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| author | Frederic Weisbecker <frederic@kernel.org> | 2022-02-07 16:59:08 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-02-16 15:57:55 +0100 |
| commit | 0cd3e59de1f53978873669c7c8225ec13e88c3ae (patch) | |
| tree | 3ede1a9e989a9c46df41890166e20b91228d53ac /kernel/sched/isolation.c | |
| parent | 6367b600e31c6b211eadee7bf7f4ed8c755e9176 (diff) | |
| download | linux-0cd3e59de1f53978873669c7c8225ec13e88c3ae.tar.gz | |
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@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Juri Lelli <juri.lelli@redhat.com> Reviewed-by: Phil Auld <pauld@redhat.com> Link: https://lore.kernel.org/r/20220207155910.527133-7-frederic@kernel.org
Diffstat (limited to 'kernel/sched/isolation.c')
| -rw-r--r-- | kernel/sched/isolation.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/kernel/sched/isolation.c b/kernel/sched/isolation.c index 23085e665faa..828dacec483e 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) |