tracing: Have ftrace_dump_on_oops kernel parameter take numbers

The kernel parameter for ftrace_dump_on_oops can take a single assignment.
That is, it can be:

  ftrace_dump_on_oops or ftrace_dump_on_oops=orig_cpu

But the content in the sysctl file is a number.

 0 for disabled
 1 for ftrace_dump_on_oops (all CPUs)
 2 for ftrace_dump_on_oops (orig CPU)

Allow the kernel command line to take a number as well to match the sysctl
numbers.

That is:

  ftrace_dump_on_oops=1 is the same as ftrace_dump_on_oops

and

  ftrace_dump_on_oops=2 is the same as ftrace_dump_on_oops=orig_cpu
Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent f3860136
......@@ -197,12 +197,12 @@ __setup("ftrace=", set_cmdline_ftrace);
static int __init set_ftrace_dump_on_oops(char *str)
{
if (*str++ != '=' || !*str) {
if (*str++ != '=' || !*str || !strcmp("1", str)) {
ftrace_dump_on_oops = DUMP_ALL;
return 1;
}
if (!strcmp("orig_cpu", str)) {
if (!strcmp("orig_cpu", str) || !strcmp("2", str)) {
ftrace_dump_on_oops = DUMP_ORIG;
return 1;
}
......
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