Re: [PATCH] tile: add clock_gettime support to vDSO

[Chris Metcalf]

On 10/1/2014 5:24 PM, Henrik Austad wrote:
> On Tue, Sep 30, 2014 at 03:29:45PM -0400, Chris Metcalf wrote:
> > >This change adds support for clock_gettime with CLOCK_REALTIME
> > >and CLOCK_MONOTONIC using vDSO.  In addition, with this change
> > >we switch to use seqlocks instead of integer counters.
> > >
> > >We also support the *_COARSE clockid_t, for apps that want speed
> > >but aren't concerned about fine-grained timestamps; this saves
> > >about 20 cycles per call (seehttp://lwn.net/Articles/342018/).
> > >
> > >Signed-off-by: Chris Metcalf<cmetcalf@xxxxxxxxxx>
> What rev is this based on? When I apply it to Linus latest (aad7fb916), it
> fails in arch/tile/kernel/time.c and arch/tile/kernel/vdso/vgettimeofday.c
> (see below)

It's based on the linux-tile tree (on kernel.org under cmetcalf/linux-tile.git), which was last synced up at 3.16-rc7. I'll refresh the tree to pick up Thomas's recent changes that were queued for 3.17.  Thanks.

--
Chris Metcalf, Tilera Corp.
http://www.tilera.com

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