Linux lhjmq-records 5.15.0-118-generic #128-Ubuntu SMP Fri Jul 5 09:28:59 UTC 2024 x86_64
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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SMP_H
#define __ASM_SMP_H
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <linux/bitops.h>
#include <asm/pal.h>
/* HACK: Cabrio WHAMI return value is bogus if more than 8 bits used.. :-( */
static __inline__ unsigned char
__hard_smp_processor_id(void)
{
register unsigned char __r0 __asm__("$0");
__asm__ __volatile__(
"call_pal %1 #whami"
: "=r"(__r0)
:"i" (PAL_whami)
: "$1", "$22", "$23", "$24", "$25");
return __r0;
}
#ifdef CONFIG_SMP
#include <asm/irq.h>
struct cpuinfo_alpha {
unsigned long loops_per_jiffy;
unsigned long last_asn;
int need_new_asn;
int asn_lock;
unsigned long ipi_count;
unsigned long prof_multiplier;
unsigned long prof_counter;
unsigned char mcheck_expected;
unsigned char mcheck_taken;
unsigned char mcheck_extra;
} __attribute__((aligned(64)));
extern struct cpuinfo_alpha cpu_data[NR_CPUS];
#define hard_smp_processor_id() __hard_smp_processor_id()
#define raw_smp_processor_id() (current_thread_info()->cpu)
extern int smp_num_cpus;
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
#else /* CONFIG_SMP */
#define hard_smp_processor_id() 0
#define smp_call_function_on_cpu(func,info,wait,cpu) ({ 0; })
#endif /* CONFIG_SMP */
#define NO_PROC_ID (-1)
#endif
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