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i386: remove old IRQ balancing debug cruft

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Dead or misnamed CONFIG_BALANCED_IRQ_DEBUG found by Robert P. J. Day.
It's not a Kconfig variable.

Since this debug code is ancient, I suggest to get rid of this
misleading CONFIG_ macro by deleting all of this debug code.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "Robert P. J. Day" <rpjday@mindspring.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Stefan Richter 2007-07-21 17:11:40 +02:00 committed by Linus Torvalds
parent a1dfd851b9
commit edc2cbf496
1 changed files with 2 additions and 22 deletions
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24
arch/i386/kernel/io_apic.c
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@ -353,14 +353,6 @@ static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t cpumask)
# include <linux/slab.h> /* kmalloc() */
# include <linux/timer.h> /* time_after() */
#ifdef CONFIG_BALANCED_IRQ_DEBUG
# define TDprintk(x...) do { printk("<%ld:%s:%d>: ", jiffies, __FILE__, __LINE__); printk(x); } while (0)
# define Dprintk(x...) do { TDprintk(x); } while (0)
# else
# define TDprintk(x...)
# define Dprintk(x...)
# endif
#define IRQBALANCE_CHECK_ARCH -999
#define MAX_BALANCED_IRQ_INTERVAL (5*HZ)
#define MIN_BALANCED_IRQ_INTERVAL (HZ/2)
@ -443,7 +435,7 @@ static inline void balance_irq(int cpu, int irq)
static inline void rotate_irqs_among_cpus(unsigned long useful_load_threshold)
{
int i, j;
Dprintk("Rotating IRQs among CPUs.\n");
for_each_online_cpu(i) {
for (j = 0; j < NR_IRQS; j++) {
if (!irq_desc[j].action)
@ -560,19 +552,11 @@ tryanothercpu:
max_loaded = tmp_loaded; /* processor */
imbalance = (max_cpu_irq - min_cpu_irq) / 2;
Dprintk("max_loaded cpu = %d\n", max_loaded);
Dprintk("min_loaded cpu = %d\n", min_loaded);
Dprintk("max_cpu_irq load = %ld\n", max_cpu_irq);
Dprintk("min_cpu_irq load = %ld\n", min_cpu_irq);
Dprintk("load imbalance = %lu\n", imbalance);
/* if imbalance is less than approx 10% of max load, then
* observe diminishing returns action. - quit
*/
if (imbalance < (max_cpu_irq >> 3)) {
Dprintk("Imbalance too trivial\n");
if (imbalance < (max_cpu_irq >> 3))
goto not_worth_the_effort;
}
tryanotherirq:
/* if we select an IRQ to move that can't go where we want, then
@ -629,9 +613,6 @@ tryanotherirq:
cpus_and(tmp, target_cpu_mask, allowed_mask);
if (!cpus_empty(tmp)) {
Dprintk("irq = %d moved to cpu = %d\n",
selected_irq, min_loaded);
/* mark for change destination */
set_pending_irq(selected_irq, cpumask_of_cpu(min_loaded));
@ -651,7 +632,6 @@ not_worth_the_effort:
*/
balanced_irq_interval = min((long)MAX_BALANCED_IRQ_INTERVAL,
balanced_irq_interval + BALANCED_IRQ_MORE_DELTA);
Dprintk("IRQ worth rotating not found\n");
return;
}