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Date: Wed, 07 Mar 2012 19:48:55 +0000
From: David Howells <dhowells@...hat.com>
To: paul.gortmaker@...driver.com, hpa@...or.com
Cc: torvalds@...ux-foundation.org, sfr@...b.auug.org.au,
mingo@...hat.com, arnd@...db.de, dhowells@...hat.com,
tglx@...utronix.de, linux-kernel@...r.kernel.org,
linux-arch@...r.kernel.org
Subject: [PATCH 16/29] Disintegrate asm/system.h for Microblaze
Disintegrate asm/system.h for Microblaze. Not compiled.
Signed-off-by: David Howells <dhowells@...hat.com>
---
arch/microblaze/include/asm/atomic.h | 36 ++++++++++++
arch/microblaze/include/asm/barrier.h | 26 ++++++++
arch/microblaze/include/asm/exec.h | 14 +++++
arch/microblaze/include/asm/processor.h | 11 +++-
arch/microblaze/include/asm/setup.h | 6 ++
arch/microblaze/include/asm/switch_to.h | 24 ++++++++
arch/microblaze/include/asm/system.h | 96 -------------------------------
7 files changed, 116 insertions(+), 97 deletions(-)
create mode 100644 arch/microblaze/include/asm/barrier.h
create mode 100644 arch/microblaze/include/asm/exec.h
create mode 100644 arch/microblaze/include/asm/switch_to.h
delete mode 100644 arch/microblaze/include/asm/system.h
diff --git a/arch/microblaze/include/asm/atomic.h b/arch/microblaze/include/asm/atomic.h
index 615f539..f3fadd14 100644
--- a/arch/microblaze/include/asm/atomic.h
+++ b/arch/microblaze/include/asm/atomic.h
@@ -22,4 +22,40 @@ static inline int atomic_dec_if_positive(atomic_t *v)
return res;
}
+void __bad_xchg(volatile void *ptr, int size);
+
+static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
+ int size)
+{
+ unsigned long ret;
+ unsigned long flags;
+
+ switch (size) {
+ case 1:
+ local_irq_save(flags);
+ ret = *(volatile unsigned char *)ptr;
+ *(volatile unsigned char *)ptr = x;
+ local_irq_restore(flags);
+ break;
+
+ case 4:
+ local_irq_save(flags);
+ ret = *(volatile unsigned long *)ptr;
+ *(volatile unsigned long *)ptr = x;
+ local_irq_restore(flags);
+ break;
+ default:
+ __bad_xchg(ptr, size), ret = 0;
+ break;
+ }
+
+ return ret;
+}
+
+#define xchg(ptr, x) \
+ ((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
+
+#include <asm-generic/cmpxchg.h>
+#include <asm-generic/cmpxchg-local.h>
+
#endif /* _ASM_MICROBLAZE_ATOMIC_H */
diff --git a/arch/microblaze/include/asm/barrier.h b/arch/microblaze/include/asm/barrier.h
new file mode 100644
index 0000000..5bdb324
--- /dev/null
+++ b/arch/microblaze/include/asm/barrier.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * 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.
+ */
+
+#ifndef _ASM_MICROBLAZE_BARRIER_H
+#define _ASM_MICROBLAZE_BARRIER_H
+
+#define smp_read_barrier_depends() do {} while (0)
+#define read_barrier_depends() do {} while (0)
+
+#define nop() asm volatile ("nop")
+#define mb() barrier()
+#define rmb() mb()
+#define wmb() mb()
+#define set_mb(var, value) do { var = value; mb(); } while (0)
+#define set_wmb(var, value) do { var = value; wmb(); } while (0)
+
+#define smp_mb() mb()
+#define smp_rmb() rmb()
+#define smp_wmb() wmb()
+
+#endif /* _ASM_MICROBLAZE_BARRIER_H */
diff --git a/arch/microblaze/include/asm/exec.h b/arch/microblaze/include/asm/exec.h
new file mode 100644
index 0000000..e750de1
--- /dev/null
+++ b/arch/microblaze/include/asm/exec.h
@@ -0,0 +1,14 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * 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.
