Subject: + printk-report-console-names-during-cut-over.patch added to -mm tree
To: keescook@xxxxxxxxxxxx,fweisbec@xxxxxxxxx,gregkh@xxxxxxxxxxxxxxxxxxx,joe@xxxxxxxxxxx,tj@xxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Tue, 24 Sep 2013 16:26:00 -0700
The patch titled
Subject: printk: report console names during cut-over
has been added to the -mm tree. Its filename is
printk-report-console-names-during-cut-over.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/printk-report-console-names-during-cut-over.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/printk-report-console-names-during-cut-over.patch
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------------------------------------------------------
From: Kees Cook <keescook@xxxxxxxxxxxx>
Subject: printk: report console names during cut-over
This reports the names of consoles as they're being disabled to help
identify which is which during cut-over. Helps answer the question "which
boot console actually got activated?" once the regular console is running,
mostly when debugging boot console failures.
Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Joe Perches <joe@xxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/printk/printk.c | 19 +++++++++----------
1 file changed, 9 insertions(+), 10 deletions(-)
diff -puN kernel/printk/printk.c~printk-report-console-names-during-cut-over kernel/printk/printk.c
--- a/kernel/printk/printk.c~printk-report-console-names-during-cut-over
+++ a/kernel/printk/printk.c
@@ -2358,21 +2358,18 @@ void register_console(struct console *ne
* users know there might be something in the kernel's log buffer that
* went to the bootconsole (that they do not see on the real console)
*/
+ printk(KERN_INFO "%sconsole [%s%d] enabled\n",
+ (newcon->flags & CON_BOOT) ? "boot" : "" ,
+ newcon->name, newcon->index);
if (bcon &&
((newcon->flags & (CON_CONSDEV | CON_BOOT)) == CON_CONSDEV) &&
!keep_bootcon) {
- /* we need to iterate through twice, to make sure we print
- * everything out, before we unregister the console(s)
+ /* We need to iterate through all boot consoles, to make
+ * sure we print everything out, before we unregister them.
*/
- printk(KERN_INFO "console [%s%d] enabled, bootconsole disabled\n",
- newcon->name, newcon->index);
for_each_console(bcon)
if (bcon->flags & CON_BOOT)
unregister_console(bcon);
- } else {
- printk(KERN_INFO "%sconsole [%s%d] enabled\n",
- (newcon->flags & CON_BOOT) ? "boot" : "" ,
- newcon->name, newcon->index);
}
}
EXPORT_SYMBOL(register_console);
@@ -2382,6 +2379,10 @@ int unregister_console(struct console *c
struct console *a, *b;
int res;
+ printk(KERN_INFO "%sconsole [%s%d] disabled\n",
+ (console->flags & CON_BOOT) ? "boot" : "" ,
+ console->name, console->index);
+
res = _braille_unregister_console(console);
if (res)
return res;
@@ -2421,8 +2422,6 @@ static int __init printk_late_init(void)
for_each_console(con) {
if (!keep_bootcon && con->flags & CON_BOOT) {
- printk(KERN_INFO "turn off boot console %s%d\n",
- con->name, con->index);
unregister_console(con);
}
}
_
Patches currently in -mm which might be from keescook@xxxxxxxxxxxx are
printk-report-console-names-during-cut-over.patch
kernel-printk-printkc-convert-to-pr_foo.patch
binfmt_elfc-use-get_random_int-to-fix-entropy-depleting.patch
gcov-move-gcov-structs-definitions-to-a-gcc-version-specific-file.patch
gcov-add-support-for-gcc-47-gcov-format.patch
gcov-compile-specific-gcov-implementation-based-on-gcc-version.patch
kernel-add-support-for-init_array-constructors.patch
kernel-add-support-for-init_array-constructors-fix.patch
kernel-gcov-fsc-use-pr_warn.patch
linux-next.patch
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