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A small boring set of cleanups for the SMP and CPU hotplug code.

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Merge tag 'smp-core-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull cpu core updates from Thomas Gleixner:
 "A small boring set of cleanups for the SMP and CPU hotplug code"

* tag 'smp-core-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  cpu: Remove stray semicolon
  smp: Make __smp_processor_id() 0-argument macro
  cpu: Mark cpu_possible_mask as __ro_after_init
  kernel/cpu: Convert snprintf() to sysfs_emit()
  cpu/hotplug: Delete an extraneous kernel-doc description
This commit is contained in:
Linus Torvalds 2024-03-11 14:14:09 -07:00
commit 397935e3dd
2 changed files with 5 additions and 6 deletions
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2
include/linux/smp.h
View File

@ -261,7 +261,7 @@ static inline int get_boot_cpu_id(void)
* regular asm read for the stable.
*/
#ifndef __smp_processor_id
#define __smp_processor_id(x) raw_smp_processor_id(x)
#define __smp_processor_id() raw_smp_processor_id()
#endif
#ifdef CONFIG_DEBUG_PREEMPT

9
kernel/cpu.c
View File

@ -54,7 +54,6 @@
* @rollback: Perform a rollback
* @single: Single callback invocation
* @bringup: Single callback bringup or teardown selector
* @cpu: CPU number
* @node: Remote CPU node; for multi-instance, do a
* single entry callback for install/remove
* @last: For multi-instance rollback, remember how far we got
@ -3005,7 +3004,7 @@ static ssize_t control_show(struct device *dev,
return sysfs_emit(buf, "%d\n", cpu_smt_num_threads);
#endif
return snprintf(buf, PAGE_SIZE - 2, "%s\n", state);
return sysfs_emit(buf, "%s\n", state);
}
static ssize_t control_store(struct device *dev, struct device_attribute *attr,
@ -3018,7 +3017,7 @@ static DEVICE_ATTR_RW(control);
static ssize_t active_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return snprintf(buf, PAGE_SIZE - 2, "%d\n", sched_smt_active());
return sysfs_emit(buf, "%d\n", sched_smt_active());
}
static DEVICE_ATTR_RO(active);
@ -3107,10 +3106,10 @@ const DECLARE_BITMAP(cpu_all_bits, NR_CPUS) = CPU_BITS_ALL;
EXPORT_SYMBOL(cpu_all_bits);
#ifdef CONFIG_INIT_ALL_POSSIBLE
struct cpumask __cpu_possible_mask __read_mostly
struct cpumask __cpu_possible_mask __ro_after_init
= {CPU_BITS_ALL};
#else
struct cpumask __cpu_possible_mask __read_mostly;
struct cpumask __cpu_possible_mask __ro_after_init;
#endif
EXPORT_SYMBOL(__cpu_possible_mask);