Stricted
250 lines
6.9 KiB
C
250 lines
6.9 KiB
C
#ifndef MET_DRV
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#define MET_DRV
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#include <linux/version.h>
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#include <linux/device.h>
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#include <linux/percpu.h>
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#include <linux/hardirq.h>
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extern int met_mode;
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#define MET_MODE_TRACE_CMD_OFFSET (1)
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#define MET_MODE_TRACE_CMD (1<<MET_MODE_TRACE_CMD_OFFSET)
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#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 10, 0)
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#define MET_PRINTK(FORMAT, args...) \
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do { \
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if (met_mode & MET_MODE_TRACE_CMD) \
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trace_printk("%s: " FORMAT, __func__, ##args); \
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else \
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trace_printk(FORMAT, ##args); \
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} while (0)
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#else
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#define MET_STRBUF_SIZE 1024
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DECLARE_PER_CPU(char[MET_STRBUF_SIZE], met_strbuf_nmi);
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DECLARE_PER_CPU(char[MET_STRBUF_SIZE], met_strbuf_irq);
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DECLARE_PER_CPU(char[MET_STRBUF_SIZE], met_strbuf_sirq);
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DECLARE_PER_CPU(char[MET_STRBUF_SIZE], met_strbuf);
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#ifdef CONFIG_FTRACE
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#define TRACE_PUTS(p) \
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do { \
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trace_puts(pmet_strbuf); \
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} while (0)
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#else
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#define TRACE_PUTS(p) do {} while (0)
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#endif
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#define MET_PRINTK(FORMAT, args...) \
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do { \
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char *pmet_strbuf; \
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preempt_disable(); \
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if (in_nmi()) \
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pmet_strbuf = per_cpu(met_strbuf_nmi, smp_processor_id()); \
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else if (in_irq()) \
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pmet_strbuf = per_cpu(met_strbuf_irq, smp_processor_id()); \
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else if (in_softirq()) \
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pmet_strbuf = per_cpu(met_strbuf_sirq, smp_processor_id()); \
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else \
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pmet_strbuf = per_cpu(met_strbuf, smp_processor_id()); \
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if (met_mode & MET_MODE_TRACE_CMD) \
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snprintf(pmet_strbuf, MET_STRBUF_SIZE, "%s: " FORMAT, __func__, ##args); \
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else \
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snprintf(pmet_strbuf, MET_STRBUF_SIZE, FORMAT, ##args); \
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TRACE_PUTS(pmet_strbuf); \
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preempt_enable_no_resched(); \
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} while (0)
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#endif
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#define MET_FTRACE_PRINTK(TRACE_NAME, args...) \
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do { \
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trace_##TRACE_NAME(args); \
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} while (0)
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#define MET_TYPE_PMU 1
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#define MET_TYPE_BUS 2
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#define MET_TYPE_MISC 3
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struct metdevice {
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struct list_head list;
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int type;
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const char *name;
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struct module *owner;
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struct kobject *kobj;
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int (*create_subfs) (struct kobject *parent);
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void (*delete_subfs) (void);
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int mode;
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int cpu_related;
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int polling_interval;
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int polling_count_reload;
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int __percpu *polling_count;
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void (*start) (void);
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void (*stop) (void);
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int (*reset) (void);
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void (*timed_polling) (unsigned long long stamp, int cpu);
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void (*tagged_polling) (unsigned long long stamp, int cpu);
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int (*print_help) (char *buf, int len);
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int (*print_header) (char *buf, int len);
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int (*process_argument) (const char *arg, int len);
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struct list_head exlist; /* for linked list before register */
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void *reversed1;
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};
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int met_register(struct metdevice *met);
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int met_deregister(struct metdevice *met);
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int met_set_platform(const char *plf_name, int flag);
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int met_set_topology(const char *topology_name, int flag);
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int met_devlink_add(struct metdevice *met);
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int met_devlink_del(struct metdevice *met);
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int met_devlink_register_all(void);
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int met_devlink_deregister_all(void);
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int fs_reg(void);
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void fs_unreg(void);
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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 MET_DEFINE_PROBE(probe_name, proto) \
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static void probe_##probe_name(PARAMS(proto))
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# define MET_REGISTER_TRACE(probe_name) \
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register_trace_##probe_name(probe_##probe_name)
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# define MET_UNREGISTER_TRACE(probe_name) \
