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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-03 05:08:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-03 05:08:49 +0000
commit76047c0312414915035f4ebbaa533fe3817a21e0 (patch)
tree86f79ba3c1f753b1d39be793455035794fade031 /kernel/sched/isolation.c
parentAdding upstream version 6.8.11. (diff)
downloadlinux-76047c0312414915035f4ebbaa533fe3817a21e0.tar.xz
linux-76047c0312414915035f4ebbaa533fe3817a21e0.zip
Adding upstream version 6.8.12.upstream/6.8.12
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'kernel/sched/isolation.c')
-rw-r--r--kernel/sched/isolation.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/sched/isolation.c b/kernel/sched/isolation.c
index 373d42c707..82e2f7fc7c 100644
--- a/kernel/sched/isolation.c
+++ b/kernel/sched/isolation.c
@@ -109,6 +109,7 @@ static void __init housekeeping_setup_type(enum hk_type type,
static int __init housekeeping_setup(char *str, unsigned long flags)
{
cpumask_var_t non_housekeeping_mask, housekeeping_staging;
+ unsigned int first_cpu;
int err = 0;
if ((flags & HK_FLAG_TICK) && !(housekeeping.flags & HK_FLAG_TICK)) {
@@ -129,7 +130,8 @@ static int __init housekeeping_setup(char *str, unsigned long flags)
cpumask_andnot(housekeeping_staging,
cpu_possible_mask, non_housekeeping_mask);
- if (!cpumask_intersects(cpu_present_mask, housekeeping_staging)) {
+ first_cpu = cpumask_first_and(cpu_present_mask, housekeeping_staging);
+ if (first_cpu >= nr_cpu_ids || first_cpu >= setup_max_cpus) {
__cpumask_set_cpu(smp_processor_id(), housekeeping_staging);
__cpumask_clear_cpu(smp_processor_id(), non_housekeeping_mask);
if (!housekeeping.flags) {
@@ -138,6 +140,9 @@ static int __init housekeeping_setup(char *str, unsigned long flags)
}
}
+ if (cpumask_empty(non_housekeeping_mask))
+ goto free_housekeeping_staging;
+
if (!housekeeping.flags) {
/* First setup call ("nohz_full=" or "isolcpus=") */
enum hk_type type;