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Code Issues Releases Wiki Activity

smp: Avoid 'setup_max_cpus' namespace collision/shadowing 

bringup_nonboot_cpus() gets passed the 'setup_max_cpus'
variable in init/main.c - which is also the name of the parameter,
shadowing the name.

To reduce confusion and to allow the 'setup_max_cpus' value
to be #defined in the <linux/smp.h> header, use the 'max_cpus'
name for the function parameter name.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
This commit is contained in:
Ingo Molnar 2024-02-27 09:58:15 +01:00
parent 89b0f15f40
commit 4c8a498541
2 changed files with 4 additions and 4 deletions
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2
include/linux/cpu.h
View File

@ -112,7 +112,7 @@ void notify_cpu_starting(unsigned int cpu);
extern void cpu_maps_update_begin(void);
extern void cpu_maps_update_done(void);
int bringup_hibernate_cpu(unsigned int sleep_cpu);
void bringup_nonboot_cpus(unsigned int setup_max_cpus);
void bringup_nonboot_cpus(unsigned int max_cpus);
#else /* CONFIG_SMP */
#define cpuhp_tasks_frozen 0

6
kernel/cpu.c
View File

@ -1909,14 +1909,14 @@ static bool __init cpuhp_bringup_cpus_parallel(unsigned int ncpus)
static inline bool cpuhp_bringup_cpus_parallel(unsigned int ncpus) { return false; }
#endif /* CONFIG_HOTPLUG_PARALLEL */
void __init bringup_nonboot_cpus(unsigned int setup_max_cpus)
void __init bringup_nonboot_cpus(unsigned int max_cpus)
{
/* Try parallel bringup optimization if enabled */
if (cpuhp_bringup_cpus_parallel(setup_max_cpus))
if (cpuhp_bringup_cpus_parallel(max_cpus))
return;
/* Full per CPU serialized bringup */
cpuhp_bringup_mask(cpu_present_mask, setup_max_cpus, CPUHP_ONLINE);
cpuhp_bringup_mask(cpu_present_mask, max_cpus, CPUHP_ONLINE);
}
#ifdef CONFIG_PM_SLEEP_SMP