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/trace_events.h>
   7#include <linux/thread_info.h>
   8
   9#include <asm/ptrace.h>
  10
  11
  12/*
  13 * A syscall entry in the ftrace syscalls array.
  14 *
  15 * @name: name of the syscall
  16 * @syscall_nr: number of the syscall
  17 * @nb_args: number of parameters it takes
  18 * @types: list of types as strings
  19 * @args: list of args as strings (args[i] matches types[i])
  20 * @enter_fields: list of fields for syscall_enter trace event
  21 * @enter_event: associated syscall_enter trace event
  22 * @exit_event: associated syscall_exit trace event
  23 */
  24struct syscall_metadata {
  25        const char      *name;
  26        int             syscall_nr;
  27        int             nb_args;
  28        const char      **types;
  29        const char      **args;
  30        struct list_head enter_fields;
  31
  32        struct trace_event_call *enter_event;
  33        struct trace_event_call *exit_event;
  34};
  35
  36#if defined(CONFIG_TRACEPOINTS) && defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
  37static inline void syscall_tracepoint_update(struct task_struct *p)
  38{
  39        if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
  40                set_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);
  41        else
  42                clear_tsk_thread_flag(p, TIF_SYSCALL_TRACEPOINT);
  43}
  44#else
  45static inline void syscall_tracepoint_update(struct task_struct *p)
  46{
  47}
  48#endif
  49
  50#endif /* _TRACE_SYSCALL_H */
  51