The following commit has been merged into the sched/core branch of tip:
Commit-ID: 0cd3e59de1f53978873669c7c8225ec13e88c3ae
Gitweb: https://git.kernel.org/tip/0cd3e59de1f53978873669c7c8225ec13e88c3ae
Author: Frederic Weisbecker <frederic@xxxxxxxxxx>
AuthorDate: Mon, 07 Feb 2022 16:59:08 +01:00
Committer: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
CommitterDate: Wed, 16 Feb 2022 15:57:55 +01:00
sched/isolation: Consolidate error handling
Centralize the mask freeing and return value for the error path. This
makes potential leaks more visible.
Signed-off-by: Frederic Weisbecker <frederic@xxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Reviewed-by: Juri Lelli <juri.lelli@xxxxxxxxxx>
Reviewed-by: Phil Auld <pauld@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220207155910.527133-7-frederic@xxxxxxxxxx
---
kernel/sched/isolation.c | 19 +++++++++----------
1 file changed, 9 insertions(+), 10 deletions(-)
diff --git a/kernel/sched/isolation.c b/kernel/sched/isolation.c
index 23085e6..828dace 100644
--- a/kernel/sched/isolation.c
+++ b/kernel/sched/isolation.c
@@ -92,12 +92,12 @@ void __init housekeeping_init(void)
static int __init housekeeping_setup(char *str, enum hk_flags flags)
{
cpumask_var_t non_housekeeping_mask, housekeeping_staging;
+ int err = 0;
alloc_bootmem_cpumask_var(&non_housekeeping_mask);
if (cpulist_parse(str, non_housekeeping_mask) < 0) {
pr_warn("Housekeeping: nohz_full= or isolcpus= incorrect CPU range\n");
- free_bootmem_cpumask_var(non_housekeeping_mask);
- return 0;
+ goto free_non_housekeeping_mask;
}
alloc_bootmem_cpumask_var(&housekeeping_staging);
@@ -119,30 +119,29 @@ static int __init housekeeping_setup(char *str, enum hk_flags flags)
} else {
if (!cpumask_equal(housekeeping_staging, housekeeping_mask)) {
pr_warn("Housekeeping: nohz_full= must match isolcpus=\n");
- free_bootmem_cpumask_var(housekeeping_staging);
- free_bootmem_cpumask_var(non_housekeeping_mask);
- return 0;
+ goto free_housekeeping_staging;
}
}
- free_bootmem_cpumask_var(housekeeping_staging);
-
if ((flags & HK_FLAG_TICK) && !(housekeeping_flags & HK_FLAG_TICK)) {
if (IS_ENABLED(CONFIG_NO_HZ_FULL)) {
tick_nohz_full_setup(non_housekeeping_mask);
} else {
pr_warn("Housekeeping: nohz unsupported."
" Build with CONFIG_NO_HZ_FULL\n");
- free_bootmem_cpumask_var(non_housekeeping_mask);
- return 0;
+ goto free_housekeeping_staging;
}
}
housekeeping_flags |= flags;
+ err = 1;
+free_housekeeping_staging:
+ free_bootmem_cpumask_var(housekeeping_staging);
+free_non_housekeeping_mask:
free_bootmem_cpumask_var(non_housekeeping_mask);
- return 1;
+ return err;
}
static int __init housekeeping_nohz_full_setup(char *str)
|