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我刚才跑去问了一下PM方面的专家,下面是答复
drivers' suspend/resume are invoked at two cases:
a) device specific Dx transition, like D0->D3
b) system level sleep request with all drivers forced with a D0->D3 request
For b), normally S3/S4 are in this category. S1 by definition doesn't require due to all device contexts preserved, but at least Linux is lazy and thus reuse same S3 path for S1.
然后是我继续确认一下有没有理解错:
Oops, what does "lazy" here mean? We usually say "lazy" as doing things until they have to be done, such as "demanding page". But here seem the "lazy" means linux doesn't implement S1 path, right?
最后是得到肯定的答复
Yes, Linux treats S1/S3 exactly same.
[ 本帖最后由 zx_wing 于 2008-3-21 15:56 编辑 ] |
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