+ */
+
+#ifndef _ASM_MICROBLAZE_EXEC_H
+#define _ASM_MICROBLAZE_EXEC_H
+
+#define arch_align_stack(x) (x)
+
+#endif /* _ASM_MICROBLAZE_EXEC_H */
diff --git a/arch/microblaze/include/asm/processor.h b/arch/microblaze/include/asm/processor.h
index 7283bfb..510a8e1 100644
--- a/arch/microblaze/include/asm/processor.h
+++ b/arch/microblaze/include/asm/processor.h
@@ -125,7 +125,6 @@ struct thread_struct {
.pgdir = swapper_pg_dir, \
}
-
/* Free all resources held by a thread. */
extern inline void release_thread(struct task_struct *dead_task)
{
@@ -144,6 +143,8 @@ static inline void exit_thread(void)
unsigned long get_wchan(struct task_struct *p);
+extern void ret_from_fork(void);
+
/* The size allocated for kernel stacks. This _must_ be a power of two! */
# define KERNEL_STACK_SIZE 0x2000
@@ -166,6 +167,14 @@ unsigned long get_wchan(struct task_struct *p);
# define STACK_TOP TASK_SIZE
# define STACK_TOP_MAX STACK_TOP
+void disable_hlt(void);
+void enable_hlt(void);
+void default_idle(void);
+
+#ifdef CONFIG_DEBUG_FS
+extern struct dentry *of_debugfs_root;
+#endif
+
# endif /* __ASSEMBLY__ */
# endif /* CONFIG_MMU */
#endif /* _ASM_MICROBLAZE_PROCESSOR_H */
diff --git a/arch/microblaze/include/asm/setup.h b/arch/microblaze/include/asm/setup.h
index 6c72ed7..aa22511 100644
--- a/arch/microblaze/include/asm/setup.h
+++ b/arch/microblaze/include/asm/setup.h
@@ -20,6 +20,8 @@ extern unsigned int boot_cpuid; /* move to smp.h */
extern char cmd_line[COMMAND_LINE_SIZE];
+extern char *klimit;
+
void early_printk(const char *fmt, ...);
int setup_early_printk(char *opt);
@@ -46,6 +48,10 @@ void machine_shutdown(void);
void machine_halt(void);
void machine_power_off(void);
+void free_init_pages(char *what, unsigned long begin, unsigned long end);
+extern void *alloc_maybe_bootmem(size_t size, gfp_t mask);
+extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
+
# endif/* __KERNEL__ */
# endif /* __ASSEMBLY__ */
#endif /* _ASM_MICROBLAZE_SETUP_H */
diff --git a/arch/microblaze/include/asm/switch_to.h b/arch/microblaze/include/asm/switch_to.h
new file mode 100644
index 0000000..f45baa2
--- /dev/null
+++ b/arch/microblaze/include/asm/switch_to.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * 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.
+ */
+
+#ifndef _ASM_MICROBLAZE_SWITCH_TO_H
+#define _ASM_MICROBLAZE_SWITCH_TO_H
+
+struct task_struct;
+struct thread_info;
+
+extern struct task_struct *_switch_to(struct thread_info *prev,
+ struct thread_info *next);
+
+#define switch_to(prev, next, last) \
+ do { \
+ (last) = _switch_to(task_thread_info(prev), \
+ task_thread_info(next)); \
+ } while (0)
+
+#endif /* _ASM_MICROBLAZE_SWITCH_TO_H */
diff --git a/arch/microblaze/include/asm/system.h b/arch/microblaze/include/asm/system.h
deleted file mode 100644
index 81f9f23..0000000
--- a/arch/microblaze/include/asm/system.h
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * Copyright (C) 2006 Atmark Techno, Inc.
- *
- * 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.
- */
-
-#ifndef _ASM_MICROBLAZE_SYSTEM_H
-#define _ASM_MICROBLAZE_SYSTEM_H
-
-#include <asm/registers.h>
-#include <asm/setup.h>
-#include <asm/irqflags.h>
-#include <asm/cache.h>
-
-#include <asm-generic/cmpxchg.h>
-#include <asm-generic/cmpxchg-local.h>
-
-struct task_struct;
-struct thread_info;
-
-extern struct task_struct *_switch_to(struct thread_info *prev,
- struct thread_info *next);
-
-#define switch_to(prev, next, last) \
- do { \
- (last) = _switch_to(task_thread_info(prev), \
- task_thread_info(next)); \
- } while (0)
-
-#define smp_read_barrier_depends() do {} while (0)
-#define read_barrier_depends() do {} while (0)
-
-#define nop() asm volatile ("nop")
-#define mb() barrier()
-#define rmb() mb()
-#define wmb() mb()
-#define set_mb(var, value) do { var = value; mb(); } while (0)
-#define set_wmb(var, value) do { var = value; wmb(); } while (0)
-
-#define smp_mb() mb()
-#define smp_rmb() rmb()
-#define smp_wmb() wmb()
-
-void __bad_xchg(volatile void *ptr, int size);
-
-static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
- int size)
-{
- unsigned long ret;
- unsigned long flags;
-
- switch (size) {
- case 1:
- local_irq_save(flags);
- ret = *(volatile unsigned char *)ptr;
- *(volatile unsigned char *)ptr = x;
- local_irq_restore(flags);
- break;
-
- case 4:
- local_irq_save(flags);
- ret = *(volatile unsigned long *)ptr;
- *(volatile unsigned long *)ptr = x;
- local_irq_restore(flags);
- break;
- default:
- __bad_xchg(ptr, size), ret = 0;
- break;
- }
-
- return ret;
-}
-
-void disable_hlt(void);
-void enable_hlt(void);
-void default_idle(void);
-
-#define xchg(ptr, x) \
- ((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
-
-void free_init_pages(char *what, unsigned long begin, unsigned long end);
-extern char *klimit;
-extern void ret_from_fork(void);
-
-extern void *alloc_maybe_bootmem(size_t size, gfp_t mask);
-extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
-
-#ifdef CONFIG_DEBUG_FS
-extern struct dentry *of_debugfs_root;
-#endif
-
-#define arch_align_stack(x) (x)
-
-#endif /* _ASM_MICROBLAZE_SYSTEM_H */
--
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