Re: [PATCH] Optimize relay_alloc_page_array() slightly by usingvzalloc rather than vmalloc and memset

[Mathieu Desnoyers]

* Jens Axboe (axboe@xxxxxxxxx) wrote:
> On 2010-10-30 17:47, Mathieu Desnoyers wrote:
> > BLK_DEV_IO_TRACE seems to still select RELAY. Has it completed its
> > transition to either Ftrace or Perf ? Depending on Jens, moving blktrace
> > relay dependency to the Generic Ring Buffer Library might be a good
> > option to consider.
> 
> The blktrace user bits is still (by far) the most wide spread way that
> blktrace is used in the field, and those still rely on relayfs. So no,
> we can't kill it now.

What I am proposing is that the Generic Ring Buffer Library could
replace relayfs without changing any of the interfaces blktrace exposes
to user-space. Indeed, I would not remove relayfs unless there was a
replacement.

Thanks,

Mathieu


-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
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