Messages in this thread | | | From | Haiyang Zhang <> | Subject | RE: [PATCH 1/1] net/hyperv: Add flow control based on hi/low watermark | Date | Tue, 27 Mar 2012 22:25:00 +0000 |
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> -----Original Message----- > From: Greg KH [mailto:gregkh@linuxfoundation.org] > Sent: Tuesday, March 27, 2012 6:21 PM > To: Haiyang Zhang > Cc: davem@davemloft.net; netdev@vger.kernel.org; > devel@linuxdriverproject.org; olaf@aepfle.de; linux-kernel@vger.kernel.org > Subject: Re: [PATCH 1/1] net/hyperv: Add flow control based on hi/low > watermark > > On Tue, Mar 27, 2012 at 03:23:07PM -0700, Haiyang Zhang wrote: > > --- a/include/linux/hyperv.h > > +++ b/include/linux/hyperv.h > > @@ -274,6 +274,35 @@ struct hv_ring_buffer_debug_info { > > u32 bytes_avail_towrite; > > }; > > > > +/* Amount of space to write to */ > > +#define BYTES_AVAIL_TO_WRITE(r, w, z) \ > > + (((w) >= (r)) ? ((z) - ((w) - (r))) : ((r) - (w))) > > + > > That's a very bad #define to use in a .h file, please do not do that. > > > + > > +/* > > + * > > + * hv_get_ringbuffer_availbytes() > > + * > > + * Get number of bytes available to read and to write to > > + * for the specified ring buffer > > + */ > > +extern inline void > > +hv_get_ringbuffer_availbytes(struct hv_ring_buffer_info *rbi, > > + u32 *read, u32 *write) > > What does "extern inline" mean? > > Please fix.
Will do.
Thanks, - Haiyang
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