aboutsummaryrefslogtreecommitdiff
path: root/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'kernel')
-rw-r--r--kernel/sched.c95
1 files changed, 55 insertions, 40 deletions
diff --git a/kernel/sched.c b/kernel/sched.c
index 48e35c91632..8a0afb97af7 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -466,7 +466,8 @@ static int show_schedstat(struct seq_file *seq, void *v)
seq_printf(seq, "domain%d %s", dcnt++, mask_str);
for (itype = SCHED_IDLE; itype < MAX_IDLE_TYPES;
itype++) {
- seq_printf(seq, " %lu %lu %lu %lu %lu %lu %lu %lu",
+ seq_printf(seq, " %lu %lu %lu %lu %lu %lu %lu "
+ "%lu",
sd->lb_cnt[itype],
sd->lb_balanced[itype],
sd->lb_failed[itype],
@@ -476,11 +477,13 @@ static int show_schedstat(struct seq_file *seq, void *v)
sd->lb_nobusyq[itype],
sd->lb_nobusyg[itype]);
}
- seq_printf(seq, " %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
+ seq_printf(seq, " %lu %lu %lu %lu %lu %lu %lu %lu %lu"
+ " %lu %lu %lu\n",
sd->alb_cnt, sd->alb_failed, sd->alb_pushed,
sd->sbe_cnt, sd->sbe_balanced, sd->sbe_pushed,
sd->sbf_cnt, sd->sbf_balanced, sd->sbf_pushed,
- sd->ttwu_wake_remote, sd->ttwu_move_affine, sd->ttwu_move_balance);
+ sd->ttwu_wake_remote, sd->ttwu_move_affine,
+ sd->ttwu_move_balance);
}
preempt_enable();
#endif
@@ -1454,7 +1457,9 @@ static int try_to_wake_up(struct task_struct *p, unsigned int state, int sync)
if (this_sd->flags & SD_WAKE_AFFINE) {
unsigned long tl = this_load;
- unsigned long tl_per_task = cpu_avg_load_per_task(this_cpu);
+ unsigned long tl_per_task;
+
+ tl_per_task = cpu_avg_load_per_task(this_cpu);
/*
* If sync wakeup then subtract the (maximum possible)
@@ -2487,18 +2492,21 @@ small_imbalance:
pwr_now /= SCHED_LOAD_SCALE;
/* Amount of load we'd subtract */
- tmp = busiest_load_per_task*SCHED_LOAD_SCALE/busiest->cpu_power;
+ tmp = busiest_load_per_task * SCHED_LOAD_SCALE /
+ busiest->cpu_power;
if (max_load > tmp)
pwr_move += busiest->cpu_power *
min(busiest_load_per_task, max_load - tmp);
/* Amount of load we'd add */
- if (max_load*busiest->cpu_power <
- busiest_load_per_task*SCHED_LOAD_SCALE)
- tmp = max_load*busiest->cpu_power/this->cpu_power;
+ if (max_load * busiest->cpu_power <
+ busiest_load_per_task * SCHED_LOAD_SCALE)
+ tmp = max_load * busiest->cpu_power / this->cpu_power;
else
- tmp = busiest_load_per_task*SCHED_LOAD_SCALE/this->cpu_power;
- pwr_move += this->cpu_power*min(this_load_per_task, this_load + tmp);
+ tmp = busiest_load_per_task * SCHED_LOAD_SCALE /
+ this->cpu_power;
+ pwr_move += this->cpu_power *
+ min(this_load_per_task, this_load + tmp);
pwr_move /= SCHED_LOAD_SCALE;
/* Move if we gain throughput */
@@ -3366,7 +3374,8 @@ void fastcall add_preempt_count(int val)
/*
* Spinlock count overflowing soon?
