On Wed, 31 Jan 2024 14:47:31 +0000
David Howells [off-list ref] wrote:

Hi Steven,

Hi David,

Sorry, I just noticed this email as it was buried in other unread emails :-p

I have a tracepoint in AF_RXRPC that displays information about a timeout I'm
going to set.  I have the timeout in a ktime_t as an absolute time.  Is there
a way to display this in the trace output such that it looks like a trace
timestamp and can be (roughly) correlated with the displayed timestamps?

Have you tried the other clocks?

	{ ktime_get_mono_fast_ns,	"mono",		1 },
	{ ktime_get_raw_fast_ns,	"mono_raw",	1 },
	{ ktime_get_boot_fast_ns,	"boot",		1 },

The above are the functions used for the tracing timestamps.

-- Steve

I tried subtracting ktime_get_read() - ktime_get_boottime() from it and
displaying the result, but it looked about one and a bit seconds out from the
trace timestamp.