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Re: PowerPC: gettimeofday optimization by using IFUNC
- From: Andi Kleen <andi at firstfloor dot org>
- To: Adhemerval Zanella <azanella at linux dot vnet dot ibm dot com>
- Cc: "GNU C. Library" <libc-alpha at sourceware dot org>
- Date: Fri, 22 Feb 2013 12:18:37 -0800
- Subject: Re: PowerPC: gettimeofday optimization by using IFUNC
- References: <5127C775.1050804@linux.vnet.ibm.com>
Adhemerval Zanella <azanella@linux.vnet.ibm.com> writes:
> Hi,
>
> This patch make gettimeofday uses IFUNC and optimizing its call by avoid
> the unnecessary way through glibc's internal __gettimeofday. Any tips,
> advices, comments?
Very nice optimizations. The extra round trip always annoyed me. And
using IFUNC for it is a nice trick. Is it possible to do on x86 too?
--
ak@linux.intel.com -- Speaking for myself only