1687d8aca5
Pull x86 apic updates from Dave Hansen:
"This includes a very thorough rework of the 'struct apic' handlers.
Quite a variety of them popped up over the years, especially in the
32-bit days when odd apics were much more in vogue.
The end result speaks for itself, which is a removal of a ton of code
and static calls to replace indirect calls.
If there's any breakage here, it's likely to be around the 32-bit
museum pieces that get light to no testing these days.
Summary:
- Rework apic callbacks, getting rid of unnecessary ones and
coalescing lots of silly duplicates.
- Use static_calls() instead of indirect calls for apic->foo()
- Tons of cleanups an crap removal along the way"
* tag 'x86_apic_for_6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (64 commits)
x86/apic: Turn on static calls
x86/apic: Provide static call infrastructure for APIC callbacks
x86/apic: Wrap IPI calls into helper functions
x86/apic: Mark all hotpath APIC callback wrappers __always_inline
x86/xen/apic: Mark apic __ro_after_init
x86/apic: Convert other overrides to apic_update_callback()
x86/apic: Replace acpi_wake_cpu_handler_update() and apic_set_eoi_cb()
x86/apic: Provide apic_update_callback()
x86/xen/apic: Use standard apic driver mechanism for Xen PV
x86/apic: Provide common init infrastructure
x86/apic: Wrap apic->native_eoi() into a helper
x86/apic: Nuke ack_APIC_irq()
x86/apic: Remove pointless arguments from [native_]eoi_write()
x86/apic/noop: Tidy up the code
x86/apic: Remove pointless NULL initializations
x86/apic: Sanitize APIC ID range validation
x86/apic: Prepare x2APIC for using apic::max_apic_id
x86/apic: Simplify X2APIC ID validation
x86/apic: Add max_apic_id member
x86/apic: Wrap APIC ID validation into an inline
...
200 lines
4.9 KiB
C
200 lines
4.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_X86_SMP_H
|
|
#define _ASM_X86_SMP_H
|
|
#ifndef __ASSEMBLY__
|
|
#include <linux/cpumask.h>
|
|
|
|
#include <asm/cpumask.h>
|
|
#include <asm/current.h>
|
|
#include <asm/thread_info.h>
|
|
|
|
extern int smp_num_siblings;
|
|
extern unsigned int num_processors;
|
|
|
|
DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_sibling_map);
|
|
DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_core_map);
|
|
DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_die_map);
|
|
/* cpus sharing the last level cache: */
|
|
DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_llc_shared_map);
|
|
DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_l2c_shared_map);
|
|
DECLARE_PER_CPU_READ_MOSTLY(u16, cpu_llc_id);
|
|
DECLARE_PER_CPU_READ_MOSTLY(u16, cpu_l2c_id);
|
|
|
|
DECLARE_EARLY_PER_CPU_READ_MOSTLY(u16, x86_cpu_to_apicid);
|
|
DECLARE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_acpiid);
|
|
|
|
struct task_struct;
|
|
|
|
struct smp_ops {
|
|
void (*smp_prepare_boot_cpu)(void);
|
|
void (*smp_prepare_cpus)(unsigned max_cpus);
|
|
void (*smp_cpus_done)(unsigned max_cpus);
|
|
|
|
void (*stop_other_cpus)(int wait);
|
|
void (*crash_stop_other_cpus)(void);
|
|
void (*smp_send_reschedule)(int cpu);
|
|
|
|
void (*cleanup_dead_cpu)(unsigned cpu);
|
|
void (*poll_sync_state)(void);
|
|
int (*kick_ap_alive)(unsigned cpu, struct task_struct *tidle);
|
|
int (*cpu_disable)(void);
|
|
void (*cpu_die)(unsigned int cpu);
|
|
void (*play_dead)(void);
|
|
|
|
void (*send_call_func_ipi)(const struct cpumask *mask);
|
|
void (*send_call_func_single_ipi)(int cpu);
|
|
};
|
|
|
|
/* Globals due to paravirt */
|
|
extern void set_cpu_sibling_map(int cpu);
|
|
|
|
#ifdef CONFIG_SMP
|
|
extern struct smp_ops smp_ops;
|
|
|
|
static inline void smp_send_stop(void)
|
|
{
|
|
smp_ops.stop_other_cpus(0);
|
|
}
|
|
|
|
static inline void stop_other_cpus(void)
|
|
{
|
|
smp_ops.stop_other_cpus(1);
|
|
}
|
|
|
|
static inline void smp_prepare_boot_cpu(void)
