Contributors: 31
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Benjamin Herrenschmidt |
225 |
22.19% |
13 |
18.57% |
| Milton D. Miller II |
175 |
17.26% |
5 |
7.14% |
| Anton Blanchard |
102 |
10.06% |
6 |
8.57% |
| Paul Mackerras |
96 |
9.47% |
2 |
2.86% |
| Nicholas Piggin |
85 |
8.38% |
6 |
8.57% |
| Gautham R. Shenoy |
46 |
4.54% |
1 |
1.43% |
| Michael Ellerman |
39 |
3.85% |
5 |
7.14% |
| Chen-Hui Zhao |
37 |
3.65% |
4 |
5.71% |
| Andrew Morton |
36 |
3.55% |
4 |
5.71% |
| Oliver O'Halloran |
27 |
2.66% |
1 |
1.43% |
| Zwane Mwaikambo |
20 |
1.97% |
1 |
1.43% |
| Robert Jennings |
19 |
1.87% |
1 |
1.43% |
| Suresh E. Warrier |
16 |
1.58% |
2 |
2.86% |
| Christophe Leroy |
14 |
1.38% |
1 |
1.43% |
| Jens Axboe |
14 |
1.38% |
1 |
1.43% |
| Nathan T. Lynch |
14 |
1.38% |
2 |
2.86% |
| Andy Fleming |
9 |
0.89% |
1 |
1.43% |
| Mike Travis |
8 |
0.79% |
1 |
1.43% |
| Kumar Gala |
7 |
0.69% |
1 |
1.43% |
| Arnd Bergmann |
6 |
0.59% |
1 |
1.43% |
| Rusty Russell |
5 |
0.49% |
1 |
1.43% |
| Fernando Luis Vázquez Cao |
4 |
0.39% |
1 |
1.43% |
| Thomas Gleixner |
2 |
0.20% |
1 |
1.43% |
| Tejun Heo |
1 |
0.10% |
1 |
1.43% |
| Matt Evans |
1 |
0.10% |
1 |
1.43% |
| Ingo Molnar |
1 |
0.10% |
1 |
1.43% |
| Hugh Dickins |
1 |
0.10% |
1 |
1.43% |
| David Gibson |
1 |
0.10% |
1 |
1.43% |
| Thiago Jung Bauermann |
1 |
0.10% |
1 |
1.43% |
| Srivatsa S. Bhat |
1 |
0.10% |
1 |
1.43% |
| Matthew Dobson |
1 |
0.10% |
1 |
1.43% |
| Total |
1014 |
|
70 |
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* smp.h: PowerPC-specific SMP code.
*
* Original was a copy of sparc smp.h. Now heavily modified
* for PPC.
*
* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 1996-2001 Cort Dougan <cort@fsmlabs.com>
*/
#ifndef _ASM_POWERPC_SMP_H
#define _ASM_POWERPC_SMP_H
#ifdef __KERNEL__
#include <linux/threads.h>
#include <linux/cpumask.h>
#include <linux/kernel.h>
#include <linux/irqreturn.h>
#ifndef __ASSEMBLY__
#ifdef CONFIG_PPC64
#include <asm/paca.h>
#endif
#include <asm/percpu.h>
extern int boot_cpuid;
extern int spinning_secondaries;
extern u32 *cpu_to_phys_id;
extern void cpu_die(void);
extern int cpu_to_chip_id(int cpu);
#ifdef CONFIG_SMP
struct smp_ops_t {
void (*message_pass)(int cpu, int msg);
#ifdef CONFIG_PPC_SMP_MUXED_IPI
void (*cause_ipi)(int cpu);
#endif
int (*cause_nmi_ipi)(int cpu);
void (*probe)(void);
int (*kick_cpu)(int nr);
int (*prepare_cpu)(int nr);
void (*setup_cpu)(int nr);
void (*bringup_done)(void);
void (*take_timebase)(void);
void (*give_timebase)(void);
int (*cpu_disable)(void);
void (*cpu_die)(unsigned int nr);
int (*cpu_bootable)(unsigned int nr);
};
extern int smp_send_nmi_ipi(int cpu, void (*fn)(struct pt_regs *), u64 delay_us);
extern int smp_send_safe_nmi_ipi(int cpu, void (*fn)(struct pt_regs *), u64 delay_us);
extern void smp_send_debugger_break(void);
extern void start_secondary_resume(void);
extern void smp_generic_give_timebase(void);
extern void smp_generic_take_timebase(void);
DECLARE_PER_CPU(unsigned int, cpu_pvr);
#ifdef CONFIG_HOTPLUG_CPU
int generic_cpu_disable(void);
void generic_cpu_die(unsigned int cpu);
void generic_set_cpu_dead(unsigned int cpu);
void generic_set_cpu_up(unsigned int cpu);
int generic_check_cpu_restart(unsigned int cpu);
int is_cpu_dead(unsigned int cpu);
#else
#define generic_set_cpu_up(i) do { } while (0)
#endif
#ifdef CONFIG_PPC64
#define raw_smp_processor_id() (local_paca->paca_index)
#define hard_smp_processor_id() (get_paca()->hw_cpu_id)
#else
/* 32-bit */
extern int smp_hw_index[];
/*
* This is particularly ugly: it appears we can't actually get the definition
* of task_struct here, but we need access to the CPU this task is running on.
* Instead of using task_struct we're using _TASK_CPU which is extracted from
* asm-offsets.h by kbuild to get the current processor ID.
