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authorIngo Molnar <mingo@elte.hu>2008-04-23 09:31:35 +0200
committerIngo Molnar <mingo@elte.hu>2008-05-05 23:56:18 +0200
commit690229a0912ca2fef8b542fe4d8b73acfcdc6e24 (patch)
tree28be1db230f039589650f2b5d46de9e6f5722ef0
parentd7dcdc11cfa6a8860a29b09f985467b89224699d (diff)
sched: make clock sync tunable by architecture code
make time_sync_thresh tunable to architecture code. Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--include/linux/sched.h2
-rw-r--r--kernel/sched.c2
2 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 698b5a4d25a..54c9ca26b7d 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -158,6 +158,8 @@ print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq)
}
#endif
+extern unsigned long long time_sync_thresh;
+
/*
* Task state bitmask. NOTE! These bits are also
* encoded in fs/proc/array.c: get_task_state().
diff --git a/kernel/sched.c b/kernel/sched.c
index 3ac3d7af04a..8f433fedfcb 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -899,7 +899,7 @@ static inline u64 global_rt_runtime(void)
return (u64)sysctl_sched_rt_runtime * NSEC_PER_USEC;
}
-static const unsigned long long time_sync_thresh = 100000;
+unsigned long long time_sync_thresh = 100000;
static DEFINE_PER_CPU(unsigned long long, time_offset);
static DEFINE_PER_CPU(unsigned long long, prev_cpu_time);