From: "Chuanxiao.Dong" <chuanxiao.dong@intel.com>
To: cjb@laptop.org
Cc: adrian.hunter@nokia.com, linux-mmc@vger.kernel.org
Subject: [PATCH v1 0/3]mmc: set a suitable max discard sectors value for host controller
Date: Thu, 11 Nov 2010 17:05:02 +0800 [thread overview]
Message-ID: <20101111090502.GA18170@intel.com> (raw)
Hi Chris,
These 3 patches set a suitable max_discard_sectors value for mmc
queue which will be used for ERASE/TRIM. Add Adrian in Cc loop since
he implemented the ERASE/TRIM feature for MMC driver.
patch1: calculated a suitable timeout time for SDHCI host controller.
Each erase cmd should be finished within the timeout time.
patch2: calculated a suitable max_discard_sectors value for mmc
queue. Since some SDHCI host controller cannot process the whole
sectors at one time. In this patch, a new callback get_tmclk in
mmc_host_ops was added to help core layer to calculate the max value.
If this callback was implemented, core layer will calculted a suitable
value. If not, the max_discard_sectors value will be the same as
before.
patch3: implemented get_tmclk callback for SDHCI host controller.
Adrian, hope I can get your comment about these patches as well.
Thanks for your time to review these patches.
Regards
Chuanxiao
reply other threads:[~2010-11-11 9:06 UTC|newest]
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