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tracing: Create generic syscall TRACE_EVENTs

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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>
This commit is contained in:
Josh Stone
2009-08-24 14:43:14 -07:00
committed by Frederic Weisbecker
parent 9741987586
commit 1c569f0264
5 changed files with 88 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files

70
include/trace/events/syscalls.h Normal file
View File

@@ -0,0 +1,70 @@
#undef TRACE_SYSTEM
#define TRACE_SYSTEM syscalls
#if !defined(_TRACE_EVENTS_SYSCALLS_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_EVENTS_SYSCALLS_H
#include <linux/tracepoint.h>
#include <asm/ptrace.h>
#include <asm/syscall.h>
#ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS
extern void syscall_regfunc(void);
extern void syscall_unregfunc(void);
TRACE_EVENT_FN(sys_enter,
TP_PROTO(struct pt_regs *regs, long id),
TP_ARGS(regs, id),
TP_STRUCT__entry(
__field( long, id )
__array( unsigned long, args, 6 )
),
TP_fast_assign(
__entry->id = id;
syscall_get_arguments(current, regs, 0, 6, __entry->args);
),
TP_printk("NR %ld (%lx, %lx, %lx, %lx, %lx, %lx)",
__entry->id,
__entry->args[0], __entry->args[1], __entry->args[2],
__entry->args[3], __entry->args[4], __entry->args[5]),
syscall_regfunc, syscall_unregfunc
);
TRACE_EVENT_FN(sys_exit,
TP_PROTO(struct pt_regs *regs, long ret),
TP_ARGS(regs, ret),
TP_STRUCT__entry(
__field( long, id )
__field( long, ret )
),
TP_fast_assign(
__entry->id = syscall_get_nr(current, regs);
__entry->ret = ret;
),
TP_printk("NR %ld = %ld",
__entry->id, __entry->ret),
syscall_regfunc, syscall_unregfunc
);
#endif /* CONFIG_HAVE_SYSCALL_TRACEPOINTS */
#endif /* _TRACE_EVENTS_SYSCALLS_H */
/* This part must be outside protection */
#include <trace/define_trace.h>

17
include/trace/syscall.h
View File

@@ -8,23 +8,6 @@
#include <asm/ptrace.h>
#ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS
extern void syscall_regfunc(void);
extern void syscall_unregfunc(void);
DECLARE_TRACE(syscall_enter,
TP_PROTO(struct pt_regs *regs, long id),
TP_ARGS(regs, id)
);
DECLARE_TRACE(syscall_exit,
TP_PROTO(struct pt_regs *regs, long ret),
TP_ARGS(regs, ret)
);
#endif
/*
* A syscall entry in the ftrace syscalls array.
*