Messages in this thread Patch in this message | | | Date | Sun, 22 Jun 2008 13:06:38 -0700 | From | "Paul E. McKenney" <> | Subject | [PATCH -tip-rcu] Make rcutorture more vicious: make quiescent rcutorture less power-hungry |
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This patch makes the non-module rcutorture a bit more friendly to the power-conservation code. This is a rather simple-minded approach. More sophisticated approaches would get rid of the rcutorture tasks while rcutorture execution was suppressed, but attempts thus far to do this have not gone well -- calling rcu_torture_init() from a /proc callout results in oopses.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> ---
rcutorture.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff -urpNa -X dontdiff linux-2.6.26-rc4-rcut2-proc/kernel/rcutorture.c linux-2.6.26-rc4-rcut3-procq/kernel/rcutorture.c --- linux-2.6.26-rc4-rcut2-proc/kernel/rcutorture.c 2008-06-22 10:29:04.000000000 -0700 +++ linux-2.6.26-rc4-rcut3-procq/kernel/rcutorture.c 2008-06-22 12:20:10.000000000 -0700 @@ -196,7 +196,10 @@ static void rcu_stutter_wait(void) { while (stutter_pause_test || !rcutorture_runnable) - schedule_timeout_interruptible(1); + if (rcutorture_runnable) + schedule_timeout_interruptible(1); + else + schedule_timeout_interruptible(HZ); } /*
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