From d61fc44853f46fb002228b18aa5f30db21fcd4ac Mon Sep 17 00:00:00 2001 From: Pekka Paalanen Date: Mon, 12 May 2008 21:20:57 +0200 Subject: x86: mmiotrace, preview 2 Kconfig.debug, Makefile and testmmiotrace.c style fixes. Use real mutex instead of mutex. Fix failure path in register probe func. kmmio: RCU read-locked over single stepping. Generate mapping id's. Make mmio-mod.c built-in and rewrite its locking. Add debugfs file to enable/disable mmiotracing. kmmio: use irqsave spinlocks. Lots of cleanups in mmio-mod.c Marker file moved from /proc into debugfs. Call mmiotrace entrypoints directly from ioremap.c. Signed-off-by: Pekka Paalanen Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- include/linux/mmiotrace.h | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/mmiotrace.h b/include/linux/mmiotrace.h index d87a6cd8b686..cb5efd0c7f51 100644 --- a/include/linux/mmiotrace.h +++ b/include/linux/mmiotrace.h @@ -16,11 +16,12 @@ typedef void (*kmmio_post_handler_t)(struct kmmio_probe *, unsigned long condition, struct pt_regs *); struct kmmio_probe { - struct list_head list; + 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 *user_data; }; /* kmmio is active by some kmmio_probes? */ @@ -38,6 +39,21 @@ 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); +/* Called from ioremap.c */ +#ifdef CONFIG_MMIOTRACE +extern void +mmiotrace_ioremap(unsigned long offset, unsigned long size, void __iomem *addr); +extern void mmiotrace_iounmap(volatile void __iomem *addr); +#else +static inline void +mmiotrace_ioremap(unsigned long offset, unsigned long size, void __iomem *addr) +{ +} +static inline void mmiotrace_iounmap(volatile void __iomem *addr) +{ +} +#endif /* CONFIG_MMIOTRACE_HOOKS */ + #endif /* __KERNEL__ */ -- cgit v1.2.3