1c569f0264
This converts the syscall_enter/exit tracepoints into TRACE_EVENTs, so you can have generic ftrace events that capture all system calls with arguments and return values. These generic events are also renamed to sys_enter/exit, so they're more closely aligned to the specific sys_enter_foo events. Signed-off-by: Josh Stone <jistone@redhat.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Jiaying Zhang <jiayingz@google.com> Cc: Martin Bligh <mbligh@google.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> LKML-Reference: <1251150194-1713-5-git-send-email-jistone@redhat.com> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
64 lines
2 KiB
C
64 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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/*
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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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* @enter_event: associated syscall_enter trace event
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* @exit_event: associated syscall_exit trace event
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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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struct ftrace_event_call *enter_event;
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struct ftrace_event_call *exit_event;
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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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extern int syscall_enter_define_fields(struct ftrace_event_call *call);
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extern int syscall_exit_define_fields(struct ftrace_event_call *call);
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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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