Messages in this thread | | | Date | Mon, 01 Nov 2010 09:34:30 -0400 | From | Jens Axboe <> | Subject | Re: [PATCH] Optimize relay_alloc_page_array() slightly by using vzalloc rather than vmalloc and memset |
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On 2010-11-01 09:08, Mathieu Desnoyers wrote: > * 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.
Sure, I'm open to such a solution as long as it doesn't slow anything down for blktrace (primary concern, certainly) and retains feature parity. I'm not married to relayfs, it's just what was available easily when I added blktrace originally.
-- Jens Axboe
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