diff options
Diffstat (limited to 'arch/x86/include/asm/hw_breakpoint.h')
| -rw-r--r-- | arch/x86/include/asm/hw_breakpoint.h | 58 |
1 files changed, 38 insertions, 20 deletions
diff --git a/arch/x86/include/asm/hw_breakpoint.h b/arch/x86/include/asm/hw_breakpoint.h index 3cfca8e2b5f6..0675a7c4c20e 100644 --- a/arch/x86/include/asm/hw_breakpoint.h +++ b/arch/x86/include/asm/hw_breakpoint.h @@ -4,6 +4,11 @@ #ifdef __KERNEL__ #define __ARCH_HW_BREAKPOINT_H +/* + * The name should probably be something dealt in + * a higher level. While dealing with the user + * (display/resolving) + */ struct arch_hw_breakpoint { char *name; /* Contains name of the symbol to set bkpt */ unsigned long address; @@ -12,44 +17,57 @@ struct arch_hw_breakpoint { }; #include <linux/kdebug.h> -#include <linux/hw_breakpoint.h> +#include <linux/percpu.h> +#include <linux/list.h> /* Available HW breakpoint length encodings */ -#define HW_BREAKPOINT_LEN_1 0x40 -#define HW_BREAKPOINT_LEN_2 0x44 -#define HW_BREAKPOINT_LEN_4 0x4c -#define HW_BREAKPOINT_LEN_EXECUTE 0x40 +#define X86_BREAKPOINT_LEN_1 0x40 +#define X86_BREAKPOINT_LEN_2 0x44 +#define X86_BREAKPOINT_LEN_4 0x4c +#define X86_BREAKPOINT_LEN_EXECUTE 0x40 #ifdef CONFIG_X86_64 -#define HW_BREAKPOINT_LEN_8 0x48 +#define X86_BREAKPOINT_LEN_8 0x48 #endif /* Available HW breakpoint type encodings */ /* trigger on instruction execute */ -#define HW_BREAKPOINT_EXECUTE 0x80 +#define X86_BREAKPOINT_EXECUTE 0x80 /* trigger on memory write */ -#define HW_BREAKPOINT_WRITE 0x81 +#define X86_BREAKPOINT_WRITE 0x81 /* trigger on memory read or write */ -#define HW_BREAKPOINT_RW 0x83 +#define X86_BREAKPOINT_RW 0x83 /* Total number of available HW breakpoint registers */ #define HBP_NUM 4 -extern struct hw_breakpoint *hbp_kernel[HBP_NUM]; -DECLARE_PER_CPU(struct hw_breakpoint*, this_hbp_kernel[HBP_NUM]); -extern unsigned int hbp_user_refcount[HBP_NUM]; +struct perf_event; +struct pmu; -extern void arch_install_thread_hw_breakpoint(struct task_struct *tsk); -extern void arch_uninstall_thread_hw_breakpoint(void); extern int arch_check_va_in_userspace(unsigned long va, u8 hbp_len); -extern int arch_validate_hwbkpt_settings(struct hw_breakpoint *bp, - struct task_struct *tsk); -extern void arch_update_user_hw_breakpoint(int pos, struct task_struct *tsk); -extern void arch_flush_thread_hw_breakpoint(struct task_struct *tsk); -extern void arch_update_kernel_hw_breakpoint(void *); +extern int arch_validate_hwbkpt_settings(struct perf_event *bp, + struct task_struct *tsk); extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused, - unsigned long val, void *data); + unsigned long val, void *data); + + +int arch_install_hw_breakpoint(struct perf_event *bp); +void arch_uninstall_hw_breakpoint(struct perf_event *bp); +void hw_breakpoint_pmu_read(struct perf_event *bp); +void hw_breakpoint_pmu_unthrottle(struct perf_event *bp); + +extern void +arch_fill_perf_breakpoint(struct perf_event *bp); + +unsigned long encode_dr7(int drnum, unsigned int len, unsigned int type); +int decode_dr7(unsigned long dr7, int bpnum, unsigned *len, unsigned *type); + +extern int arch_bp_generic_fields(int x86_len, int x86_type, + int *gen_len, int *gen_type); + +extern struct pmu perf_ops_bp; + #endif /* __KERNEL__ */ #endif /* _I386_HW_BREAKPOINT_H */ |