Contributors: 19
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| K.Prasad |
180 |
34.48% |
3 |
6.12% |
| Ravi Bangoria |
121 |
23.18% |
14 |
28.57% |
| Michael Neuling |
114 |
21.84% |
4 |
8.16% |
| Frédéric Weisbecker |
17 |
3.26% |
2 |
4.08% |
| Christophe Leroy |
17 |
3.26% |
4 |
8.16% |
| Paul Mackerras |
16 |
3.07% |
4 |
8.16% |
| Linus Torvalds (pre-git) |
12 |
2.30% |
5 |
10.20% |
| Mathieu Malaterre |
9 |
1.72% |
1 |
2.04% |
| Zwane Mwaikambo |
5 |
0.96% |
1 |
2.04% |
| Anton Blanchard |
5 |
0.96% |
1 |
2.04% |
| Naveen N. Rao |
5 |
0.96% |
1 |
2.04% |
| Linus Torvalds |
5 |
0.96% |
2 |
4.08% |
| Benjamin Herrenschmidt |
4 |
0.77% |
1 |
2.04% |
| Benjamin Gray |
4 |
0.77% |
1 |
2.04% |
| Dave Kleikamp |
3 |
0.57% |
1 |
2.04% |
| Thomas Gleixner |
2 |
0.38% |
1 |
2.04% |
| Paul Gortmaker |
1 |
0.19% |
1 |
2.04% |
| David Howells |
1 |
0.19% |
1 |
2.04% |
| Randy Dunlap |
1 |
0.19% |
1 |
2.04% |
| Total |
522 |
|
49 |
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* PowerPC BookIII S hardware breakpoint definitions
*
* Copyright 2010, IBM Corporation.
* Author: K.Prasad <prasad@linux.vnet.ibm.com>
*/
#ifndef _PPC_BOOK3S_64_HW_BREAKPOINT_H
#define _PPC_BOOK3S_64_HW_BREAKPOINT_H
#include <asm/cpu_has_feature.h>
#ifdef __KERNEL__
struct arch_hw_breakpoint {
unsigned long address;
u16 type;
u16 len; /* length of the target data symbol */
u16 hw_len; /* length programmed in hw */
u8 flags;
bool perf_single_step; /* temporarily uninstalled for a perf single step */
};
/* Note: Don't change the first 6 bits below as they are in the same order
* as the dabr and dabrx.
*/
#define HW_BRK_TYPE_READ 0x01
#define HW_BRK_TYPE_WRITE 0x02
#define HW_BRK_TYPE_TRANSLATE 0x04
#define HW_BRK_TYPE_USER 0x08
#define HW_BRK_TYPE_KERNEL 0x10
#define HW_BRK_TYPE_HYP 0x20
#define HW_BRK_TYPE_EXTRANEOUS_IRQ 0x80
/* bits that overlap with the bottom 3 bits of the dabr */
#define HW_BRK_TYPE_RDWR (HW_BRK_TYPE_READ | HW_BRK_TYPE_WRITE)
#define HW_BRK_TYPE_DABR (HW_BRK_TYPE_RDWR | HW_BRK_TYPE_TRANSLATE)
#define HW_BRK_TYPE_PRIV_ALL (HW_BRK_TYPE_USER | HW_BRK_TYPE_KERNEL | \
HW_BRK_TYPE_HYP)
#define HW_BRK_FLAG_DISABLED 0x1
/* Minimum granularity */
#ifdef CONFIG_PPC_8xx
#define HW_BREAKPOINT_SIZE 0x4
#else
#define HW_BREAKPOINT_SIZE 0x8
#endif
#define HW_BREAKPOINT_SIZE_QUADWORD 0x10
#define DABR_MAX_LEN 8
#define DAWR_MAX_LEN 512
static inline int nr_wp_slots(void)
{
return cpu_has_feature(CPU_FTR_DAWR1) ? 2 : 1;
}
bool wp_check_constraints(struct pt_regs *regs, ppc_inst_t instr,
unsigned long ea, int type, int size,
struct arch_hw_breakpoint *info);
void wp_get_instr_detail(struct pt_regs *regs, ppc_inst_t *instr,
int *type, int *size, unsigned long *ea);
#ifdef CONFIG_HAVE_HW_BREAKPOINT
#include <linux/kdebug.h>
#include <asm/reg.h>
#include <asm/debug.h>
struct perf_event_attr;
struct perf_event;
struct pmu;
struct perf_sample_data;
struct task_struct;
extern int hw_breakpoint_slots(int type);
extern int arch_bp_generic_fields(int type, int *gen_bp_type);
extern int arch_check_bp_in_kernelspace(struct arch_hw_breakpoint *hw);
extern int hw_breakpoint_arch_parse(struct perf_event *bp,
const struct perf_event_attr *attr,
struct arch_hw_breakpoint *hw);
extern int hw_breakpoint_exceptions_notify(struct notifier_block *unused,
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);
extern void flush_ptrace_hw_breakpoint(struct task_struct *tsk);
extern struct pmu perf_ops_bp;
extern void ptrace_triggered(struct perf_event *bp,
struct perf_sample_data *data, struct pt_regs *regs);
static inline void hw_breakpoint_disable(void)
{
int i;
struct arch_hw_breakpoint null_brk = {0};
if (!ppc_breakpoint_available())
return;
for (i = 0; i < nr_wp_slots(); i++)
__set_breakpoint(i, &null_brk);
}
extern void thread_change_pc(struct task_struct *tsk, struct pt_regs *regs);
int hw_breakpoint_handler(struct die_args *args);
#else /* CONFIG_HAVE_HW_BREAKPOINT */
static inline void hw_breakpoint_disable(void) { }
static inline void thread_change_pc(struct task_struct *tsk,
struct pt_regs *regs) { }
#endif /* CONFIG_HAVE_HW_BREAKPOINT */
#ifdef CONFIG_PPC_DAWR
extern bool dawr_force_enable;
static inline bool dawr_enabled(void)
{
return dawr_force_enable;
}
int set_dawr(int nr, struct arch_hw_breakpoint *brk);
#else
static inline bool dawr_enabled(void) { return false; }
static inline int set_dawr(int nr, struct arch_hw_breakpoint *brk) { return -1; }
#endif
#endif /* __KERNEL__ */
#endif /* _PPC_BOOK3S_64_HW_BREAKPOINT_H */