[Xen-changelog] [xen-unstable] [POWERPC][XEN] Quiet timebase synchronization at boot.

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Hollis Blanchard <hollisb@xxxxxxxxxx>
# Date 1174514579 18000
# Node ID d5408cc3fba7802fc46d5364b5e9a059eeaa9520
# Parent  59305500d95da83447a11732d0ed758702c11c64
[POWERPC][XEN] Quiet timebase synchronization at boot.
Signed-off-by: Hollis Blanchard <hollisb@xxxxxxxxxx>
---
 xen/arch/powerpc/smp-tbsync.c |   17 ++++++++++++-----
 1 files changed, 12 insertions(+), 5 deletions(-)

diff -r 59305500d95d -r d5408cc3fba7 xen/arch/powerpc/smp-tbsync.c
--- a/xen/arch/powerpc/smp-tbsync.c     Wed Mar 21 17:02:59 2007 -0500
+++ b/xen/arch/powerpc/smp-tbsync.c     Wed Mar 21 17:02:59 2007 -0500
@@ -31,6 +31,13 @@
 #define local_irq_disable()
 
 #define NUM_ITER               300
+
+#undef DEBUG
+#ifdef DEBUG
+#define DBG(fmt...) printk(fmt)
+#else
+#define DBG(fmt...)
+#endif
 
 enum {
        kExit=0, kSetAndTest, kTest
@@ -128,7 +135,7 @@ void __devinit smp_generic_give_timebase
 {
        int i, score, score2, old, min=0, max=5000, offset=1000;
 
-       printk("Synchronizing timebase\n");
+       printk("Synchronizing timebase...\n");
 
        /* if this fails then this kernel won't work anyway... */
        tbsync = kmalloc( sizeof(*tbsync), GFP_KERNEL );
@@ -139,13 +146,13 @@ void __devinit smp_generic_give_timebase
        while (!tbsync->ack)
                barrier();
 
-       printk("Got ack\n");
+       DBG("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 );
+               DBG("score %d, offset %d\n", score, offset );
 
                if( score > 0 )
                        max = offset;
@@ -156,7 +163,7 @@ 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",
+       DBG("Min %d (score %d), Max %d (score %d)\n",
               min, score, max, score2);
        score = abs(score);
        score2 = abs(score2);
@@ -171,7 +178,7 @@ void __devinit smp_generic_give_timebase
                if (score2 <= score || score2 < 20)
                        break;
        }
-       printk("Final offset: %d (%d/%d)\n", offset, score2, NUM_ITER );
+       DBG("Final offset: %d (%d/%d)\n", offset, score2, NUM_ITER );
 
        /* exiting */
        tbsync->cmd = kExit;

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