*
* This also needs to be safeguarded when building asm-offsets.s because at
* that time _TASK_CPU is not defined yet. It could have been guarded by
* _TASK_CPU itself, but we want the build to fail if _TASK_CPU is missing
* when building something else than asm-offsets.s
*/
#ifdef GENERATING_ASM_OFFSETS
#define raw_smp_processor_id() (0)
#else
#define raw_smp_processor_id() (*(unsigned int *)((void *)current + _TASK_CPU))
#endif
#define hard_smp_processor_id() (smp_hw_index[smp_processor_id()])
static inline int get_hard_smp_processor_id(int cpu)
{
return smp_hw_index[cpu];
}
static inline void set_hard_smp_processor_id(int cpu, int phys)
{
smp_hw_index[cpu] = phys;
}
#endif
DECLARE_PER_CPU(cpumask_var_t, cpu_sibling_map);
DECLARE_PER_CPU(cpumask_var_t, cpu_l2_cache_map);
DECLARE_PER_CPU(cpumask_var_t, cpu_core_map);
DECLARE_PER_CPU(cpumask_var_t, cpu_smallcore_map);
static inline struct cpumask *cpu_sibling_mask(int cpu)
{
return per_cpu(cpu_sibling_map, cpu);
}
static inline struct cpumask *cpu_core_mask(int cpu)
{
return per_cpu(cpu_core_map, cpu);
}
static inline struct cpumask *cpu_l2_cache_mask(int cpu)
{
return per_cpu(cpu_l2_cache_map, cpu);
}
static inline struct cpumask *cpu_smallcore_mask(int cpu)
{
return per_cpu(cpu_smallcore_map, cpu);
}
extern int cpu_to_core_id(int cpu);
/* Since OpenPIC has only 4 IPIs, we use slightly different message numbers.
*
* Make sure this matches openpic_request_IPIs in open_pic.c, or what shows up
* in /proc/interrupts will be wrong!!! --Troy */
#define PPC_MSG_CALL_FUNCTION 0
#define PPC_MSG_RESCHEDULE 1
#define PPC_MSG_TICK_BROADCAST 2
#define PPC_MSG_NMI_IPI 3
/* This is only used by the powernv kernel */
#define PPC_MSG_RM_HOST_ACTION 4
#define NMI_IPI_ALL_OTHERS -2
#ifdef CONFIG_NMI_IPI
extern int smp_handle_nmi_ipi(struct pt_regs *regs);
#else
static inline int smp_handle_nmi_ipi(struct pt_regs *regs) { return 0; }
#endif
/* for irq controllers that have dedicated ipis per message (4) */
extern int smp_request_message_ipi(int virq, int message);
extern const char *smp_ipi_name[];
/* for irq controllers with only a single ipi */
extern void smp_muxed_ipi_message_pass(int cpu, int msg);
extern void smp_muxed_ipi_set_message(int cpu, int msg);
extern irqreturn_t smp_ipi_demux(void);
extern irqreturn_t smp_ipi_demux_relaxed(void);
void smp_init_pSeries(void);
void smp_init_cell(void);
void smp_setup_cpu_maps(void);
extern int __cpu_disable(void);
extern void __cpu_die(unsigned int cpu);
#else
/* for UP */
#define hard_smp_processor_id() get_hard_smp_processor_id(0)
#define smp_setup_cpu_maps()
static inline void inhibit_secondary_onlining(void) {}
static inline void uninhibit_secondary_onlining(void) {}
static inline const struct cpumask *cpu_sibling_mask(int cpu)
{
return cpumask_of(cpu);
}
static inline const struct cpumask *cpu_smallcore_mask(int cpu)
{
return cpumask_of(cpu);
}
#endif /* CONFIG_SMP */
#ifdef CONFIG_PPC64
static inline int get_hard_smp_processor_id(int cpu)
{
return paca_ptrs[cpu]->hw_cpu_id;
}
static inline void set_hard_smp_processor_id(int cpu, int phys)
{
paca_ptrs[cpu]->hw_cpu_id = phys;
}
#else
/* 32-bit */
#ifndef CONFIG_SMP
extern int boot_cpuid_phys;
static inline int get_hard_smp_processor_id(int cpu)
{
return boot_cpuid_phys;
}
static inline void set_hard_smp_processor_id(int cpu, int phys)
{
boot_cpuid_phys = phys;
}
#endif /* !CONFIG_SMP */
#endif /* !CONFIG_PPC64 */
#if defined(CONFIG_PPC64) && (defined(CONFIG_SMP) || defined(CONFIG_KEXEC_CORE))
extern void smp_release_cpus(void);
#else
static inline void smp_release_cpus(void) { };
#endif
extern int smt_enabled_at_boot;
extern void smp_mpic_probe(void);
extern void smp_mpic_setup_cpu(int cpu);
extern int smp_generic_kick_cpu(int nr);
extern int smp_generic_cpu_bootable(unsigned int nr);
extern void smp_generic_give_timebase(void);
extern void smp_generic_take_timebase(void);
extern struct smp_ops_t *smp_ops;
extern void arch_send_call_function_single_ipi(int cpu);
extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
/* Definitions relative to the secondary CPU spin loop
* and entry point. Not all of them exist on both 32 and
* 64-bit but defining them all here doesn't harm
*/
extern void generic_secondary_smp_init(void);
extern void generic_secondary_thread_init(void);
extern unsigned long __secondary_hold_spinloop;
extern unsigned long __secondary_hold_acknowledge;
extern char __secondary_hold;
extern unsigned int booting_thread_hwid;
extern void __early_start(void);
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_SMP_H) */