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authorMatteo Croce <mcroce@redhat.com>2018-07-31 19:03:32 +0300
committerPablo Neira Ayuso <pablo@netfilter.org>2018-08-16 20:36:55 +0300
commit14d32b2525dd3a21c29b0d9edf1748f5dabc1bbc (patch)
treedd9366dfc5a35b2fb889bd4ead02b206b4e228ed /include/linux/jiffies.h
parenta53b42c11815d2357e31a9403ae3950517525894 (diff)
downloadlinux-14d32b2525dd3a21c29b0d9edf1748f5dabc1bbc.tar.xz
jiffies: add utility function to calculate delta in ms
add jiffies_delta_to_msecs() helper func to calculate the delta between two times and eventually 0 if negative. Suggested-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Matteo Croce <mcroce@redhat.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Acked-by: Simon Horman <horms@verge.net.au> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'include/linux/jiffies.h')
-rw-r--r--include/linux/jiffies.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h
index a27cf6652327..fa928242567d 100644
--- a/include/linux/jiffies.h
+++ b/include/linux/jiffies.h
@@ -447,6 +447,11 @@ static inline clock_t jiffies_delta_to_clock_t(long delta)
return jiffies_to_clock_t(max(0L, delta));
}
+static inline unsigned int jiffies_delta_to_msecs(long delta)
+{
+ return jiffies_to_msecs(max(0L, delta));
+}
+
extern unsigned long clock_t_to_jiffies(unsigned long x);
extern u64 jiffies_64_to_clock_t(u64 x);
extern u64 nsec_to_clock_t(u64 x);