mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-21 11:44:01 +08:00
d2709c7ce4
Make perf build for x86 once the UAPI disintegration patches for that arch have been applied by adding the appropriate -I flags - in the right order - and then converting some #includes that use ../.. notation to find main kernel headerfiles to use <asm/foo.h> and <linux/foo.h> instead. Note that -Iarch/foo/include/uapi is present _before_ -Iarch/foo/include. This makes sure we get the userspace version of the pt_regs struct. Ideally, we wouldn't have the latter -I flag at all, but unfortunately we want asm/svm.h and asm/vmx.h in builtin-kvm.c and these aren't part of the UAPI - at least not for x86. I wonder if the bits outside of the __KERNEL__ guards *should* be transferred there. I note also that perf seems to do its dependency handling manually by listing all the header files it might want to use in LIB_H in the Makefile. Can this be changed to use -MD? Note that to do make this work, we need to export and UAPI disintegrate linux/hw_breakpoint.h, which I think should've been exported previously so that perf can access the bits. We have to do this in the same patch to maintain bisectability. Signed-off-by: David Howells <dhowells@redhat.com>
128 lines
3.8 KiB
C
128 lines
3.8 KiB
C
#ifndef _LINUX_HW_BREAKPOINT_H
|
|
#define _LINUX_HW_BREAKPOINT_H
|
|
|
|
#include <linux/perf_event.h>
|
|
#include <uapi/linux/hw_breakpoint.h>
|
|
|
|
#ifdef CONFIG_HAVE_HW_BREAKPOINT
|
|
|
|
extern int __init init_hw_breakpoint(void);
|
|
|
|
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 void ptrace_breakpoint_init(struct perf_event_attr *attr)
|
|
{
|
|
hw_breakpoint_init(attr);
|
|
attr->exclude_kernel = 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,
|
|
void *context,
|
|
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,
|
|
void *context,
|
|
int cpu);
|
|
|
|
extern struct perf_event * __percpu *
|
|
register_wide_hw_breakpoint(struct perf_event_attr *attr,
|
|
perf_overflow_handler_t triggered,
|
|
void *context);
|
|
|
|
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 * __percpu *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 int __init init_hw_breakpoint(void) { return 0; }
|
|
|
|
static inline struct perf_event *
|
|
register_user_hw_breakpoint(struct perf_event_attr *attr,
|
|
perf_overflow_handler_t triggered,
|
|
void *context,
|
|
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,
|
|
void *context,
|
|
int cpu) { return NULL; }
|
|
static inline struct perf_event * __percpu *
|
|
register_wide_hw_breakpoint(struct perf_event_attr *attr,
|
|
perf_overflow_handler_t triggered,
|
|
void *context) { 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 * __percpu *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 /* _LINUX_HW_BREAKPOINT_H */
|