linux-kernel - Re: status of the Altix mmtimer driver

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Date:   Fri, 26 May 2017 08:05:34 -0500
From:   Dimitri Sivanich <sivanich@....com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Christoph Hellwig <hch@....de>,
        Dimitri Sivanich <sivanich@....com>,
        Nate Zimmer <nzimmer@....com>, Russ Anderson <rja@....com>,
        LKML <linux-kernel@...r.kernel.org>,
        Mike Travis <mike.travis@....com>
Cc:     Dimitri Sivanich <sivanich@....com>
Subject: Re: status of the Altix mmtimer driver

Note that the mmtimer struct can probably be removed from the k_itimer struct
in include/linux/posix-timers.h, just for completeness.

--- a/include/linux/posix-timers.h
+++ b/include/linux/posix-timers.h
@@ -73,12 +73,6 @@ struct k_itimer {
                } real;
                struct cpu_timer_list cpu;
                struct {
-                       unsigned int clock;
-                       unsigned int node;
-                       unsigned long incr;
-                       unsigned long expires;
-               } mmtimer;
-               struct {
                        struct alarm alarmtimer;
                        ktime_t interval;
                } alarm;

On Tue, May 23, 2017 at 07:36:01PM -0500, Dimitri Sivanich wrote:
> Since this is SN2 specific, this can be removed.
> 
> On Tue, May 23, 2017 at 05:27:16PM +0200, Thomas Gleixner wrote:
> > On Tue, 23 May 2017, Christoph Hellwig wrote:
> > 
> > Cc: + Mike
> > 
> > > Hi folks,
> > > 
> > > what's the status of the SGI support for the IA64 SN2-specific
> > > altic mmtimer (drivers/char/mmtimer.c)?  It's the only driver that
> > > register a k_lock outside the core kernel, so if we could get rid of
> > > it because the remaining IA64 user are all on somewhat old distros
> > > anyway it would make our life a whole lot easier.
> > >