From: Aleksa Sarai <cyphar@cyphar.com>
To: Tejun Heo <tj@kernel.org>
Cc: lizefan@huawei.com, richard@nod.at, linux-kernel@vger.kernel.org,
"Frédéric Weisbecker" <fweisbec@gmail.com>,
cgroups@vger.kernel.org, mingo@redhat.com,
"Peter Zijlstra" <peterz@infradead.org>
Subject: Re: [PATCH v10 1/4] cgroups: use bitmask to filter for_each_subsys
Date: Wed, 13 May 2015 15:44:51 +1000 [thread overview]
Message-ID: <CAOviyah2kjtaRBFRcd3cAb1DeYX11Ks_KVfwXPMXK5BENSqOiA@mail.gmail.com> (raw)
In-Reply-To: <20150426160909.GC1499@htj.duckdns.org>
Hi Tejun,
> Hmmmm... You can either convert all masks to ulong (which is fine) or
> do something like the following.
>
> #define for_each_subsys_which(ss_mask, ss, ssid) \
> unsigned long __tmp_mask = (ss_mask); \
> for_each_set_bit(ssid, &__tmp_mask, CGROUP_SUBSYS_COUNT)\
> if ((ss) = group_subsys[ssid] && false) \
> ; \
> else
I think I'll just do casting and manually make new variables where
required. The above (and similar) doesn't work very well, generates
warnings like crazy and breaks stuff like:
if (...)
for_each_subsys_which(...)
--
Aleksa Sarai (cyphar)
www.cyphar.com
next prev parent reply other threads:[~2015-05-13 5:44 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-19 12:22 [PATCH v10 0/4] cgroups: add pids subsystem Aleksa Sarai
2015-04-19 12:22 ` [PATCH v10 1/4] cgroups: use bitmask to filter for_each_subsys Aleksa Sarai
2015-04-22 15:25 ` Tejun Heo
2015-04-22 15:42 ` Peter Zijlstra
2015-04-22 16:02 ` Tejun Heo
2015-04-26 16:05 ` Aleksa Sarai
2015-04-26 16:09 ` Tejun Heo
2015-05-13 5:44 ` Aleksa Sarai [this message]
2015-05-13 13:50 ` Tejun Heo
2015-04-22 15:30 ` Tejun Heo
2015-04-19 12:22 ` [PATCH v10 2/4] cgroups: replace explicit ss_mask checking with for_each_subsys_which Aleksa Sarai
2015-04-22 15:31 ` Tejun Heo
2015-04-19 12:22 ` [PATCH v10 3/4] cgroups: allow a cgroup subsystem to reject a fork Aleksa Sarai
2015-04-22 15:54 ` Tejun Heo
2015-04-24 13:59 ` Aleksa Sarai
2015-04-24 15:48 ` Tejun Heo
2015-05-14 10:57 ` Aleksa Sarai
2015-05-14 15:08 ` Tejun Heo
2015-04-19 12:22 ` [PATCH v10 4/4] cgroups: implement the PIDs subsystem Aleksa Sarai
2015-04-22 16:29 ` Tejun Heo
2015-04-23 0:43 ` Aleksa Sarai
2015-04-24 15:36 ` Tejun Heo
2015-05-13 17:04 ` Aleksa Sarai
2015-05-13 17:29 ` Tejun Heo
2015-05-13 17:44 ` Aleksa Sarai
2015-05-13 17:47 ` Tejun Heo
2015-05-16 3:59 ` Aleksa Sarai
2015-05-18 1:24 ` Tejun Heo
2015-04-24 14:24 ` Aleksa Sarai
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