Re: [PATCH] [man-pages] adjtimex.2: document clock_adjtime

On Tue, Nov 21, 2017 at 09:06:37AM +0100, Arnd Bergmann wrote:

I copied that line from clock_gettime() man page. I suppose we want to
fix change this in both pages, right? Any suggestions for a good way to
express your explanation in the man page? I suppose we don't want to
go into details of the implementation there but still capture the possible
corner cases.

Dynamic clockids are a Linux specific extension.  This should be
explained with a paragraph or two on the gettime man page, along with
an example using the macros.

	#define CLOCKFD 3
	#define FD_TO_CLOCKID(fd)	((~(clockid_t) (fd) << 3) | CLOCKFD)
	#define CLOCKID_TO_FD(clk)	((unsigned int) ~((clk) >> 3))

Then, the adjtimex page can say, see gettime.

Let me try to come up with a text over the (USA) holiday weekend.

Thanks,
Richard