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authorLinus Torvalds <torvalds@linux-foundation.org>2009-03-28 23:40:20 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2009-03-28 23:48:38 +0300
commit7c730ccdc1188b97f5c8cb690906242c7ed75c22 (patch)
tree17ccd927e70dadaf59104c53cce892474eb539b2 /include/linux/mmiotrace.h
parent8d735b4148d46446e64d72b22ef0344ee8dc02fa (diff)
parent82268da1b130f763d22d04f7d016bbf6fc8815c2 (diff)
downloadlinux-7c730ccdc1188b97f5c8cb690906242c7ed75c22.tar.xz
Merge branch 'percpu-cpumask-x86-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'percpu-cpumask-x86-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (682 commits) percpu: fix spurious alignment WARN in legacy SMP percpu allocator percpu: generalize embedding first chunk setup helper percpu: more flexibility for @dyn_size of pcpu_setup_first_chunk() percpu: make x86 addr <-> pcpu ptr conversion macros generic linker script: define __per_cpu_load on all SMP capable archs x86: UV: remove uv_flush_tlb_others() WARN_ON percpu: finer grained locking to break deadlock and allow atomic free percpu: move fully free chunk reclamation into a work percpu: move chunk area map extension out of area allocation percpu: replace pcpu_realloc() with pcpu_mem_alloc() and pcpu_mem_free() x86, percpu: setup reserved percpu area for x86_64 percpu, module: implement reserved allocation and use it for module percpu variables percpu: add an indirection ptr for chunk page map access x86: make embedding percpu allocator return excessive free space percpu: use negative for auto for pcpu_setup_first_chunk() arguments percpu: improve first chunk initial area map handling percpu: cosmetic renames in pcpu_setup_first_chunk() percpu: clean up percpu constants x86: un-__init fill_pud/pmd/pte x86: remove vestigial fix_ioremap prototypes ... Manually merge conflicts in arch/ia64/kernel/irq_ia64.c
Diffstat (limited to 'include/linux/mmiotrace.h')
-rw-r--r--include/linux/mmiotrace.h78
1 files changed, 47 insertions, 31 deletions
diff --git a/include/linux/mmiotrace.h b/include/linux/mmiotrace.h
index 139d7c88d9c9..3d1b7bde1283 100644
--- a/include/linux/mmiotrace.h
+++ b/include/linux/mmiotrace.h
@@ -1,5 +1,5 @@
-#ifndef MMIOTRACE_H
-#define MMIOTRACE_H
+#ifndef _LINUX_MMIOTRACE_H
+#define _LINUX_MMIOTRACE_H
#include <linux/types.h>
#include <linux/list.h>
@@ -13,28 +13,34 @@ typedef void (*kmmio_post_handler_t)(struct kmmio_probe *,
unsigned long condition, struct pt_regs *);
struct kmmio_probe {
- struct list_head list; /* kmmio internal list */
- unsigned long addr; /* start location of the probe point */
- unsigned long len; /* length of the probe region */
- kmmio_pre_handler_t pre_handler; /* Called before addr is executed. */
- kmmio_post_handler_t post_handler; /* Called after addr is executed */
- void *private;
+ /* kmmio internal list: */
+ struct list_head list;
+ /* start location of the probe point: */
+ unsigned long addr;
+ /* length of the probe region: */
+ unsigned long len;
+ /* Called before addr is executed: */
+ kmmio_pre_handler_t pre_handler;
+ /* Called after addr is executed: */
+ kmmio_post_handler_t post_handler;
+ void *private;
};
+extern unsigned int kmmio_count;
+
+extern int register_kmmio_probe(struct kmmio_probe *p);
+extern void unregister_kmmio_probe(struct kmmio_probe *p);
+
+#ifdef CONFIG_MMIOTRACE
/* kmmio is active by some kmmio_probes? */
static inline int is_kmmio_active(void)
{
- extern unsigned int kmmio_count;
return kmmio_count;
}
-extern int register_kmmio_probe(struct kmmio_probe *p);
-extern void unregister_kmmio_probe(struct kmmio_probe *p);
-
/* Called from page fault handler. */
extern int kmmio_handler(struct pt_regs *regs, unsigned long addr);
-#ifdef CONFIG_MMIOTRACE
/* Called from ioremap.c */
extern void mmiotrace_ioremap(resource_size_t offset, unsigned long size,
void __iomem *addr);
@@ -43,7 +49,17 @@ extern void mmiotrace_iounmap(volatile void __iomem *addr);
/* For anyone to insert markers. Remember trailing newline. */
extern int mmiotrace_printk(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
-#else
+#else /* !CONFIG_MMIOTRACE: */
+static inline int is_kmmio_active(void)
+{
+ return 0;
+}
+
+static inline int kmmio_handler(struct pt_regs *regs, unsigned long addr)
+{
+ return 0;
+}
+
static inline void mmiotrace_ioremap(resource_size_t offset,
unsigned long size, void __iomem *addr)
{
@@ -63,28 +79,28 @@ static inline int mmiotrace_printk(const char *fmt, ...)
#endif /* CONFIG_MMIOTRACE */
enum mm_io_opcode {
- MMIO_READ = 0x1, /* struct mmiotrace_rw */
- MMIO_WRITE = 0x2, /* struct mmiotrace_rw */
- MMIO_PROBE = 0x3, /* struct mmiotrace_map */
- MMIO_UNPROBE = 0x4, /* struct mmiotrace_map */
- MMIO_UNKNOWN_OP = 0x5, /* struct mmiotrace_rw */
+ MMIO_READ = 0x1, /* struct mmiotrace_rw */
+ MMIO_WRITE = 0x2, /* struct mmiotrace_rw */
+ MMIO_PROBE = 0x3, /* struct mmiotrace_map */
+ MMIO_UNPROBE = 0x4, /* struct mmiotrace_map */
+ MMIO_UNKNOWN_OP = 0x5, /* struct mmiotrace_rw */
};
struct mmiotrace_rw {
- resource_size_t phys; /* PCI address of register */
- unsigned long value;
- unsigned long pc; /* optional program counter */
- int map_id;
- unsigned char opcode; /* one of MMIO_{READ,WRITE,UNKNOWN_OP} */
- unsigned char width; /* size of register access in bytes */
+ resource_size_t phys; /* PCI address of register */
+ unsigned long value;
+ unsigned long pc; /* optional program counter */
+ int map_id;
+ unsigned char opcode; /* one of MMIO_{READ,WRITE,UNKNOWN_OP} */
+ unsigned char width; /* size of register access in bytes */
};
struct mmiotrace_map {
- resource_size_t phys; /* base address in PCI space */
- unsigned long virt; /* base virtual address */
- unsigned long len; /* mapping size */
- int map_id;
- unsigned char opcode; /* MMIO_PROBE or MMIO_UNPROBE */
+ resource_size_t phys; /* base address in PCI space */
+ unsigned long virt; /* base virtual address */
+ unsigned long len; /* mapping size */
+ int map_id;
+ unsigned char opcode; /* MMIO_PROBE or MMIO_UNPROBE */
};
/* in kernel/trace/trace_mmiotrace.c */
@@ -94,4 +110,4 @@ extern void mmio_trace_rw(struct mmiotrace_rw *rw);
extern void mmio_trace_mapping(struct mmiotrace_map *map);
extern int mmio_trace_printk(const char *fmt, va_list args);
-#endif /* MMIOTRACE_H */
+#endif /* _LINUX_MMIOTRACE_H */