Petr Vorel <pvorel@suse.cz> writes:

> Hi Richard,
>
>> Races with short exploitation windows and nonlinear timings, given varying
>> chronological order, appear to require an offset to the synchronisation to
>> achieve the correct order so that the average timings are valid for the race
>> condition.
>
>> Signed-off-by: Richard Palethorpe <rpalethorpe@suse.com>
>> ---
>
>> +static void tst_fzsync_pair_add_bias(struct tst_fzsync_pair *pair, int change)
>> +{
>> +	if (pair->sampling > 0) {
>> +		pair->delay_bias += change;
>> +		pair->discard_flag = 1;
>> +	}
>> +}
>
> Minor warning due being in header and not in C file:
> ../../../include/tst_fuzzy_sync.h:753:13: warning: ‘tst_fzsync_pair_add_bias’ defined but not used [-Wunused-function]
>  static void tst_fzsync_pair_add_bias(struct tst_fzsync_pair *pair, int change)
>
>
> Kind regards,
> Petr

OK, I have added unused attribute to this function for the next version

-- 
Thank you,
Richard.

  reply	other threads:[~2018-09-11  9:14 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-10  8:44 [LTP] [PATCH v2 0/4] New Fuzzy Sync library API Richard Palethorpe
2018-09-10  8:44 ` [LTP] [PATCH v2 1/4] tst_timer: Add nano second conversions Richard Palethorpe
2018-09-10 22:18   ` Petr Vorel
2018-09-11  9:44     ` Richard Palethorpe
2018-09-10  8:44 ` [LTP] [PATCH v2 2/4] fzsync: Simplify API with start/end race calls and limit exec time Richard Palethorpe
2018-09-10 11:46   ` Richard Palethorpe
2018-09-26  9:40   ` Li Wang
2018-10-08 12:32     ` Richard Palethorpe
2018-10-09  8:12       ` Li Wang
2018-10-03 12:57   ` Cyril Hrubis
2018-09-10  8:44 ` [LTP] [PATCH v2 3/4] Convert tests to use fzsync_{start, end}_race API Richard Palethorpe
2018-09-10  8:44 ` [LTP] [PATCH v2 4/4] Add delay bias for difficult races Richard Palethorpe
2018-09-10 22:38   ` Petr Vorel
2018-09-11  9:14     ` Richard Palethorpe [this message]
2018-10-03 11:30       ` Cyril Hrubis
2018-10-03 13:46   ` Cyril Hrubis
2018-10-08  9:52     ` Richard Palethorpe

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