From: Jes Sorensen <jes@trained-monkey.org>
I'd like to propose the following for 2.6.1-mm/2.6.2. On systems with a
large number of CPUs the number of printk's flowing by for each CPU
booting starts becoming a real console hog.
The following patch eliminates a couple of them (already sent a patch to
David for the ia64 specific ones) as well as changes the
"Building zonelist : X" in "Built Y zonelists". IMHO it doesn't make any
sense to print for each zonelist since it's run in a for loop running
from 0 to Y-1 anyway.
The patch nukes a few new printk's that were introduced with the
scheduler changes to the NUMA code in -mm3, if these are still needed
then I won't fight for that part of the patch.
---
init/main.c | 2 --
kernel/cpu.c | 1 -
kernel/sched.c | 4 ----
mm/page_alloc.c | 2 +-
4 files changed, 1 insertion(+), 8 deletions(-)
diff -puN init/main.c~nuke-noisy-printks init/main.c
--- 25/init/main.c~nuke-noisy-printks 2004-01-19 13:15:16.000000000 -0800
+++ 25-akpm/init/main.c 2004-01-19 13:15:16.000000000 -0800
@@ -346,13 +346,11 @@ static void __init smp_init(void)
if (num_online_cpus() >= max_cpus)
break;
if (cpu_possible(i) && !cpu_online(i)) {
- printk("Bringing up %i\n", i);
cpu_up(i);
}
}
/* Any cleanup work */
- printk("CPUS done %u\n", max_cpus);
smp_cpus_done(max_cpus);
#if 0
/* Get other processors into their bootup holding patterns. */
diff -puN kernel/cpu.c~nuke-noisy-printks kernel/cpu.c
--- 25/kernel/cpu.c~nuke-noisy-printks 2004-01-19 13:15:16.000000000 -0800
+++ 25-akpm/kernel/cpu.c 2004-01-19 13:15:16.000000000 -0800
@@ -55,7 +55,6 @@ int __devinit cpu_up(unsigned int cpu)
BUG();
/* Now call notifier in preparation. */
- printk("CPU %u IS NOW UP!\n", cpu);
notifier_call_chain(&cpu_chain, CPU_ONLINE, hcpu);
out_notify:
diff -puN kernel/sched.c~nuke-noisy-printks kernel/sched.c
--- 25/kernel/sched.c~nuke-noisy-printks 2004-01-19 13:15:16.000000000 -0800
+++ 25-akpm/kernel/sched.c 2004-01-19 13:15:16.000000000 -0800
@@ -3246,8 +3246,6 @@ static void __init arch_init_sched_domai
if (cpus_empty(nodemask))
continue;
- printk(KERN_INFO "NODE%d\n", i);
-
node->cpumask = nodemask;
for_each_cpu_mask(j, node->cpumask) {
@@ -3256,8 +3254,6 @@ static void __init arch_init_sched_domai
cpus_clear(cpu->cpumask);
cpu_set(j, cpu->cpumask);
- printk(KERN_INFO "CPU%d\n", j);
-
if (!first_cpu)
first_cpu = cpu;
if (last_cpu)
diff -puN mm/page_alloc.c~nuke-noisy-printks mm/page_alloc.c
--- 25/mm/page_alloc.c~nuke-noisy-printks 2004-01-19 13:15:16.000000000 -0800
+++ 25-akpm/mm/page_alloc.c 2004-01-19 13:15:16.000000000 -0800
@@ -1080,7 +1080,6 @@ static void __init build_zonelists(pg_da
int i, j, k, node, local_node;
local_node = pgdat->node_id;
- printk("Building zonelist for node : %d\n", local_node);
for (i = 0; i < MAX_NR_ZONES; i++) {
struct zonelist *zonelist;
@@ -1118,6 +1117,7 @@ void __init build_all_zonelists(void)
for(i = 0 ; i < numnodes ; i++)
build_zonelists(NODE_DATA(i));
+ printk("Built %i zonelists\n", numnodes);
}
/*
_