diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace.c | 1 | ||||
| -rw-r--r-- | kernel/trace/trace_clock.c | 10 |
2 files changed, 11 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index f90ca16afcf..8eabfbb8003 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -647,6 +647,7 @@ static struct { { trace_clock_local, "local", 1 }, { trace_clock_global, "global", 1 }, { trace_clock_counter, "counter", 0 }, + { trace_clock_jiffies, "uptime", 1 }, ARCH_TRACE_CLOCKS }; diff --git a/kernel/trace/trace_clock.c b/kernel/trace/trace_clock.c index aa8f5f48dae..26dc348332b 100644 --- a/kernel/trace/trace_clock.c +++ b/kernel/trace/trace_clock.c @@ -57,6 +57,16 @@ u64 notrace trace_clock(void) return local_clock(); } +/* + * trace_jiffy_clock(): Simply use jiffies as a clock counter. + */ +u64 notrace trace_clock_jiffies(void) +{ + u64 jiffy = jiffies - INITIAL_JIFFIES; + + /* Return nsecs */ + return (u64)jiffies_to_usecs(jiffy) * 1000ULL; +} /* * trace_clock_global(): special globally coherent trace clock |