From eeac19a7efa150231e4a6bb110d6f27500bcc8ce Mon Sep 17 00:00:00 2001 From: Jason Baron <jbaron@redhat.com> Date: Mon, 10 Aug 2009 16:52:13 -0400 Subject: [PATCH] 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> --- arch/x86/kernel/ftrace.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index 8e9663413b7f..afb31d72618d 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -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; -- 2.34.1