b10e8ec405
An inclusion of cache.h in printk.h was added in 2014 in commitc28aa1f0a8("printk/cache: mark printk_once test variable __read_mostly") in order to bring in the definition of __read_mostly. The usage of __read_mostly was later removed in commit3ec25826ae("printk: Tie printk_once / printk_deferred_once into .data.once for reset") which made the inclusion of cache.h unnecessary, so remove it. We have a small amount of code that depended on the inclusion of cache.h from printk.h; fix that code to include the appropriate header. This fixes a circular inclusion on arm64 (linux/printk.h -> linux/cache.h -> asm/cache.h -> linux/kasan-enabled.h -> linux/static_key.h -> linux/jump_label.h -> linux/bug.h -> asm/bug.h -> linux/printk.h) that would otherwise be introduced by the next patch. Build tested using {allyesconfig,defconfig} x {arm64,x86_64}. Link: https://linux-review.googlesource.com/id/I8fd51f72c9ef1f2d6afd3b2cbc875aa4792c1fba Link: https://lkml.kernel.org/r/20220427195820.1716975-1-pcc@google.com Signed-off-by: Peter Collingbourne <pcc@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David Rientjes <rientjes@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kees Cook <keescook@chromium.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Bug: 265364138 (cherry picked from commit 534aa1dc975ac883ad89110534585a96630802a0) [Zhenhua: Resolved minor compile issue in include/linux/debug_locks.h] Change-Id: I46182e781b64561a1ebd5405628a317d4f6cb789 Signed-off-by: Jaewon Kim <jaewon31.kim@samsung.com> Signed-off-by: Zhenhua Huang <quic_zhenhuah@quicinc.com>
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
|
|
|
|
#ifndef __ASM_CSKY_PROCESSOR_H
|
|
#define __ASM_CSKY_PROCESSOR_H
|
|
|
|
#include <linux/bitops.h>
|
|
#include <asm/segment.h>
|
|
#include <linux/cache.h>
|
|
#include <asm/ptrace.h>
|
|
#include <asm/current.h>
|
|
#include <abi/reg_ops.h>
|
|
#include <abi/regdef.h>
|
|
#include <abi/switch_context.h>
|
|
#ifdef CONFIG_CPU_HAS_FPU
|
|
#include <abi/fpu.h>
|
|
#endif
|
|
|
|
struct cpuinfo_csky {
|
|
unsigned long asid_cache;
|
|
} __aligned(SMP_CACHE_BYTES);
|
|
|
|
extern struct cpuinfo_csky cpu_data[];
|
|
|
|
/*
|
|
* User space process size: 2GB. This is hardcoded into a few places,
|
|
* so don't change it unless you know what you are doing. TASK_SIZE
|
|
* for a 64 bit kernel expandable to 8192EB, of which the current CSKY
|
|
* implementations will "only" be able to use 1TB ...
|
|
*/
|
|
#define TASK_SIZE 0x7fff8000UL
|
|
|
|
#ifdef __KERNEL__
|
|
#define STACK_TOP TASK_SIZE
|
|
#define STACK_TOP_MAX STACK_TOP
|
|
#endif
|
|
|
|
/* This decides where the kernel will search for a free chunk of vm
|
|
* space during mmap's.
|
|
*/
|
|
#define TASK_UNMAPPED_BASE (TASK_SIZE / 3)
|
|
|
|
struct thread_struct {
|
|
unsigned long sp; /* kernel stack pointer */
|
|
unsigned long trap_no; /* saved status register */
|
|
|
|
/* FPU regs */
|
|
struct user_fp __aligned(16) user_fp;
|
|
};
|
|
|
|
#define INIT_THREAD { \
|
|
.sp = sizeof(init_stack) + (unsigned long) &init_stack, \
|
|
}
|
|
|
|
/*
|
|
* Do necessary setup to start up a newly executed thread.
|
|
*
|
|
* pass the data segment into user programs if it exists,
|
|
* it can't hurt anything as far as I can tell
|
|
*/
|
|
#define start_thread(_regs, _pc, _usp) \
|
|
do { \
|
|
set_fs(USER_DS); /* reads from user space */ \
|
|
(_regs)->pc = (_pc); \
|
|
(_regs)->regs[1] = 0; /* ABIV1 is R7, uClibc_main rtdl arg */ \
|
|
(_regs)->regs[2] = 0; \
|
|
(_regs)->regs[3] = 0; /* ABIV2 is R7, use it? */ \
|
|
(_regs)->sr &= ~PS_S; \
|
|
(_regs)->usp = (_usp); \
|
|
} while (0)
|
|
|
|
/* Forward declaration, a strange C thing */
|
|
struct task_struct;
|
|
|
|
/* Free all resources held by a thread. */
|
|
static inline void release_thread(struct task_struct *dead_task)
|
|
{
|
|
}
|
|
|
|
/* Prepare to copy thread state - unlazy all lazy status */
|
|
#define prepare_to_copy(tsk) do { } while (0)
|
|
|
|
extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
|
|
|
|
unsigned long get_wchan(struct task_struct *p);
|
|
|
|
#define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc)
|
|
#define KSTK_ESP(tsk) (task_pt_regs(tsk)->usp)
|
|
|
|
#define task_pt_regs(p) \
|
|
((struct pt_regs *)(THREAD_SIZE + task_stack_page(p)) - 1)
|
|
|
|
#define cpu_relax() barrier()
|
|
|
|
#endif /* __ASM_CSKY_PROCESSOR_H */
|