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unregister_trace_##probe_name(probe_##probe_name)
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#else
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# define MET_DEFINE_PROBE(probe_name, proto) \
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static void probe_##probe_name(void *data, PARAMS(proto))
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# define MET_REGISTER_TRACE(probe_name) \
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register_trace_##probe_name(probe_##probe_name, NULL)
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# define MET_UNREGISTER_TRACE(probe_name) \
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unregister_trace_##probe_name(probe_##probe_name, NULL)
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#endif
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/* ====================== Tagging API ================================ */
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#define MAX_EVENT_CLASS 31
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#define MAX_TAGNAME_LEN 128
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#define MET_CLASS_ALL 0x80000000
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/* IOCTL commands of MET tagging */
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typedef struct _mtag_cmd_t {
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unsigned int class_id;
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unsigned int value;
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unsigned int slen;
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char tname[MAX_TAGNAME_LEN];
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void *data;
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unsigned int size;
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} mtag_cmd_t;
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#define TYPE_START 1
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#define TYPE_END 2
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#define TYPE_ONESHOT 3
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#define TYPE_ENABLE 4
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#define TYPE_DISABLE 5
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#define TYPE_REC_SET 6
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#define TYPE_DUMP 7
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#define TYPE_DUMP_SIZE 8
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#define TYPE_DUMP_SAVE 9
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#define TYPE_USRDATA 10
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/* Use 'm' as magic number */
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#define MTAG_IOC_MAGIC 'm'
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/* Please use a different 8-bit number in your code */
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#define MTAG_CMD_START _IOW(MTAG_IOC_MAGIC, TYPE_START, mtag_cmd_t)
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#define MTAG_CMD_END _IOW(MTAG_IOC_MAGIC, TYPE_END, mtag_cmd_t)
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#define MTAG_CMD_ONESHOT _IOW(MTAG_IOC_MAGIC, TYPE_ONESHOT, mtag_cmd_t)
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#define MTAG_CMD_ENABLE _IOW(MTAG_IOC_MAGIC, TYPE_ENABLE, int)
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#define MTAG_CMD_DISABLE _IOW(MTAG_IOC_MAGIC, TYPE_DISABLE, int)
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#define MTAG_CMD_REC_SET _IOW(MTAG_IOC_MAGIC, TYPE_REC_SET, int)
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#define MTAG_CMD_DUMP _IOW(MTAG_IOC_MAGIC, TYPE_DUMP, mtag_cmd_t)
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#define MTAG_CMD_DUMP_SIZE _IOWR(MTAG_IOC_MAGIC, TYPE_DUMP_SIZE, int)
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#define MTAG_CMD_DUMP_SAVE _IOW(MTAG_IOC_MAGIC, TYPE_DUMP_SAVE, mtag_cmd_t)
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#define MTAG_CMD_USRDATA _IOW(MTAG_IOC_MAGIC, TYPE_USRDATA, mtag_cmd_t)
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/* include file */
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#ifndef MET_USER_EVENT_SUPPORT
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#define met_tag_init() (0)
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#define met_tag_uninit() (0)
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#define met_tag_start(id, name) (0)
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#define met_tag_end(id, name) (0)
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#define met_tag_oneshot(id, name, value) (0)
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#define met_tag_userdata(pData) (0)
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#define met_tag_dump(id, name, data, length) (0)
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#define met_tag_disable(id) (0)
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#define met_tag_enable(id) (0)
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#define met_set_dump_buffer(size) (0)
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#define met_save_dump_buffer(pathname) (0)
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#define met_save_log(pathname) (0)
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#define met_record_on() (0)
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#define met_record_off() (0)
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#define met_show_bw_limiter() (0)
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#define met_reg_bw_limiter() (0)
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#else
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#include <linux/kernel.h>
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int __attribute__((weak)) met_tag_init(void);
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int __attribute__((weak)) met_tag_uninit(void);
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int __attribute__((weak)) met_tag_start(unsigned int class_id,
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const char *name);
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int __attribute__((weak)) met_tag_end(unsigned int class_id,
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const char *name);
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int __attribute__((weak)) met_tag_oneshot(unsigned int class_id,
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const char *name,
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unsigned int value);
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int met_tag_userdata(char * pData);
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int __attribute__((weak)) met_tag_dump(unsigned int class_id,
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const char *name,
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void *data,
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unsigned int length);
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int __attribute__((weak)) met_tag_disable(unsigned int class_id);
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int __attribute__((weak)) met_tag_enable(unsigned int class_id);
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int __attribute__((weak)) met_set_dump_buffer(int size);
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int __attribute__((weak)) met_save_dump_buffer(const char *pathname);
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int __attribute__((weak)) met_save_log(const char *pathname);
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int __attribute__((weak)) met_show_bw_limiter(void);
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int __attribute__((weak)) met_reg_bw_limiter(void *fp);
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#define met_record_on() tracing_on()
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#define met_record_off() tracing_off()
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#endif /* MET_USER_EVENT_SUPPORT */
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#endif /* MET_DRV */
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