Commit eeac19a7 authored Aug 10, 2009 by Jason Baron Committed by Frederic Weisbecker Aug 11, 2009

tracing: Map syscall name to number



Add a new function to support translating a syscall name to number at
runtime.
This allows the syscall event tracer to map syscall names to number.

Signed-off-by: Jason Baron <jbaron@redhat.com>
Cc: Lai Jiangshan <laijs@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: Li Zefan <lizf@cn.fujitsu.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>

parent 7770841e

arch/x86/kernel/ftrace.c

+16 −0

Original line number	Diff line number	Diff line
		@@ -500,6 +500,22 @@ struct syscall_metadata *syscall_nr_to_meta(int nr)
		return syscalls_metadata[nr];
		}

		int syscall_name_to_nr(char *name)
		{
		int i;

		if (!syscalls_metadata)
		return -1;

		for (i = 0; i < FTRACE_SYSCALL_MAX; i++) {
		if (syscalls_metadata[i]) {
		if (!strcmp(syscalls_metadata[i]->name, name))
		return i;
		}
		}
		return -1;
		}

		void arch_init_ftrace_syscalls(void)
		{
		int i;