The patch titled
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
has been added to the -mm tree. Its filename is
xen-paravirt_ops-some-generic-early-printk-boot-console-fixups.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
From: Gerd Hoffmann <kraxel@xxxxxxx>
Some generic early printk & boot console fixups
(already sent to lkml).
Signed-off-by: Jeremy Fitzhardinge <jeremy@xxxxxxxxxxxxx>
---
===================================================================
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86_64/kernel/early_printk.c | 20 +++++---------------
drivers/char/tty_io.c | 5 -----
kernel/printk.c | 26 ++++++++++++++++----------
3 files changed, 21 insertions(+), 30 deletions(-)
diff -puN arch/x86_64/kernel/early_printk.c~xen-paravirt_ops-some-generic-early-printk-boot-console-fixups arch/x86_64/kernel/early_printk.c
--- a/arch/x86_64/kernel/early_printk.c~xen-paravirt_ops-some-generic-early-printk-boot-console-fixups
+++ a/arch/x86_64/kernel/early_printk.c
@@ -244,22 +244,12 @@ static int __init setup_early_printk(cha
early_console = &simnow_console;
keep_early = 1;
}
+
+ if (keep_early)
+ early_console->flags &= ~CON_BOOT;
+ else
+ early_console->flags |= CON_BOOT;
register_console(early_console);
return 0;
}
-
early_param("earlyprintk", setup_early_printk);
-
-void __init disable_early_printk(void)
-{
- if (!early_console_initialized || !early_console)
- return;
- if (!keep_early) {
- printk("disabling early console\n");
- unregister_console(early_console);
- early_console_initialized = 0;
- } else {
- printk("keeping early console\n");
- }
-}
-
diff -puN drivers/char/tty_io.c~xen-paravirt_ops-some-generic-early-printk-boot-console-fixups drivers/char/tty_io.c
--- a/drivers/char/tty_io.c~xen-paravirt_ops-some-generic-early-printk-boot-console-fixups
+++ a/drivers/char/tty_io.c
@@ -141,8 +141,6 @@ static DECLARE_MUTEX(allocated_ptys_lock
static int ptmx_open(struct inode *, struct file *);
#endif
-extern void disable_early_printk(void);
-
static void initialize_tty_struct(struct tty_struct *tty);
static ssize_t tty_read(struct file *, char __user *, size_t, loff_t *);
@@ -3879,9 +3877,6 @@ void __init console_init(void)
* set up the console device so that later boot sequences can
* inform about problems etc..
*/
-#ifdef CONFIG_EARLY_PRINTK
- disable_early_printk();
-#endif
call = __con_initcall_start;
while (call < __con_initcall_end) {
(*call)();
diff -puN kernel/printk.c~xen-paravirt_ops-some-generic-early-printk-boot-console-fixups kernel/printk.c
--- a/kernel/printk.c~xen-paravirt_ops-some-generic-early-printk-boot-console-fixups
+++ a/kernel/printk.c
@@ -931,8 +931,16 @@ void register_console(struct console *co
{
int i;
unsigned long flags;
+ struct console *bootconsole = NULL;
- if (preferred_console < 0)
+ if (console_drivers) {
+ if (console->flags & CON_BOOT)
+ return;
+ if (console_drivers->flags & CON_BOOT)
+ bootconsole = console_drivers;
+ }
+
+ if (preferred_console < 0 || bootconsole || !console_drivers)
preferred_console = selected_console;
/*
@@ -978,8 +986,11 @@ void register_console(struct console *co
if (!(console->flags & CON_ENABLED))
return;
- if (console_drivers && (console_drivers->flags & CON_BOOT)) {
- unregister_console(console_drivers);
+ if (bootconsole) {
+ printk(KERN_INFO "console handover: boot [%s%d] -> real [%s%d]\n",
+ bootconsole->name, bootconsole->index,
+ console->name, console->index);
+ unregister_console(bootconsole);
console->flags &= ~CON_PRINTBUFFER;
}
@@ -1030,16 +1041,11 @@ int unregister_console(struct console *c
}
}
- /* If last console is removed, we re-enable picking the first
- * one that gets registered. Without that, pmac early boot console
- * would prevent fbcon from taking over.
- *
+ /*
* If this isn't the last console and it has CON_CONSDEV set, we
* need to set it on the next preferred console.
*/
- if (console_drivers == NULL)
- preferred_console = selected_console;
- else if (console->flags & CON_CONSDEV)
+ if (console_drivers != NULL && console->flags & CON_CONSDEV)
console_drivers->flags |= CON_CONSDEV;
release_console_sem();
_
Patches currently in -mm which might be from jeremy@xxxxxxxx are
xen-paravirt_ops-no-need-to-use-traditional-for-processing-asm-in-arch-i386.patch
xen-paravirt_ops-clean-up-elf-note-generation.patch
xen-paravirt_ops-fix-typo-in-sync_constant_test_bits-name.patch
xen-paravirt_ops-ignore-vgacon-if-hardware-not-present.patch
xen-paravirt_ops-add-pagetable-accessors-to-pack-and-unpack-pagetable-entries.patch
xen-paravirt_ops-paravirt_ops-hooks-to-set-up-initial-pagetable.patch
xen-paravirt_ops-paravirt_ops-allocate-a-fixmap-slot.patch
xen-paravirt_ops-allow-paravirt-backend-to-choose-kernel-pmd-sharing.patch
xen-paravirt_ops-add-hooks-to-intercept-mm-creation-and-destruction.patch
xen-paravirt_ops-remove-have_arch_mm_lifetime-define-no-op-architecture-implementations.patch
xen-paravirt_ops-add-apply_to_page_range-which-applies-a-function-to-a-pte-range.patch
xen-paravirt_ops-allocate-and-free-vmalloc-areas.patch
xen-paravirt_ops-add-nosegneg-capability-to-the-vsyscall-page-notes.patch
xen-paravirt_ops-add-xen-config-options.patch
xen-paravirt_ops-add-xen-interface-header-files.patch
xen-paravirt_ops-core-xen-implementation.patch
xen-paravirt_ops-some-generic-early-printk-boot-console-fixups.patch
xen-paravirt_ops-use-the-hvc-console-infrastructure-for-xen-console.patch
xen-paravirt_ops-add-early-printk-support-via-hvc-console.patch
xen-paravirt_ops-add-xen-grant-table-support.patch
xen-paravirt_ops-add-the-xenbus-sysfs-and-virtual-device-hotplug-driver.patch
xen-paravirt_ops-add-xen-virtual-block-device-driver.patch
xen-paravirt_ops-add-the-xen-virtual-network-device-driver.patch
fixes-and-cleanups-for-earlyprintk-aka-boot-console.patch
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