linux-kernel - Re: 2.6.23-rc3-mm1 - vdso and gettimeofday issues with glibc

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Message-Id: <200709011207.58201.ak@suse.de>
Date:	Sat, 1 Sep 2007 12:07:57 +0200
From:	Andi Kleen <ak@...e.de>
To:	Chuck Ebbert <cebbert@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, Valdis.Kletnieks@...edu,
	jakub@...hat.com, Ulrich Drepper <drepper@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: Re: 2.6.23-rc3-mm1 - vdso and gettimeofday issues with glibc


>         write_seqlock_irqsave(&vsyscall_gtod_data.lock, flags);
>         /* copy vsyscall data */
>         vsyscall_gtod_data.clock.vread = clock->vread;
>         vsyscall_gtod_data.clock.cycle_last = clock->cycle_last;
>         vsyscall_gtod_data.clock.mask = clock->mask;
>         vsyscall_gtod_data.clock.mult = clock->mult;
>         vsyscall_gtod_data.clock.shift = clock->shift;
>         vsyscall_gtod_data.wall_time_sec = wall_time->tv_sec;
>         vsyscall_gtod_data.wall_time_nsec = wall_time->tv_nsec;  <===
>         vsyscall_gtod_data.sys_tz = sys_tz;
>         vsyscall_gtod_data.wall_time_nsec = wall_time->tv_nsec;  <===

Must have been a (harmless) merging mistake, but I bet gcc optimizes it out
anyways.

-Andi
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