[lkml]   [2011]   [Oct]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Subject[Question] PM-QoS: PM_QOS_CPU_DMA_LATENCY == interrupt latency?

Looks like it is a bit difficult to understand PM_QOS_CPU_DMA_LATENCY
from the words' meaning.

After searching from google, I don't find some useful information about
the root cause for introducing PM_QOS_CPU_DMA_LATENCY. I understand
it is very similar to interrupt latency. Also from the comment for
omap_pm_set_max_mpu_wakeup_lat in file[1], the description is basically same
with interrupt latency.

From comments of pm_qos_add_request usages in drivers, it can be understood
as interrupt latency too, IMO.

So, could we think that PM_QOS_CPU_DMA_LATENCY is interrupt latency?

[1], arch/arm/plat-omap/include/plat/omap-pm.h

Ming Lei

 \ /
  Last update: 2011-10-10 16:33    [W:0.084 / U:2.540 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site