diff options
| author | Mark Brown <broonie@kernel.org> | 2018-08-28 19:03:57 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-08-28 19:03:57 +0100 |
| commit | 6e2d6b2728fcb408eabd7991804f8cb33ff59f20 (patch) | |
| tree | 18dc3fc5bd55fa9ff92430e4ab8353de6c5c0e55 /include/linux/console.h | |
| parent | 6f0a256253f48095ba2e5bcdfbed41f21643c105 (diff) | |
| parent | 5b394b2ddf0347bef56e50c69a58773c94343ff3 (diff) | |
Merge tag 'v4.19-rc1' into asoc-4.19
Linux 4.19-rc1
Diffstat (limited to 'include/linux/console.h')
| -rw-r--r-- | include/linux/console.h | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/include/linux/console.h b/include/linux/console.h index dfd6b0e97855..ec9bdb3d7bab 100644 --- a/include/linux/console.h +++ b/include/linux/console.h @@ -14,6 +14,7 @@ #ifndef _LINUX_CONSOLE_H_ #define _LINUX_CONSOLE_H_ 1 +#include <linux/atomic.h> #include <linux/types.h> struct vc_data; @@ -21,6 +22,7 @@ struct console_font_op; struct console_font; struct module; struct tty_struct; +struct notifier_block; /* * this is what the terminal answers to a ESC-Z or csi0c query. @@ -200,11 +202,14 @@ void vcs_make_sysfs(int index); void vcs_remove_sysfs(int index); /* Some debug stub to catch some of the obvious races in the VT code */ -#if 1 -#define WARN_CONSOLE_UNLOCKED() WARN_ON(!is_console_locked() && !oops_in_progress) -#else -#define WARN_CONSOLE_UNLOCKED() -#endif +#define WARN_CONSOLE_UNLOCKED() \ + WARN_ON(!atomic_read(&ignore_console_lock_warning) && \ + !is_console_locked() && !oops_in_progress) +/* + * Increment ignore_console_lock_warning if you need to quiet + * WARN_CONSOLE_UNLOCKED() for debugging purposes. + */ +extern atomic_t ignore_console_lock_warning; /* VESA Blanking Levels */ #define VESA_NO_BLANKING 0 @@ -220,4 +225,8 @@ static inline bool vgacon_text_force(void) { return false; } extern void console_init(void); +/* For deferred console takeover */ +void dummycon_register_output_notifier(struct notifier_block *nb); +void dummycon_unregister_output_notifier(struct notifier_block *nb); + #endif /* _LINUX_CONSOLE_H */ |