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tracing: Map syscall name to number

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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>
This commit is contained in:
Jason Baron 2009-08-10 16:52:13 -04:00 committed by Frederic Weisbecker
parent 7770841e63
commit eeac19a7ef
1 changed files with 16 additions and 0 deletions
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16
arch/x86/kernel/ftrace.c
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@ -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;