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authorJason Baron <jbaron@redhat.com>2009-08-10 16:52:13 -0400
committerFrederic Weisbecker <fweisbec@gmail.com>2009-08-11 20:35:25 +0200
commiteeac19a7efa150231e4a6bb110d6f27500bcc8ce (patch)
tree99b59b07b3bd56c8ce1a352081280c8de4c177bb /arch/x86/kernel/ftrace.c
parent7770841e63730d62928b0879498064e9614b2ce0 (diff)
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>
Diffstat (limited to 'arch/x86/kernel/ftrace.c')
-rw-r--r--arch/x86/kernel/ftrace.c16
1 files changed, 16 insertions, 0 deletions
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;