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sched: domain sysctl fixes: do not crash on allocation failure

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Now that we are calling this at runtime, a more relaxed error path is
suggested.  If an allocation fails, we just register the partial table,
which will show empty directories.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Milton Miller 2007-10-15 17:00:19 +02:00 committed by Ingo Molnar
parent 6382bc90f5
commit ad1cdc1d78
1 changed files with 8 additions and 2 deletions
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10
kernel/sched.c
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@ -5245,8 +5245,6 @@ static struct ctl_table *sd_alloc_ctl_entry(int n)
struct ctl_table *entry =
kcalloc(n, sizeof(struct ctl_table), GFP_KERNEL);
BUG_ON(!entry);
return entry;
}
@ -5279,6 +5277,9 @@ sd_alloc_ctl_domain_table(struct sched_domain *sd)
{
struct ctl_table *table = sd_alloc_ctl_entry(12);
if (table == NULL)
return NULL;
set_table_entry(&table[0], "min_interval", &sd->min_interval,
sizeof(long), 0644, proc_doulongvec_minmax);
set_table_entry(&table[1], "max_interval", &sd->max_interval,
@ -5316,6 +5317,8 @@ static ctl_table *sd_alloc_ctl_cpu_table(int cpu)
for_each_domain(cpu, sd)
domain_num++;
entry = table = sd_alloc_ctl_entry(domain_num + 1);
if (table == NULL)
return NULL;
i = 0;
for_each_domain(cpu, sd) {
@ -5336,6 +5339,9 @@ static void register_sched_domain_sysctl(void)
struct ctl_table *entry = sd_alloc_ctl_entry(cpu_num + 1);
char buf[32];
if (entry == NULL)
return;
sd_ctl_dir[0].child = entry;
for_each_online_cpu(i) {