From cf3242783319c215e3d2e59e293e9c307724cea5 Mon Sep 17 00:00:00 2001 From: Chris Wright Date: Mon, 24 Mar 2008 12:48:22 -0700 Subject: [PATCH] start next 2.6.24 queue with patch for __udivdi3 fix --- queue-2.6.24/series | 1 + ...pec_add_ns-from-being-optimised-away.patch | 32 +++++++++++++++++++ 2 files changed, 33 insertions(+) create mode 100644 queue-2.6.24/series create mode 100644 queue-2.6.24/time-prevent-the-loop-in-timespec_add_ns-from-being-optimised-away.patch diff --git a/queue-2.6.24/series b/queue-2.6.24/series new file mode 100644 index 0000000000..b210f6394e --- /dev/null +++ b/queue-2.6.24/series @@ -0,0 +1 @@ +time-prevent-the-loop-in-timespec_add_ns-from-being-optimised-away.patch diff --git a/queue-2.6.24/time-prevent-the-loop-in-timespec_add_ns-from-being-optimised-away.patch b/queue-2.6.24/time-prevent-the-loop-in-timespec_add_ns-from-being-optimised-away.patch new file mode 100644 index 0000000000..489cbdaa36 --- /dev/null +++ b/queue-2.6.24/time-prevent-the-loop-in-timespec_add_ns-from-being-optimised-away.patch @@ -0,0 +1,32 @@ +From 38332cb98772f5ea757e6486bed7ed0381cb5f98 Mon Sep 17 00:00:00 2001 +From: Segher Boessenkool +Date: Tue, 4 Mar 2008 14:59:54 -0800 +Message-ID: <2d0a357f0803241147o351f9434y696cb33841ffe834@mail.gmail.com> +Subject: time: prevent the loop in timespec_add_ns() from being optimised away + +Since some architectures don't support __udivdi3(). + +Signed-off-by: Segher Boessenkool +Cc: john stultz +Cc: Ingo Molnar +Signed-off-by: Andrew Morton +Signed-off-by: Thomas Gleixner +Cc: Sedat Dilek +Signed-off-by: Chris Wright +--- + include/linux/time.h | 4 ++++ + 1 file changed, 4 insertions(+) + +--- a/include/linux/time.h ++++ b/include/linux/time.h +@@ -173,6 +173,10 @@ static inline void timespec_add_ns(struc + { + ns += a->tv_nsec; + while(unlikely(ns >= NSEC_PER_SEC)) { ++ /* The following asm() prevents the compiler from ++ * optimising this loop into a modulo operation. */ ++ asm("" : "+r"(ns)); ++ + ns -= NSEC_PER_SEC; + a->tv_sec++; + } -- 2.39.5