From: Arun Sharma <asharma@fb.com>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <peterz@infradead.org>,
Kumar Sundararajan <kumar@fb.com>, <linux-kernel@vger.kernel.org>,
john stultz <johnstul@us.ibm.com>,
Richard Cochran <richardcochran@gmail.com>
Subject: Re: [PATCH 1/4] Add clock_gettime_ns syscall
Date: Wed, 28 Dec 2011 16:19:05 -0800 [thread overview]
Message-ID: <4EFBB1F9.5050506@fb.com> (raw)
In-Reply-To: <CALCETrW+9OoEQnP1+9MJX+JO5Ch42QhUeo8i=k9YdaCwWhg=Xw@mail.gmail.com>
On 12/28/11 3:42 PM, Andy Lutomirski wrote:
> Something like:
>
> u64 __vdso_clock_gettime_ns(clock_t clockid, struct timens_extra *extra)
> {
> extra->padding = 0;
> return<the time>;
> }
>
>
> might be okay.
I think you want s64 as the return type (for both 32 and 64 bit). This
is what I was trying to suggest as well.
-Arun (Clicks the virtually non-existent like button)
next prev parent reply other threads:[~2011-12-29 0:19 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-25 16:50 [PATCH 0/4] clock_gettime_ns and x86-64 optimizations Andy Lutomirski
2011-12-25 16:51 ` [PATCH 1/4] Add clock_gettime_ns syscall Andy Lutomirski
2011-12-27 7:25 ` Richard Cochran
2011-12-28 19:02 ` Arun Sharma
[not found] ` <CALCETrVz1ADNxeLzPmeWXPU5ApfKURH2vnged2A2Vng8-hUxcw@mail.gmail.com>
2011-12-28 22:45 ` Arun Sharma
2011-12-28 23:42 ` Andy Lutomirski
2011-12-29 0:19 ` Arun Sharma [this message]
2011-12-25 16:51 ` [PATCH 2/4] x86-64: Add __vdso_clock_gettime_ns vsyscall Andy Lutomirski
2011-12-25 16:51 ` [PATCH 3/4] x86-64: Optimize vdso clock_gettime Andy Lutomirski
2011-12-25 16:51 ` [PATCH 4/4] x86-64: Inline vdso clock_gettime helpers Andy Lutomirski
2011-12-27 7:46 ` [PATCH 0/4] clock_gettime_ns and x86-64 optimizations Richard Cochran
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