153 lines
5.3 KiB
C
153 lines
5.3 KiB
C
/**
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* Copyright (C) ARM Limited 2010-2014. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef GATOR_H_
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#define GATOR_H_
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#include <linux/version.h>
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#include <linux/fs.h>
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#include <linux/mm.h>
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#include <linux/list.h>
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#define GATOR_PERF_SUPPORT (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0))
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#define GATOR_PERF_PMU_SUPPORT (GATOR_PERF_SUPPORT && defined(CONFIG_PERF_EVENTS) && (!(defined(__arm__) || defined(__aarch64__)) || defined(CONFIG_HW_PERF_EVENTS)))
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#define GATOR_NO_PERF_SUPPORT (!(GATOR_PERF_SUPPORT))
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#define GATOR_CPU_FREQ_SUPPORT ((LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 38)) && defined(CONFIG_CPU_FREQ))
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#define GATOR_IKS_SUPPORT defined(CONFIG_BL_SWITCHER)
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/* cpu ids */
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#define ARM1136 0xb36
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#define ARM1156 0xb56
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#define ARM1176 0xb76
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#define ARM11MPCORE 0xb02
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#define CORTEX_A5 0xc05
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#define CORTEX_A7 0xc07
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#define CORTEX_A8 0xc08
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#define CORTEX_A9 0xc09
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#define CORTEX_A15 0xc0f
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#define CORTEX_A17 0xc0e
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#define SCORPION 0x00f
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#define SCORPIONMP 0x02d
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#define KRAITSIM 0x049
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#define KRAIT 0x04d
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#define KRAIT_S4_PRO 0x06f
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#define CORTEX_A53 0xd03
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#define CORTEX_A57 0xd07
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#define AARCH64 0xd0f
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#define OTHER 0xfff
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/* gpu enums */
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#define MALI_4xx 1
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#define MALI_MIDGARD 2
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#define MAXSIZE_CORE_NAME 32
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struct gator_cpu {
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const int cpuid;
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/* Human readable name */
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const char core_name[MAXSIZE_CORE_NAME];
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/* gatorfs event and Perf PMU name */
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const char *const pmnc_name;
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/* compatible from Documentation/devicetree/bindings/arm/cpus.txt */
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const char *const dt_name;
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const int pmnc_counters;
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};
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const struct gator_cpu *gator_find_cpu_by_cpuid(const u32 cpuid);
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const struct gator_cpu *gator_find_cpu_by_pmu_name(const char *const name);
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/******************************************************************************
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* Filesystem
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******************************************************************************/
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struct dentry *gatorfs_mkdir(struct super_block *sb, struct dentry *root,
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char const *name);
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int gatorfs_create_ulong(struct super_block *sb, struct dentry *root,
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char const *name, unsigned long *val);
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int gatorfs_create_ro_ulong(struct super_block *sb, struct dentry *root,
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char const *name, unsigned long *val);
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/******************************************************************************
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* Tracepoints
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******************************************************************************/
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 32)
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# error Kernels prior to 2.6.32 not supported
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#elif LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35)
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# define GATOR_DEFINE_PROBE(probe_name, proto) \
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static void probe_##probe_name(PARAMS(proto))
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# define GATOR_REGISTER_TRACE(probe_name) \
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register_trace_##probe_name(probe_##probe_name)
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# define GATOR_UNREGISTER_TRACE(probe_name) \
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unregister_trace_##probe_name(probe_##probe_name)
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#elif LINUX_VERSION_CODE < KERNEL_VERSION(3, 15, 0)
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# define GATOR_DEFINE_PROBE(probe_name, proto) \
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static void probe_##probe_name(void *data, PARAMS(proto))
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# define GATOR_REGISTER_TRACE(probe_name) \
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register_trace_##probe_name(probe_##probe_name, NULL)
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# define GATOR_UNREGISTER_TRACE(probe_name) \
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unregister_trace_##probe_name(probe_##probe_name, NULL)
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#else
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# define GATOR_DEFINE_PROBE(probe_name, proto) \
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extern struct tracepoint *gator_tracepoint_##probe_name; \
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static void probe_##probe_name(void *data, PARAMS(proto))
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# define GATOR_REGISTER_TRACE(probe_name) \
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((gator_tracepoint_##probe_name == NULL) || tracepoint_probe_register(gator_tracepoint_##probe_name, probe_##probe_name, NULL))
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# define GATOR_UNREGISTER_TRACE(probe_name) \
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tracepoint_probe_unregister(gator_tracepoint_##probe_name, probe_##probe_name, NULL)
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#endif
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/******************************************************************************
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* Events
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******************************************************************************/
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struct gator_interface {
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/* Complementary function to init */
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void (*shutdown)(void);
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int (*create_files)(struct super_block *sb, struct dentry *root);
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int (*start)(void);
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/* Complementary function to start */
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void (*stop)(void);
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int (*online)(int **buffer, bool migrate);
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int (*offline)(int **buffer, bool migrate);
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/* called in process context but may not be running on core 'cpu' */
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void (*online_dispatch)(int cpu, bool migrate);
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/* called in process context but may not be running on core 'cpu' */
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void (*offline_dispatch)(int cpu, bool migrate);
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int (*read)(int **buffer, bool sched_switch);
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int (*read64)(long long **buffer);
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int (*read_proc)(long long **buffer, struct task_struct *);
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struct list_head list;
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};
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int gator_events_install(struct gator_interface *interface);
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int gator_events_get_key(void);
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u32 gator_cpuid(void);
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void gator_backtrace_handler(struct pt_regs *const regs);
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void gator_marshal_activity_switch(int core, int key, int activity, int pid);
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#if !GATOR_IKS_SUPPORT
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#define get_physical_cpu() smp_processor_id()
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#define lcpu_to_pcpu(lcpu) lcpu
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#define pcpu_to_lcpu(pcpu) pcpu
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#else
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#define get_physical_cpu() lcpu_to_pcpu(get_logical_cpu())
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int lcpu_to_pcpu(const int lcpu);
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int pcpu_to_lcpu(const int pcpu);
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#endif
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#define get_logical_cpu() smp_processor_id()
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#define on_primary_core() (get_logical_cpu() == 0)
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#endif /* GATOR_H_ */
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