[PATCH v2 13/16] mmc: Documentation: Add sysfs ABI for hpi_time_threshold
From: Venkatraman S <hidden>
Date: 2012-05-03 14:23:12
Also in:
linux-fsdevel, linux-mmc, linux-omap, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
hpi_time_threshold can be set to configure elapsed time in ms, after which an ongoing request will not be preempted. Explain the hpi_time_threhold parameter for MMC devices. Signed-off-by: Venkatraman S <redacted> --- Documentation/ABI/testing/sysfs-devices-mmc | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-devices-mmc b/Documentation/ABI/testing/sysfs-devices-mmc
index 5a50ab6..133dba5 100644
--- a/Documentation/ABI/testing/sysfs-devices-mmc
+++ b/Documentation/ABI/testing/sysfs-devices-mmc@@ -19,3 +19,15 @@ Description: is enabled, this attribute will indicate the size of enhanced data area. If not, this attribute will be -EINVAL. Unit KByte. Format decimal. + +What: /sys/devices/.../mmc_host/mmcX/mmcX:XXXX/hpi_time_threshold +Date: April 2012 +Contact: Venkatraman S <svenkatr@ti.com> +Description: + High Priority Interrupt is a new feature defined in eMMC4.4 + standard. If this feature is enabled, stack needs to decide + till what time since the last issued request is considered + preemptible. This attribute value (in milliseconds) is + used for arriving at the most optimal value for a specific + card. Default is zero, which also disables the feature, as + the request becomes non-preemptible immediately.
--
1.7.10.rc2
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