*/
- DEBUG_LOCKS_WARN_ON((preempt_count() & PREEMPT_MASK) >= PREEMPT_MASK-10);
+ DEBUG_LOCKS_WARN_ON((preempt_count() & PREEMPT_MASK) >=
+ PREEMPT_MASK - 10);
}
EXPORT_SYMBOL(add_preempt_count);
@@ -5439,16 +5448,19 @@ static void sched_domain_debug(struct sched_domain *sd, int cpu)
if (!(sd->flags & SD_LOAD_BALANCE)) {
printk("does not load-balance\n");
if (sd->parent)
- printk(KERN_ERR "ERROR: !SD_LOAD_BALANCE domain has parent");
+ printk(KERN_ERR "ERROR: !SD_LOAD_BALANCE domain"
+ " has parent");
break;
}
printk("span %s\n", str);
if (!cpu_isset(cpu, sd->span))
- printk(KERN_ERR "ERROR: domain->span does not contain CPU%d\n", cpu);
+ printk(KERN_ERR "ERROR: domain->span does not contain "
+ "CPU%d\n", cpu);
if (!cpu_isset(cpu, group->cpumask))
- printk(KERN_ERR "ERROR: domain->groups does not contain CPU%d\n", cpu);
+ printk(KERN_ERR "ERROR: domain->groups does not contain"
+ " CPU%d\n", cpu);
printk(KERN_DEBUG);
for (i = 0; i < level + 2; i++)
@@ -5463,7 +5475,8 @@ static void sched_domain_debug(struct sched_domain *sd, int cpu)
if (!group->cpu_power) {
printk("\n");
- printk(KERN_ERR "ERROR: domain->cpu_power not set\n");
+ printk(KERN_ERR "ERROR: domain->cpu_power not "
+ "set\n");
}
if (!cpus_weight(group->cpumask)) {
@@ -5486,15 +5499,17 @@ static void sched_domain_debug(struct sched_domain *sd, int cpu)
printk("\n");
if (!cpus_equal(sd->span, groupmask))
- printk(KERN_ERR "ERROR: groups don't span domain->span\n");
+ printk(KERN_ERR "ERROR: groups don't span "
+ "domain->span\n");
level++;
sd = sd->parent;
+ if (!sd)
+ continue;
- if (sd) {
- if (!cpus_subset(groupmask, sd->span))
- printk(KERN_ERR "ERROR: parent span is not a superset of domain->span\n");
- }
+ if (!cpus_subset(groupmask, sd->span))
+ printk(KERN_ERR "ERROR: parent span is not a superset "
+ "of domain->span\n");
} while (sd);
}
@@ -5812,8 +5827,9 @@ __setup("max_cache_size=", setup_max_cache_size);
*/
static void touch_cache(void *__cache, unsigned long __size)
{
- unsigned long size = __size/sizeof(long), chunk1 = size/3,
- chunk2 = 2*size/3;
+ unsigned long size = __size / sizeof(long);
+ unsigned long chunk1 = size / 3;
+ unsigned long chunk2 = 2 * size / 3;
unsigned long *cache = __cache;
int i;
@@ -5922,11 +5938,11 @@ measure_cost(int cpu1, int cpu2, void *cache, unsigned int size)
*/
measure_one(cache, size, cpu1, cpu2);
for (i = 0; i < ITERATIONS; i++)
- cost1 += measure_one(cache, size - i*1024, cpu1, cpu2);
+ cost1 += measure_one(cache, size - i * 1024, cpu1, cpu2);
measure_one(cache, size, cpu2, cpu1);
for (i = 0; i < ITERATIONS; i++)
- cost1 += measure_one(cache, size - i*1024, cpu2, cpu1);
+ cost1 += measure_one(cache, size - i * 1024, cpu2, cpu1);
/*
* (We measure the non-migrating [cached] cost on both
@@ -5936,17 +5952,17 @@ measure_cost(int cpu1, int cpu2, void *cache, unsigned int size)
measure_one(cache, size, cpu1, cpu1);
for (i = 0; i < ITERATIONS; i++)
- cost2 += measure_one(cache, size - i*1024, cpu1, cpu1);
+ cost2 += measure_one(cache, size - i * 1024, cpu1, cpu1);
measure_one(cache, size, cpu2, cpu2);
for (i = 0; i < ITERATIONS; i++)
- cost2 += measure_one(cache, size - i*1024, cpu2, cpu2);
+ cost2 += measure_one(cache, size - i * 1024, cpu2, cpu2);
/*
* Get the per-iteration migration cost:
*/
- do_div(cost1, 2*ITERATIONS);
- do_div(cost2, 2*ITERATIONS);
+ do_div(cost1, 2 * ITERATIONS);
+ do_div(cost2, 2 * ITERATIONS);
return cost1 - cost2;
}
@@ -5984,7 +6000,7 @@ static unsigned long long measure_migration_cost(int cpu1, int cpu2)
*/
cache = vmalloc(max_size);
if (!cache) {
- printk("could not vmalloc %d bytes for cache!\n", 2*max_size);
+ printk("could not vmalloc %d bytes for cache!\n", 2 * max_size);
return 1000000; /* return 1 msec on very small boxen */
}
@@ -6009,7 +6025,8 @@ static unsigned long long measure_migration_cost(int cpu1, int cpu2)
avg_fluct = (avg_fluct + fluct)/2;
if (migration_debug)
- printk("-> [%d][%d][%7d] %3ld.%ld [%3ld.%ld] (%ld): (%8Ld %8Ld)\n",
+ printk("-> [%d][%d][%7d] %3ld.%ld [%3ld.%ld] (%ld): "
+ "(%8Ld %8Ld)\n",
cpu1, cpu2, size,
(long)cost / 1000000,
((long)cost / 100000) % 10,
@@ -6104,20 +6121,18 @@ static void calibrate_migration_costs(const cpumask_t *cpu_map)
-1
#endif
);
- if (system_state == SYSTEM_BOOTING) {
- if (num_online_cpus() > 1) {
- printk("migration_cost=");
- for (distance = 0; distance <= max_distance; distance++) {
- if (distance)
- printk(",");
- printk("%ld", (long)migration_cost[distance] / 1000);
- }
- printk("\n");
+ if (system_state == SYSTEM_BOOTING && num_online_cpus() > 1) {
+ printk("migration_cost=");
+ for (distance = 0; distance <= max_distance; distance++) {
+ if (distance)
+ printk(",");
+ printk("%ld", (long)migration_cost[distance] / 1000);
}
+ printk("\n");
}
j1 = jiffies;
if (migration_debug)
- printk("migration: %ld seconds\n", (j1-j0)/HZ);
+ printk("migration: %ld seconds\n", (j1-j0) / HZ);
/*
* Move back to the original CPU. NUMA-Q gets confused
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 10:23:50 +0000