kexec: quiet down kexec reboot
authorPavel Tatashin <pasha.tatashin@soleen.com>
Wed, 4 Dec 2019 15:59:14 +0000 (10:59 -0500)
committerWill Deacon <will@kernel.org>
Wed, 8 Jan 2020 16:32:55 +0000 (16:32 +0000)
Here is a regular kexec command sequence and output:
=====
$ kexec --reuse-cmdline -i --load Image
$ kexec -e
[  161.342002] kexec_core: Starting new kernel

Welcome to Buildroot
buildroot login:
=====

Even when "quiet" kernel parameter is specified, "kexec_core: Starting
new kernel" is printed.

This message has  KERN_EMERG level, but there is no emergency, it is a
normal kexec operation, so quiet it down to appropriate KERN_NOTICE.

Machines that have slow console baud rate benefit from less output.

Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Simon Horman <horms@verge.net.au>
Acked-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Will Deacon <will@kernel.org>
kernel/kexec_core.c

index 15d70a9..f7ae04b 100644 (file)
@@ -1171,7 +1171,7 @@ int kernel_kexec(void)
                 * CPU hotplug again; so re-enable it here.
                 */
                cpu_hotplug_enable();
-               pr_emerg("Starting new kernel\n");
+               pr_notice("Starting new kernel\n");
                machine_shutdown();
        }