When no HW method is provided to sync the timebase, linux uses
a software algorithm.
The code for that is very verbose using straight printk's without
log level. A lot of this is mostly useless unless you want to debug
the process, and we didn't have any problem with it for years anyway
so this turns the bunch of them into pr_debug.
Signed-off-by: Benjamin Herrenschmidt <[EMAIL PROTECTED]>
---
arch/powerpc/kernel/smp-tbsync.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
--- linux-work.orig/arch/powerpc/kernel/smp-tbsync.c 2008-10-15
14:42:24.000000000 +1100
+++ linux-work/arch/powerpc/kernel/smp-tbsync.c 2008-10-15 15:23:03.000000000
+1100
@@ -113,7 +113,7 @@ void __devinit smp_generic_give_timebase
{
int i, score, score2, old, min=0, max=5000, offset=1000;
- printk("Synchronizing timebase\n");
+ pr_debug("Software timebase sync\n");
/* if this fails then this kernel won't work anyway... */
tbsync = kzalloc( sizeof(*tbsync), GFP_KERNEL );
@@ -123,13 +123,13 @@ void __devinit smp_generic_give_timebase
while (!tbsync->ack)
barrier();
- printk("Got ack\n");
+ pr_debug("Got ack\n");
/* binary search */
for (old = -1; old != offset ; offset = (min+max) / 2) {
score = start_contest(kSetAndTest, offset, NUM_ITER);
- printk("score %d, offset %d\n", score, offset );
+ pr_debug("score %d, offset %d\n", score, offset );
if( score > 0 )
max = offset;
@@ -140,8 +140,8 @@ void __devinit smp_generic_give_timebase
score = start_contest(kSetAndTest, min, NUM_ITER);
score2 = start_contest(kSetAndTest, max, NUM_ITER);
- printk("Min %d (score %d), Max %d (score %d)\n",
- min, score, max, score2);
+ pr_debug("Min %d (score %d), Max %d (score %d)\n",
+ min, score, max, score2);
score = abs(score);
score2 = abs(score2);
offset = (score < score2) ? min : max;
@@ -155,7 +155,7 @@ void __devinit smp_generic_give_timebase
if (score2 <= score || score2 < 20)
break;
}
- printk("Final offset: %d (%d/%d)\n", offset, score2, NUM_ITER );
+ pr_debug("Final offset: %d (%d/%d)\n", offset, score2, NUM_ITER );
/* exiting */
tbsync->cmd = kExit;
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