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authorAlexey Dobriyan <adobriyan@openvz.org>2007-02-10 10:45:10 +0100
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-11 19:51:28 +0100
commitb035b6de24932ffd4a2b1c6619a2f5711da6920f (patch)
tree76f43316bf4788c510a1f271064b67ef8e584035 /kernel/sched.c
parent[PATCH] Char: n_r3964, cleanup (diff)
downloadlinux-b035b6de24932ffd4a2b1c6619a2f5711da6920f.tar.xz
linux-b035b6de24932ffd4a2b1c6619a2f5711da6920f.zip
[PATCH] Consolidate default sched_clock()
Use attribute(weak). Signed-off-by: Alexey Dobriyan <adobriyan@openvz.org> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sched.c')
-rw-r--r--kernel/sched.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index cca93cc0dd7d..1cd4ee769e20 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -57,6 +57,16 @@
#include <asm/unistd.h>
/*
+ * Scheduler clock - returns current time in nanosec units.
+ * This is default implementation.
+ * Architectures and sub-architectures can override this.
+ */
+unsigned long long __attribute__((weak)) sched_clock(void)
+{
+ return (unsigned long long)jiffies * (1000000000 / HZ);
+}
+
+/*
* Convert user-nice values [ -20 ... 0 ... 19 ]
* to static priority [ MAX_RT_PRIO..MAX_PRIO-1 ],
* and back.