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Re: [Qemu-devel] [PATCH 1/2] timers: Move NANOSECONDS_PER_SECONDS to tim
From: |
Benoît Canet |
Subject: |
Re: [Qemu-devel] [PATCH 1/2] timers: Move NANOSECONDS_PER_SECONDS to timer.h for future reuse |
Date: |
Fri, 5 Sep 2014 14:53:18 +0000 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Fri, Sep 05, 2014 at 03:31:16PM +0100, Peter Maydell wrote:
> On 5 September 2014 15:21, Benoît Canet <address@hidden> wrote:
> > Signed-off-by: Benoît Canet <address@hidden>
> > ---
> > include/qemu/throttle.h | 2 --
> > include/qemu/timer.h | 2 ++
> > 2 files changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/include/qemu/throttle.h b/include/qemu/throttle.h
> > index b890613..1c639d2 100644
> > --- a/include/qemu/throttle.h
> > +++ b/include/qemu/throttle.h
> > @@ -27,8 +27,6 @@
> > #include "qemu-common.h"
> > #include "qemu/timer.h"
> >
> > -#define NANOSECONDS_PER_SECOND 1000000000.0
> > -
> > typedef enum {
> > THROTTLE_BPS_TOTAL,
> > THROTTLE_BPS_READ,
> > diff --git a/include/qemu/timer.h b/include/qemu/timer.h
> > index 5f5210d..70ce891 100644
> > --- a/include/qemu/timer.h
> > +++ b/include/qemu/timer.h
> > @@ -5,6 +5,8 @@
> > #include "qemu-common.h"
> > #include "qemu/notify.h"
> >
> > +#define NANOSECONDS_PER_SECOND 1000000000.0
>
> I was slightly surprised to see this was a floating
> point constant rather than an integer. I wonder if
> we'll get bitten by that in future...
The origin is the throttle code which does a lot of computation on double.
I'll check if throttle works fine with this constants as an integer.
Best regards
Benoît
>
> -- PMM