From 2db7ab6b4c962e2499c86e8fe9cb1369ebaf91d1 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (VMware)" Date: Thu, 17 Jun 2021 16:20:41 -0400 Subject: [PATCH] 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: Steven Rostedt (VMware) --- kernel/trace/trace.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index bbc63ac5b47f..d352fb4b7709 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -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; }