Commit-ID: eeac19a7efa150231e4a6bb110d6f27500bcc8ce
Gitweb: http://git.kernel.org/tip/eeac19a7efa150231e4a6bb110d6f27500bcc8ce
Author: Jason Baron <jbaron@xxxxxxxxxx>
AuthorDate: Mon, 10 Aug 2009 16:52:13 -0400
Committer: Frederic Weisbecker <fweisbec@xxxxxxxxx>
CommitDate: Tue, 11 Aug 2009 20:35:25 +0200
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@xxxxxxxxxx>
Cc: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
Cc: Jiaying Zhang <jiayingz@xxxxxxxxxx>
Cc: Martin Bligh <mbligh@xxxxxxxxxx>
Cc: Li Zefan <lizf@xxxxxxxxxxxxxx>
Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
---
arch/x86/kernel/ftrace.c | 16 ++++++++++++++++
1 files changed, 16 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index 8e96634..afb31d7 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;
--
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