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Re: [PATCH v2 2/2] posix-timers: Exposes DELAYTIMER_MAX constant used to govern overruns
- From: "Carlos O'Donell" <carlos at redhat dot com>
- To: Thomas Gleixner <tglx at linutronix dot de>, Daniel Church <dchurch at andplus dot com>
- Cc: linux-kernel at vger dot kernel dot org, libc-alpha at sourceware dot org
- Date: Sat, 24 Jan 2015 14:36:21 -0500
- Subject: Re: [PATCH v2 2/2] posix-timers: Exposes DELAYTIMER_MAX constant used to govern overruns
- Authentication-results: sourceware.org; auth=none
- References: <[PATCH 0/2] posix-timers: Prevents overrun counter overflow, adds DELAYTIMER_MAX> <1422121737-3686-1-git-send-email-dchurch at andplus dot com> <1422121737-3686-3-git-send-email-dchurch at andplus dot com> <alpine dot DEB dot 2 dot 11 dot 1501242015260 dot 5526 at nanos>
On 01/24/2015 02:20 PM, Thomas Gleixner wrote:
> On Sat, 24 Jan 2015, Daniel Church wrote:
>
>> POSIX.1-2001 specification of timer_getoverrun() supports constant
>> DELAYTIMER_MAX which prevents overflow and caps overrun count. Exposes
>> delaytimer_max value to userland via /proc/sys/kernel/delaytimer_max such
>
> I know that you try to match the posix name, but when looking at the
> prctl w/o knowing about DELAYTIMER_MAX, it's non intuitive.
>
> Something like posixtimer_max_overruns or if you insist on the
> delaytimer_max part, then let us prepend it with posixtimer_ at least.
>
> New prctls require an update of Documentation/sysctl/kernel.txt.
Agreed, the name should be self-explanatory and point at POSIX.
The documentation should be detailed and explain exactly what this
is for, what are valid values, and why you would ever want to change
them.
Cheers,
Carlos.