mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 04:35:27 +07:00
d3770449d3
Impact: bug fix IA-64 needs to put percpu data in the seperate section even on UP. Fixes regression caused by "percpu: refactor percpu.h" Signed-off-by: Brian Gerst <brgerst@gmail.com> Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
#ifndef _ASM_IA64_PERCPU_H
|
|
#define _ASM_IA64_PERCPU_H
|
|
|
|
/*
|
|
* Copyright (C) 2002-2003 Hewlett-Packard Co
|
|
* David Mosberger-Tang <davidm@hpl.hp.com>
|
|
*/
|
|
|
|
#define PERCPU_ENOUGH_ROOM PERCPU_PAGE_SIZE
|
|
|
|
#ifdef __ASSEMBLY__
|
|
# define THIS_CPU(var) (per_cpu__##var) /* use this to mark accesses to per-CPU variables... */
|
|
#else /* !__ASSEMBLY__ */
|
|
|
|
|
|
#include <linux/threads.h>
|
|
|
|
#ifdef CONFIG_SMP
|
|
|
|
#ifdef HAVE_MODEL_SMALL_ATTRIBUTE
|
|
# define PER_CPU_ATTRIBUTES __attribute__((__model__ (__small__)))
|
|
#endif
|
|
|
|
#define __my_cpu_offset __ia64_per_cpu_var(local_per_cpu_offset)
|
|
|
|
extern void *per_cpu_init(void);
|
|
|
|
#else /* ! SMP */
|
|
|
|
#define per_cpu_init() (__phys_per_cpu_start)
|
|
|
|
#endif /* SMP */
|
|
|
|
#define PER_CPU_BASE_SECTION ".data.percpu"
|
|
|
|
/*
|
|
* Be extremely careful when taking the address of this variable! Due to virtual
|
|
* remapping, it is different from the canonical address returned by __get_cpu_var(var)!
|
|
* On the positive side, using __ia64_per_cpu_var() instead of __get_cpu_var() is slightly
|
|
* more efficient.
|
|
*/
|
|
#define __ia64_per_cpu_var(var) per_cpu__##var
|
|
|
|
#include <asm-generic/percpu.h>
|
|
|
|
/* Equal to __per_cpu_offset[smp_processor_id()], but faster to access: */
|
|
DECLARE_PER_CPU(unsigned long, local_per_cpu_offset);
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
|
|
#endif /* _ASM_IA64_PERCPU_H */
|