Messages in this thread | | | Date | Mon, 1 Nov 2010 09:08:42 -0400 | From | Mathieu Desnoyers <> | Subject | Re: [PATCH] Optimize relay_alloc_page_array() slightly by using vzalloc rather than vmalloc and memset |
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* Jens Axboe (axboe@kernel.dk) 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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