Re: [RFC PATCH v8 1/9] Restartable sequences system call

On Fri, Aug 19, 2016 at 02:32:13PM -0700, Linus Torvalds wrote:

On Fri, Aug 19, 2016 at 2:19 PM, Paul E. McKenney
[off-list ref] wrote:

quoted

On Fri, Aug 19, 2016 at 01:56:11PM -0700, Andi Kleen wrote:

quoted

malloc is the primary target I believe. Saves lots of memory to keep
caches per CPU rather than per thread.

Agreed, a competent default malloc() in glibc would be a very nice change
from the current state.

I agree that malloc can be a very good target for something like this,
but it is also something that is quite complicated. A general-purpose
allocator that could be used by glibc and has not just the performance
but the debug stuff etc that people inevitably want is a big project.
And then the people who have special needs end up writing their own
allocators anyway, just because they care about certain layout and
access patterns...

Put another way: I'd really like to see some real numbers and use,
rather than "this can be used for.."

No argument here!

							Thanx, Paul