mono and mono_raw trace clocks access CLOCK_MONOTONIC and CLOCK_MONOTONIC_RAW clocks for tracing purposes. Add documentation for the same. Signed-off-by: Joel Fernandes <joelaf@xxxxxxxxxx> --- Steven, I skipped adding docs for boot clock as that patch is still being discussed, but please accept documentation for the other clocks you said were missing. I will follow with the boot clock documentation at a later time. Thanks. Documentation/trace/ftrace.txt | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/trace/ftrace.txt b/Documentation/trace/ftrace.txt index 185c39f..32cc1ee 100644 --- a/Documentation/trace/ftrace.txt +++ b/Documentation/trace/ftrace.txt @@ -362,6 +362,14 @@ of ftrace. Here is a list of some of the key files: to correlate events across hypervisor/guest if tb_offset is known. + mono: This uses the fast monotonic clock (CLOCK_MONOTONIC) + which is monotonic and is subject to NTP rate adjustments. + + mono_raw: + This is the raw monotonic clock (CLOCK_MONOTONIC_RAW) + which is montonic but is not subject to any rate adjustments + and ticks at the same rate as the hardware clocksource. + To set a clock, simply echo the clock name into this file. echo global > trace_clock -- 2.8.0.rc3.226.g39d4020 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