|
|
{
|
|
smp_ops.smp_prepare_boot_cpu();
|
|
}
|
|
|
|
static inline void smp_prepare_cpus(unsigned int max_cpus)
|
|
{
|
|
smp_ops.smp_prepare_cpus(max_cpus);
|
|
}
|
|
|
|
static inline void smp_cpus_done(unsigned int max_cpus)
|
|
{
|
|
smp_ops.smp_cpus_done(max_cpus);
|
|
}
|
|
|
|
static inline int __cpu_disable(void)
|
|
{
|
|
return smp_ops.cpu_disable();
|
|
}
|
|
|
|
static inline void __cpu_die(unsigned int cpu)
|
|
{
|
|
if (smp_ops.cpu_die)
|
|
smp_ops.cpu_die(cpu);
|
|
}
|
|
|
|
static inline void __noreturn play_dead(void)
|
|
{
|
|
smp_ops.play_dead();
|
|
BUG();
|
|
}
|
|
|
|
static inline void arch_smp_send_reschedule(int cpu)
|
|
{
|
|
smp_ops.smp_send_reschedule(cpu);
|
|
}
|
|
|
|
static inline void arch_send_call_function_single_ipi(int cpu)
|
|
{
|
|
smp_ops.send_call_func_single_ipi(cpu);
|
|
}
|
|
|
|
static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask)
|
|
{
|
|
smp_ops.send_call_func_ipi(mask);
|
|
}
|
|
|
|
void cpu_disable_common(void);
|
|
void native_smp_prepare_boot_cpu(void);
|
|
void smp_prepare_cpus_common(void);
|
|
void native_smp_prepare_cpus(unsigned int max_cpus);
|
|
void calculate_max_logical_packages(void);
|
|
void native_smp_cpus_done(unsigned int max_cpus);
|
|
int common_cpu_up(unsigned int cpunum, struct task_struct *tidle);
|
|
int native_kick_ap(unsigned int cpu, struct task_struct *tidle);
|
|
int native_cpu_disable(void);
|
|
void __noreturn hlt_play_dead(void);
|
|
void native_play_dead(void);
|
|
void play_dead_common(void);
|
|
void wbinvd_on_cpu(int cpu);
|
|
int wbinvd_on_all_cpus(void);
|
|
|
|
void smp_kick_mwait_play_dead(void);
|
|
|
|
void native_smp_send_reschedule(int cpu);
|
|
void native_send_call_func_ipi(const struct cpumask *mask);
|
|
void native_send_call_func_single_ipi(int cpu);
|
|
|
|
bool smp_park_other_cpus_in_init(void);
|
|
void smp_store_cpu_info(int id);
|
|
|
|
asmlinkage __visible void smp_reboot_interrupt(void);
|
|
__visible void smp_reschedule_interrupt(struct pt_regs *regs);
|
|
__visible void smp_call_function_interrupt(struct pt_regs *regs);
|
|
__visible void smp_call_function_single_interrupt(struct pt_regs *r);
|
|
|
|
#define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu)
|
|
#define cpu_acpi_id(cpu) per_cpu(x86_cpu_to_acpiid, cpu)
|
|
|
|
/*
|
|
* This function is needed by all SMP systems. It must _always_ be valid
|
|
* from the initial startup.
|
|
*/
|
|
#define raw_smp_processor_id() this_cpu_read(pcpu_hot.cpu_number)
|
|
#define __smp_processor_id() __this_cpu_read(pcpu_hot.cpu_number)
|
|
|
|
#ifdef CONFIG_X86_32
|
|
extern int safe_smp_processor_id(void);
|
|
#else
|
|
# define safe_smp_processor_id() smp_processor_id()
|
|
#endif
|
|
|
|
static inline struct cpumask *cpu_llc_shared_mask(int cpu)
|
|
{
|
|
return per_cpu(cpu_llc_shared_map, cpu);
|
|
}
|
|
|
|
static inline struct cpumask *cpu_l2c_shared_mask(int cpu)
|
|
{
|
|
return per_cpu(cpu_l2c_shared_map, cpu);
|
|
}
|
|
|
|
#else /* !CONFIG_SMP */
|
|
#define wbinvd_on_cpu(cpu) wbinvd()
|
|
static inline int wbinvd_on_all_cpus(void)
|
|
{
|
|
wbinvd();
|
|
return 0;
|
|
}
|
|
|
|
static inline struct cpumask *cpu_llc_shared_mask(int cpu)
|
|
{
|
|
return (struct cpumask *)cpumask_of(0);
|
|
}
|
|
#endif /* CONFIG_SMP */
|
|
|
|
extern unsigned disabled_cpus;
|
|
|
|
#ifdef CONFIG_DEBUG_NMI_SELFTEST
|
|
extern void nmi_selftest(void);
|
|
#else
|
|
#define nmi_selftest() do { } while (0)
|
|
#endif
|
|
|
|
extern unsigned int smpboot_control;
|
|
extern unsigned long apic_mmio_base;
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
|
|
/* Control bits for startup_64 */
|
|
#define STARTUP_READ_APICID 0x80000000
|
|
|
|
/* Top 8 bits are reserved for control */
|
|
#define STARTUP_PARALLEL_MASK 0xFF000000
|
|
|
|
#endif /* _ASM_X86_SMP_H */
|