xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

xtensa: add SMP support

Browse Source 
This is largely based on SMP code from the xtensa-2.6.29-smp tree by
Piet Delaney, Marc Gauthier, Joe Taylor, Christian Zankel (and possibly
other Tensilica folks).

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
This commit is contained in:
Max Filippov
2013-10-17 02:42:26 +04:00
committed by Chris Zankel
parent 26a8e96a8b
commit f615136c06
24 changed files with 970 additions and 202 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
arch/xtensa/include/asm/smp.h
View File

@@ -1,27 +1,34 @@
/*
* include/asm-xtensa/smp.h
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 2001 - 2005 Tensilica Inc.
* Copyright (C) 2001 - 2013 Tensilica Inc.
*/
#ifndef _XTENSA_SMP_H
#define _XTENSA_SMP_H
extern struct xtensa_cpuinfo boot_cpu_data;
#define cpu_data (&boot_cpu_data)
#define current_cpu_data boot_cpu_data
struct xtensa_cpuinfo {
unsigned long *pgd_cache;
unsigned long *pte_cache;
unsigned long pgtable_cache_sz;
};
#ifdef CONFIG_SMP
#define raw_smp_processor_id() (current_thread_info()->cpu)
#define cpu_logical_map(cpu) (cpu)
struct start_info {
unsigned long stack;
};
extern struct start_info start_info;
struct cpumask;
void arch_send_call_function_ipi_mask(const struct cpumask *mask);
void arch_send_call_function_single_ipi(int cpu);
void smp_init_cpus(void);
void secondary_init_irq(void);
void ipi_init(void);
struct seq_file;
void show_ipi_list(struct seq_file *p, int prec);
#endif /* CONFIG_SMP */
#endif /* _XTENSA_SMP_H */