mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-11-07 04:09:21 +00:00
cd757645fb
Change 'bp_len' type to __u64 to make it work across archs as the s390 architecture watch point length can be upto 2^64. reference: http://lkml.org/lkml/2010/1/25/212 This is an ABI change that is not backward compatible with the previous hardware breakpoint info layout integrated in this development cycle, a rebuilt of perf tools is necessary for versions based on 2.6.33-rc1 - 2.6.33-rc6 to work with a kernel based on this patch. Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: "K. Prasad" <prasad@linux.vnet.ibm.com> Cc: Maneesh Soni <maneesh@in.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin <schwidefsky@de.ibm.com> LKML-Reference: <20100130045518.GA20776@in.ibm.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
127 lines
3.6 KiB
C
127 lines
3.6 KiB
C
#ifndef _LINUX_HW_BREAKPOINT_H
|
|
#define _LINUX_HW_BREAKPOINT_H
|
|
|
|
enum {
|
|
HW_BREAKPOINT_LEN_1 = 1,
|
|
HW_BREAKPOINT_LEN_2 = 2,
|
|
HW_BREAKPOINT_LEN_4 = 4,
|
|
HW_BREAKPOINT_LEN_8 = 8,
|
|
};
|
|
|
|
enum {
|
|
HW_BREAKPOINT_R = 1,
|
|
HW_BREAKPOINT_W = 2,
|
|
HW_BREAKPOINT_X = 4,
|
|
};
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/perf_event.h>
|
|
|
|
#ifdef CONFIG_HAVE_HW_BREAKPOINT
|
|
|
|
static inline void hw_breakpoint_init(struct perf_event_attr *attr)
|
|
{
|
|
memset(attr, 0, sizeof(*attr));
|
|
|
|
attr->type = PERF_TYPE_BREAKPOINT;
|
|
attr->size = sizeof(*attr);
|
|
/*
|
|
* As it's for in-kernel or ptrace use, we want it to be pinned
|
|
* and to call its callback every hits.
|
|
*/
|
|
attr->pinned = 1;
|
|
attr->sample_period = 1;
|
|
}
|
|
|
|
static inline unsigned long hw_breakpoint_addr(struct perf_event *bp)
|
|
{
|
|
return bp->attr.bp_addr;
|
|
}
|
|
|
|
static inline int hw_breakpoint_type(struct perf_event *bp)
|
|
{
|
|
return bp->attr.bp_type;
|
|
}
|
|
|
|
static inline unsigned long hw_breakpoint_len(struct perf_event *bp)
|
|
{
|
|
return bp->attr.bp_len;
|
|
}
|
|
|
|
extern struct perf_event *
|
|
register_user_hw_breakpoint(struct perf_event_attr *attr,
|
|
perf_overflow_handler_t triggered,
|
|
struct task_struct *tsk);
|
|
|
|
/* FIXME: only change from the attr, and don't unregister */
|
|
extern int
|
|
modify_user_hw_breakpoint(struct perf_event *bp, struct perf_event_attr *attr);
|
|
|
|
/*
|
|
* Kernel breakpoints are not associated with any particular thread.
|
|
*/
|
|
extern struct perf_event *
|
|
register_wide_hw_breakpoint_cpu(struct perf_event_attr *attr,
|
|
perf_overflow_handler_t triggered,
|
|
int cpu);
|
|
|
|
extern struct perf_event **
|
|
register_wide_hw_breakpoint(struct perf_event_attr *attr,
|
|
perf_overflow_handler_t triggered);
|
|
|
|
extern int register_perf_hw_breakpoint(struct perf_event *bp);
|
|
extern int __register_perf_hw_breakpoint(struct perf_event *bp);
|
|
extern void unregister_hw_breakpoint(struct perf_event *bp);
|
|
extern void unregister_wide_hw_breakpoint(struct perf_event **cpu_events);
|
|
|
|
extern int dbg_reserve_bp_slot(struct perf_event *bp);
|
|
extern int dbg_release_bp_slot(struct perf_event *bp);
|
|
extern int reserve_bp_slot(struct perf_event *bp);
|
|
extern void release_bp_slot(struct perf_event *bp);
|
|
|
|
extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk);
|
|
|
|
static inline struct arch_hw_breakpoint *counter_arch_bp(struct perf_event *bp)
|
|
{
|
|
return &bp->hw.info;
|
|
}
|
|
|
|
#else /* !CONFIG_HAVE_HW_BREAKPOINT */
|
|
|
|
static inline struct perf_event *
|
|
register_user_hw_breakpoint(struct perf_event_attr *attr,
|
|
perf_overflow_handler_t triggered,
|
|
struct task_struct *tsk) { return NULL; }
|
|
static inline int
|
|
modify_user_hw_breakpoint(struct perf_event *bp,
|
|
struct perf_event_attr *attr) { return -ENOSYS; }
|
|
static inline struct perf_event *
|
|
register_wide_hw_breakpoint_cpu(struct perf_event_attr *attr,
|
|
perf_overflow_handler_t triggered,
|
|
int cpu) { return NULL; }
|
|
static inline struct perf_event **
|
|
register_wide_hw_breakpoint(struct perf_event_attr *attr,
|
|
perf_overflow_handler_t triggered) { return NULL; }
|
|
static inline int
|
|
register_perf_hw_breakpoint(struct perf_event *bp) { return -ENOSYS; }
|
|
static inline int
|
|
__register_perf_hw_breakpoint(struct perf_event *bp) { return -ENOSYS; }
|
|
static inline void unregister_hw_breakpoint(struct perf_event *bp) { }
|
|
static inline void
|
|
unregister_wide_hw_breakpoint(struct perf_event **cpu_events) { }
|
|
static inline int
|
|
reserve_bp_slot(struct perf_event *bp) {return -ENOSYS; }
|
|
static inline void release_bp_slot(struct perf_event *bp) { }
|
|
|
|
static inline void flush_ptrace_hw_breakpoint(struct task_struct *tsk) { }
|
|
|
|
static inline struct arch_hw_breakpoint *counter_arch_bp(struct perf_event *bp)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
#endif /* CONFIG_HAVE_HW_BREAKPOINT */
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _LINUX_HW_BREAKPOINT_H */
|