linux-kernel - [PATCH 0/3] percpu_ida: support to export allocation/free information

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Date:	Tue, 29 Apr 2014 22:53:50 +0800
From:	Ming Lei <tom.leiming@...il.com>
To:	Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org,
	Kent Overstreet <kmo@...erainc.com>
Cc:	Christoph Hellwig <hch@....de>, Shaohua Li <shli@...nel.org>,
	Nicholas Bellinger <nab@...ux-iscsi.org>,
	Nick Swenson <nks@...erainc.com>
Subject: [PATCH 0/3] percpu_ida: support to export allocation/free information

Hi,

These patches support to export percpu_ida allocation/free information
via sysfs, so that percpu_ida performance can be monitored, and
at least two use cases:

- some parameters(such as percpu_max_size) from its users are very
sensitive to performance

- the data is helpful for verifying patches which try to improve
percpu_ida


Thanks,
--
Ming Lei

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