diff options
Diffstat (limited to '')
| -rw-r--r-- | debian/patches-rt/0058-printk-Add-force_early_printk-boot-param-to-help-wit.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/debian/patches-rt/0058-printk-Add-force_early_printk-boot-param-to-help-wit.patch b/debian/patches-rt/0058-printk-Add-force_early_printk-boot-param-to-help-wit.patch new file mode 100644 index 000000000..68fc30c35 --- /dev/null +++ b/debian/patches-rt/0058-printk-Add-force_early_printk-boot-param-to-help-wit.patch @@ -0,0 +1,39 @@ +From fa9f6eea1ebbb987a57d889ad00f142a21aa1843 Mon Sep 17 00:00:00 2001 +From: Peter Zijlstra <peterz@infradead.org> +Date: Fri, 2 Sep 2011 14:41:29 +0200 +Subject: [PATCH 058/347] printk: Add "force_early_printk" boot param to help + with debugging +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz + +Gives me an option to screw printk and actually see what the machine +says. + +Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> +Link: http://lkml.kernel.org/r/1314967289.1301.11.camel@twins +Signed-off-by: Thomas Gleixner <tglx@linutronix.de> +Link: http://lkml.kernel.org/n/tip-ykb97nsfmobq44xketrxs977@git.kernel.org +--- + kernel/printk/printk.c | 7 +++++++ + 1 file changed, 7 insertions(+) + +diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c +index 963c20ab9548..7b774743e1ac 100644 +--- a/kernel/printk/printk.c ++++ b/kernel/printk/printk.c +@@ -437,6 +437,13 @@ asmlinkage void early_printk(const char *fmt, ...) + */ + static bool __read_mostly printk_killswitch; + ++static int __init force_early_printk_setup(char *str) ++{ ++ printk_killswitch = true; ++ return 0; ++} ++early_param("force_early_printk", force_early_printk_setup); ++ + void printk_kill(void) + { + printk_killswitch = true; +-- +2.36.1 + |