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Re: [RFC][PATCH] LD_DEBUG option to measure init time
- From: "Carlos O'Donell" <carlos at redhat dot com>
- To: pinskia at gmail dot com
- Cc: Maria Guseva <m dot guseva at samsung dot com>, "libc-alpha at sourceware dot org" <libc-alpha at sourceware dot org>, Yury Gribov <y dot gribov at samsung dot com>, "v dot garbuzov at samsung dot com" <v dot garbuzov at samsung dot com>
- Date: Fri, 31 Jul 2015 00:08:40 -0400
- Subject: Re: [RFC][PATCH] LD_DEBUG option to measure init time
- Authentication-results: sourceware.org; auth=none
- References: <"027601d0cac7$952818c0$bf784a40$ at guseva"@samsung.com> <55BAF138 dot 1070904 at redhat dot com> <6908D9A3-3615-41A8-B8BC-20CCD871AD65 at gmail dot com>
On 07/30/2015 11:58 PM, pinskia@gmail.com wrote:
> Note aarch64 really should be using the virtual timer which is
> optional part of armv8 but not an optional part of the server base.
> It is sad that arm is blocking a glibc patch due to it being an
> optional feature of v8 but is required for servers.
ARM doesn't block this patch at all. Such machines that don't implement
hptiming could fall back to more expensive interfaces like gettimeofday
(vdso) or clock_gettime?
We really should be doing something better for AArhc64, but why not
ask ARM to fix this via Linaro? :-)
c.