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authorDavid S. Miller <davem@davemloft.net>2014-08-05 18:57:18 -0700
committerDavid S. Miller <davem@davemloft.net>2014-08-05 18:57:18 -0700
commite9011d086674caeedb0ffb6eb5b8bc5920821df3 (patch)
treeed5d06353d8dc1fa5f6da349808f8345ca2291a5 /kernel/trace/trace_clock.c
parentcfcfe22256d5a8a14924a1145d56017b043b554f (diff)
parentc78f77e20d2ba5d4d5e478e85a6fb42556893e2d (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Conflicts: arch/sparc/mm/init_64.c Conflict was simple non-overlapping additions. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/trace/trace_clock.c')
-rw-r--r--kernel/trace/trace_clock.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/kernel/trace/trace_clock.c b/kernel/trace/trace_clock.c
index 26dc348332b7..57b67b1f24d1 100644
--- a/kernel/trace/trace_clock.c
+++ b/kernel/trace/trace_clock.c
@@ -59,13 +59,14 @@ u64 notrace trace_clock(void)
/*
* trace_jiffy_clock(): Simply use jiffies as a clock counter.
+ * Note that this use of jiffies_64 is not completely safe on
+ * 32-bit systems. But the window is tiny, and the effect if
+ * we are affected is that we will have an obviously bogus
+ * timestamp on a trace event - i.e. not life threatening.
*/
u64 notrace trace_clock_jiffies(void)
{
- u64 jiffy = jiffies - INITIAL_JIFFIES;
-
- /* Return nsecs */
- return (u64)jiffies_to_usecs(jiffy) * 1000ULL;
+ return jiffies_64_to_clock_t(jiffies_64 - INITIAL_JIFFIES);
}
/*