From: Tejun Heo <tj@kernel.org>
To: Aleksa Sarai <cyphar@cyphar.com>
Cc: lizefan@huawei.com, mingo@redhat.com, peterz@infradead.org,
richard@nod.at, fweisbec@gmail.com, linux-kernel@vger.kernel.org,
cgroups@vger.kernel.org
Subject: Re: [PATCH v10 1/4] cgroups: use bitmask to filter for_each_subsys
Date: Wed, 22 Apr 2015 11:30:02 -0400 [thread overview]
Message-ID: <20150422153002.GB10738@htj.duckdns.org> (raw)
In-Reply-To: <1429446154-10660-2-git-send-email-cyphar@cyphar.com>
Ooh, just one more thing.
On Sun, Apr 19, 2015 at 10:22:31PM +1000, Aleksa Sarai wrote:
> +/**
> + * for_each_subsys_which - filter for_each_subsys with a bitmask
> + * @ss_mask: the bitmask
> + * @ss: the iteration cursor
> + * @ssid: the index of @ss, CGROUP_SUBSYS_COUNT after reaching the end
> + *
> + * The block will only run for cases where the ssid-th bit (1 << ssid) of
> + * mask is set to 1.
> + */
> +#define for_each_subsys_which(ss_mask, ss, ssid) \
> + for_each_subsys((ss), (ssid)) \
> + if ((ss_mask) & (1 << (ssid)))
> +
This isn't completely consistent but we tend to put the cursors in
front of what's being iterated. e.g.
for_each_css(css, ssid, cgrp)
for_each_set_bit(bit, addr, size)
Following the pattern, for_each_subsys_which() prolly should do
for_each_subsys_which(ss, ssid, ss_mask)
rather than the other way around.
Thanks.
--
tejun
next prev parent reply other threads:[~2015-04-22 15:30 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
2015-05-13 13:50 ` Tejun Heo
2015-04-22 15:30 ` Tejun Heo [this message]
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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