LXR linux/include/trace/syscall.h

   1#ifndef _TRACE_SYSCALL_H
   2#define _TRACE_SYSCALL_H
   3
   4#include <linux/tracepoint.h>
   5#include <linux/unistd.h>
   6#include <linux/ftrace_event.h>
   7
   8#include <asm/ptrace.h>
   9
  10
  11/*
  12 * A syscall entry in the ftrace syscalls array.
  13 *
  14 * @name: name of the syscall
  15 * @syscall_nr: number of the syscall
  16 * @nb_args: number of parameters it takes
  17 * @types: list of types as strings
  18 * @args: list of args as strings (args[i] matches types[i])
  19 * @enter_event: associated syscall_enter trace event
  20 * @exit_event: associated syscall_exit trace event
  21 */
  22struct syscall_metadata {
  23        const char      *name;
  24        int             syscall_nr;
  25        int             nb_args;
  26        const char      **types;
  27        const char      **args;
  28        struct list_head enter_fields;
  29        struct list_head exit_fields;
  30
  31        struct ftrace_event_call *enter_event;
  32        struct ftrace_event_call *exit_event;
  33};
  34
  35#ifdef CONFIG_FTRACE_SYSCALLS
  36extern unsigned long arch_syscall_addr(int nr);
  37extern int init_syscall_trace(struct ftrace_event_call *call);
  38
  39extern int reg_event_syscall_enter(struct ftrace_event_call *call);
  40extern void unreg_event_syscall_enter(struct ftrace_event_call *call);
  41extern int reg_event_syscall_exit(struct ftrace_event_call *call);
  42extern void unreg_event_syscall_exit(struct ftrace_event_call *call);
  43extern int
  44ftrace_format_syscall(struct ftrace_event_call *call, struct trace_seq *s);
  45enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags,
  46                                      struct trace_event *event);
  47enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags,
  48                                     struct trace_event *event);
  49#endif
  50
  51#ifdef CONFIG_PERF_EVENTS
  52int perf_sysenter_enable(struct ftrace_event_call *call);
  53void perf_sysenter_disable(struct ftrace_event_call *call);
  54int perf_sysexit_enable(struct ftrace_event_call *call);
  55void perf_sysexit_disable(struct ftrace_event_call *call);
  56#endif
  57
  58#endif /* _TRACE_SYSCALL_H */
  59