mirror of
https://github.com/torvalds/linux.git
synced 2024-11-02 02:01:29 +00:00
030896885a
This patch adds support for the AArch64 performance counters. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/*
|
|
* Based on arch/arm/include/asm/pmu.h
|
|
*
|
|
* Copyright (C) 2009 picoChip Designs Ltd, Jamie Iles
|
|
* Copyright (C) 2012 ARM Ltd.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#ifndef __ASM_PMU_H
|
|
#define __ASM_PMU_H
|
|
|
|
#ifdef CONFIG_HW_PERF_EVENTS
|
|
|
|
/* The events for a given PMU register set. */
|
|
struct pmu_hw_events {
|
|
/*
|
|
* The events that are active on the PMU for the given index.
|
|
*/
|
|
struct perf_event **events;
|
|
|
|
/*
|
|
* A 1 bit for an index indicates that the counter is being used for
|
|
* an event. A 0 means that the counter can be used.
|
|
*/
|
|
unsigned long *used_mask;
|
|
|
|
/*
|
|
* Hardware lock to serialize accesses to PMU registers. Needed for the
|
|
* read/modify/write sequences.
|
|
*/
|
|
raw_spinlock_t pmu_lock;
|
|
};
|
|
|
|
struct arm_pmu {
|
|
struct pmu pmu;
|
|
cpumask_t active_irqs;
|
|
const char *name;
|
|
irqreturn_t (*handle_irq)(int irq_num, void *dev);
|
|
void (*enable)(struct hw_perf_event *evt, int idx);
|
|
void (*disable)(struct hw_perf_event *evt, int idx);
|
|
int (*get_event_idx)(struct pmu_hw_events *hw_events,
|
|
struct hw_perf_event *hwc);
|
|
int (*set_event_filter)(struct hw_perf_event *evt,
|
|
struct perf_event_attr *attr);
|
|
u32 (*read_counter)(int idx);
|
|
void (*write_counter)(int idx, u32 val);
|
|
void (*start)(void);
|
|
void (*stop)(void);
|
|
void (*reset)(void *);
|
|
int (*map_event)(struct perf_event *event);
|
|
int num_events;
|
|
atomic_t active_events;
|
|
struct mutex reserve_mutex;
|
|
u64 max_period;
|
|
struct platform_device *plat_device;
|
|
struct pmu_hw_events *(*get_hw_events)(void);
|
|
};
|
|
|
|
#define to_arm_pmu(p) (container_of(p, struct arm_pmu, pmu))
|
|
|
|
int __init armpmu_register(struct arm_pmu *armpmu, char *name, int type);
|
|
|
|
u64 armpmu_event_update(struct perf_event *event,
|
|
struct hw_perf_event *hwc,
|
|
int idx);
|
|
|
|
int armpmu_event_set_period(struct perf_event *event,
|
|
struct hw_perf_event *hwc,
|
|
int idx);
|
|
|
|
#endif /* CONFIG_HW_PERF_EVENTS */
|
|
#endif /* __ASM_PMU_H */
|