10a5b66f62
Add "format" file for syscall exit events:
# cat events/syscalls/sys_exit_open/format
name: sys_exit_open
ID: 344
format:
field:unsigned short common_type; offset:0; size:2;
field:unsigned char common_flags; offset:2; size:1;
field:unsigned char common_preempt_count; offset:3; size:1;
field:int common_pid; offset:4; size:4;
field:int common_tgid; offset:8; size:4;
field:int nr; offset:12; size:4;
field:unsigned long ret; offset:16; size:4;
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <4A8BAF61.3060307@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
74 lines
2 KiB
C
74 lines
2 KiB
C
#ifndef _TRACE_SYSCALL_H
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#define _TRACE_SYSCALL_H
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#include <linux/tracepoint.h>
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#include <linux/unistd.h>
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#include <linux/ftrace_event.h>
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#include <asm/ptrace.h>
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extern void syscall_regfunc(void);
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extern void syscall_unregfunc(void);
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DECLARE_TRACE_WITH_CALLBACK(syscall_enter,
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TP_PROTO(struct pt_regs *regs, long id),
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TP_ARGS(regs, id),
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syscall_regfunc,
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syscall_unregfunc
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);
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DECLARE_TRACE_WITH_CALLBACK(syscall_exit,
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TP_PROTO(struct pt_regs *regs, long ret),
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TP_ARGS(regs, ret),
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syscall_regfunc,
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syscall_unregfunc
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);
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/*
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* A syscall entry in the ftrace syscalls array.
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*
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* @name: name of the syscall
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* @nb_args: number of parameters it takes
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* @types: list of types as strings
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* @args: list of args as strings (args[i] matches types[i])
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* @enter_id: associated ftrace enter event id
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* @exit_id: associated ftrace exit event id
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*/
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struct syscall_metadata {
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const char *name;
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int nb_args;
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const char **types;
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const char **args;
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int enter_id;
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int exit_id;
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};
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#ifdef CONFIG_FTRACE_SYSCALLS
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extern struct syscall_metadata *syscall_nr_to_meta(int nr);
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extern int syscall_name_to_nr(char *name);
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void set_syscall_enter_id(int num, int id);
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void set_syscall_exit_id(int num, int id);
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extern struct trace_event event_syscall_enter;
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extern struct trace_event event_syscall_exit;
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extern int reg_event_syscall_enter(void *ptr);
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extern void unreg_event_syscall_enter(void *ptr);
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extern int reg_event_syscall_exit(void *ptr);
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extern void unreg_event_syscall_exit(void *ptr);
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extern int syscall_enter_format(struct ftrace_event_call *call,
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struct trace_seq *s);
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extern int syscall_exit_format(struct ftrace_event_call *call,
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struct trace_seq *s);
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enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags);
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enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags);
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#endif
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#ifdef CONFIG_EVENT_PROFILE
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int reg_prof_syscall_enter(char *name);
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void unreg_prof_syscall_enter(char *name);
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int reg_prof_syscall_exit(char *name);
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void unreg_prof_syscall_exit(char *name);
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#endif
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#endif /* _TRACE_SYSCALL_H */
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