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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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98a79d6a50
Impact: cleanup Each SMP arch defines these themselves. Move them to a central location. Twists: 1) Some archs (m32, parisc, s390) set possible_map to all 1, so we add a CONFIG_INIT_ALL_POSSIBLE for this rather than break them. 2) mips and sparc32 '#define cpu_possible_map phys_cpu_present_map'. Those archs simply have phys_cpu_present_map replaced everywhere. 3) Alpha defined cpu_possible_map to cpu_present_map; this is tricky so I just manipulate them both in sync. 4) IA64, cris and m32r have gratuitous 'extern cpumask_t cpu_possible_map' declarations. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Reviewed-by: Grant Grundler <grundler@parisc-linux.org> Tested-by: Tony Luck <tony.luck@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Mike Travis <travis@sgi.com> Cc: ink@jurassic.park.msu.ru Cc: rmk@arm.linux.org.uk Cc: starvik@axis.com Cc: tony.luck@intel.com Cc: takata@linux-m32r.org Cc: ralf@linux-mips.org Cc: grundler@parisc-linux.org Cc: paulus@samba.org Cc: schwidefsky@de.ibm.com Cc: lethal@linux-sh.org Cc: wli@holomorphy.com Cc: davem@davemloft.net Cc: jdike@addtoit.com Cc: mingo@redhat.com
62 lines
1.3 KiB
C
62 lines
1.3 KiB
C
#ifndef __ASM_SMP_H
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#define __ASM_SMP_H
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#include <linux/threads.h>
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#include <linux/cpumask.h>
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#include <linux/bitops.h>
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#include <asm/pal.h>
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/* HACK: Cabrio WHAMI return value is bogus if more than 8 bits used.. :-( */
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static __inline__ unsigned char
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__hard_smp_processor_id(void)
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{
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register unsigned char __r0 __asm__("$0");
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__asm__ __volatile__(
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"call_pal %1 #whami"
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: "=r"(__r0)
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:"i" (PAL_whami)
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: "$1", "$22", "$23", "$24", "$25");
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return __r0;
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}
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#ifdef CONFIG_SMP
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#include <asm/irq.h>
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struct cpuinfo_alpha {
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unsigned long loops_per_jiffy;
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unsigned long last_asn;
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int need_new_asn;
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int asn_lock;
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unsigned long ipi_count;
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unsigned long prof_multiplier;
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unsigned long prof_counter;
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unsigned char mcheck_expected;
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unsigned char mcheck_taken;
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unsigned char mcheck_extra;
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} __attribute__((aligned(64)));
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extern struct cpuinfo_alpha cpu_data[NR_CPUS];
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#define PROC_CHANGE_PENALTY 20
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#define hard_smp_processor_id() __hard_smp_processor_id()
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#define raw_smp_processor_id() (current_thread_info()->cpu)
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extern int smp_num_cpus;
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extern void arch_send_call_function_single_ipi(int cpu);
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extern void arch_send_call_function_ipi(cpumask_t mask);
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#else /* CONFIG_SMP */
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#define hard_smp_processor_id() 0
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#define smp_call_function_on_cpu(func,info,wait,cpu) ({ 0; })
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#endif /* CONFIG_SMP */
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#define NO_PROC_ID (-1)
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#endif
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