From mboxrd@z Thu Jan  1 00:00:00 1970
From: Petr Vorel <pvorel@suse.cz>
Date: Mon, 25 Nov 2019 15:28:58 +0100
Subject: [LTP] [PATCH] memcg_lib/memcg_process: Better synchronization
 of signal USR1
In-Reply-To: <20191125131411.GB8703@rei.lan>
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 <365bdf26-4e52-2159-17cd-52f2fb22e7fd@jv-coder.de>
 <20191121183401.GA20889@dell5510> <20191125131411.GB8703@rei.lan>
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To: ltp@lists.linux.it

Hi,

> > No, there is no support for TST_CHECKPOINT in shell.

> Well there is actually. There is a tst_checkpoint helper that calls
> tst_reinit() to map the shared page to be used with futexes and then
> just calls the corresponding wake or wait function.
Great.
Joerg, sorry for being wrong, thanks Cyril for correction.

> And yes it has been used in the cgroup testcases to synchronize C
> helper that allocates memory and shell test that executes it.

Kind regards,
Petr