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| author | Paul E. McKenney <paul.mckenney@linaro.org> | 2012-06-24 10:15:02 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2012-07-02 12:34:43 -0700 |
| commit | 9d2ad24306f2fafc3612e5a216aab31f9e56e879 (patch) | |
| tree | 6ced8145e842e29aaedda3d9453c74b6f0c92b4f /kernel/time | |
| parent | 4fa3b6cb1bc8c14b81b4c8ffdfd3f2500a7e9367 (diff) | |
| download | lwn-9d2ad24306f2fafc3612e5a216aab31f9e56e879.tar.gz lwn-9d2ad24306f2fafc3612e5a216aab31f9e56e879.zip | |
rcu: Make RCU_FAST_NO_HZ respect nohz= boot parameter
If the nohz= boot parameter disables nohz, then RCU_FAST_NO_HZ needs to
also disable itself. This commit therefore checks for tick_nohz_enabled
being zero, disabling rcu_prepare_for_idle() if so. This commit assumes
that tick_nohz_enabled can change at runtime: If this is not the case,
then a simpler approach suffices.
Signed-off-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/tick-sched.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 869997833928..66ff07f6184c 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -105,7 +105,7 @@ static ktime_t tick_init_jiffy_update(void) /* * NO HZ enabled ? */ -static int tick_nohz_enabled __read_mostly = 1; +int tick_nohz_enabled __read_mostly = 1; /* * Enable / Disable tickless mode |