cgroup: don't bother to resize pid array

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When we open cgroup.procs, we'll allocate an buffer and store all tasks'
tgid in it, and then duplicate entries will be stripped. If that results
in a much smaller pid list, we'll re-allocate a smaller buffer.

But we've already sucessfully allocated memory and reading the procs
file is a short period and the memory will be freed very soon, so why
bother to re-allocate memory.

Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Li Zefan 2013-03-12 15:36:00 -07:00 • committed by Tejun Heo

parent d7eeac1913

commit 6ee211ad0a

1 changed files with 3 additions and 34 deletions

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kernel/cgroup.c

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