aboutsummaryrefslogtreecommitdiff
path: root/arch/microblaze/include
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-28 15:58:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-28 15:58:21 -0700
commit0195c00244dc2e9f522475868fa278c473ba7339 (patch)
treef97ca98ae64ede2c33ad3de05ed7bbfa4f4495ed /arch/microblaze/include
parentf21ce8f8447c8be8847dadcfdbcc76b0d7365fa5 (diff)
parent141124c02059eee9dbc5c86ea797b1ca888e77f7 (diff)
downloadlinux-0195c00244dc2e9f522475868fa278c473ba7339.tar.gz
Merge tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system
Pull "Disintegrate and delete asm/system.h" from David Howells: "Here are a bunch of patches to disintegrate asm/system.h into a set of separate bits to relieve the problem of circular inclusion dependencies. I've built all the working defconfigs from all the arches that I can and made sure that they don't break. The reason for these patches is that I recently encountered a circular dependency problem that came about when I produced some patches to optimise get_order() by rewriting it to use ilog2(). This uses bitops - and on the SH arch asm/bitops.h drags in asm-generic/get_order.h by a circuituous route involving asm/system.h. The main difficulty seems to be asm/system.h. It holds a number of low level bits with no/few dependencies that are commonly used (eg. memory barriers) and a number of bits with more dependencies that aren't used in many places (eg. switch_to()). These patches break asm/system.h up into the following core pieces: (1) asm/barrier.h Move memory barriers here. This already done for MIPS and Alpha. (2) asm/switch_to.h Move switch_to() and related stuff here. (3) asm/exec.h Move arch_align_stack() here. Other process execution related bits could perhaps go here from asm/processor.h. (4) asm/cmpxchg.h Move xchg() and cmpxchg() here as they're full word atomic ops and frequently used by atomic_xchg() and atomic_cmpxchg(). (5) asm/bug.h Move die() and related bits. (6) asm/auxvec.h Move AT_VECTOR_SIZE_ARCH here. Other arch headers are created as needed on a per-arch basis." Fixed up some conflicts from other header file cleanups and moving code around that has happened in the meantime, so David's testing is somewhat weakened by that. We'll find out anything that got broken and fix it.. * tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system: (38 commits) Delete all instances of asm/system.h Remove all #inclusions of asm/system.h Add #includes needed to permit the removal of asm/system.h Move all declarations of free_initmem() to linux/mm.h Disintegrate asm/system.h for OpenRISC Split arch_align_stack() out from asm-generic/system.h Split the switch_to() wrapper out of asm-generic/system.h Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h Create asm-generic/barrier.h Make asm-generic/cmpxchg.h #include asm-generic/cmpxchg-local.h Disintegrate asm/system.h for Xtensa Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt] Disintegrate asm/system.h for Tile Disintegrate asm/system.h for Sparc Disintegrate asm/system.h for SH Disintegrate asm/system.h for Score Disintegrate asm/system.h for S390 Disintegrate asm/system.h for PowerPC Disintegrate asm/system.h for PA-RISC Disintegrate asm/system.h for MN10300 ...
Diffstat (limited to 'arch/microblaze/include')
-rw-r--r--arch/microblaze/include/asm/atomic.h1
-rw-r--r--arch/microblaze/include/asm/barrier.h27
-rw-r--r--arch/microblaze/include/asm/cmpxchg.h40
-rw-r--r--arch/microblaze/include/asm/exec.h14
-rw-r--r--arch/microblaze/include/asm/page.h2
-rw-r--r--arch/microblaze/include/asm/processor.h11
-rw-r--r--arch/microblaze/include/asm/setup.h6
-rw-r--r--arch/microblaze/include/asm/switch_to.h24
-rw-r--r--arch/microblaze/include/asm/system.h98
9 files changed, 124 insertions, 99 deletions
diff --git a/arch/microblaze/include/asm/atomic.h b/arch/microblaze/include/asm/atomic.h
index 615f53992c6..472d8bf726d 100644
--- a/arch/microblaze/include/asm/atomic.h
+++ b/arch/microblaze/include/asm/atomic.h
@@ -1,6 +1,7 @@
#ifndef _ASM_MICROBLAZE_ATOMIC_H
#define _ASM_MICROBLAZE_ATOMIC_H
+#include <asm/cmpxchg.h>
#include <asm-generic/atomic.h>
#include <asm-generic/atomic64.h>
diff --git a/arch/microblaze/include/asm/barrier.h b/arch/microblaze/include/asm/barrier.h
new file mode 100644
index 00000000000..df5be3e8704
--- /dev/null
+++ b/arch/microblaze/include/asm/barrier.h
@@ -0,0 +1,27 @@
+/*
+ * 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 nop() asm volatile ("nop")
+
+#define smp_read_barrier_depends() do {} while (0)
+#define read_barrier_depends() do {} while (0)
+
+#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/cmpxchg.h b/arch/microblaze/include/asm/cmpxchg.h
new file mode 100644
index 00000000000..0094859abd9
--- /dev/null
+++ b/arch/microblaze/include/asm/cmpxchg.h
@@ -0,0 +1,40 @@
+#ifndef _ASM_MICROBLAZE_CMPXCHG_H
+#define _ASM_MICROBLAZE_CMPXCHG_H
+
+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_CMPXCHG_H */
diff --git a/arch/microblaze/include/asm/exec.h b/arch/microblaze/include/asm/exec.h
new file mode 100644
index 00000000000..e750de1fe8f
--- /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/page.h b/arch/microblaze/include/asm/page.h
index 352cc2352bd..287c5485d28 100644
--- a/arch/microblaze/include/asm/page.h
+++ b/arch/microblaze/include/asm/page.h
@@ -138,6 +138,8 @@ extern unsigned long memory_start;
extern unsigned long memory_size;
extern unsigned long lowmem_size;
+extern unsigned long kernel_tlb;
+
extern int page_is_ram(unsigned long pfn);
# define phys_to_pfn(phys) (PFN_DOWN(phys))
diff --git a/arch/microblaze/include/asm/processor.h b/arch/microblaze/include/asm/processor.h
index 7283bfb2f7e..510a8e1c16b 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 9f195c09473..0061aa13a34 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);
@@ -47,6 +49,10 @@ 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 00000000000..f45baa2c5e0
--- /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 01228d2b135..00000000000
--- a/arch/microblaze/include/asm/system.h
+++ /dev/null
@@ -1,98 +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);
-void free_initmem(void);
-extern char *klimit;
-extern unsigned long kernel_tlb;
-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 */