diff options
| author | John Ogness <john.ogness@linutronix.de> | 2022-04-21 23:28:46 +0206 |
|---|---|---|
| committer | Petr Mladek <pmladek@suse.com> | 2022-04-22 21:30:58 +0200 |
| commit | 3b604ca81202eea2a917eb6491e90f610fba0ec7 (patch) | |
| tree | 553f119d8bed892bed778c99e11faaaadf119cd6 /include/linux/printk.h | |
| parent | 03a749e628fdbc665d7f9712637f880a79da8b78 (diff) | |
printk: add pr_flush()
Provide a might-sleep function to allow waiting for console printers
to catch up to the latest logged message.
Use pr_flush() whenever it is desirable to get buffered messages
printed before continuing: suspend_console(), resume_console(),
console_stop(), console_start(), console_unblank().
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20220421212250.565456-12-john.ogness@linutronix.de
Diffstat (limited to 'include/linux/printk.h')
| -rw-r--r-- | include/linux/printk.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/printk.h b/include/linux/printk.h index b70a42f94031..091fba7283e1 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -170,6 +170,8 @@ extern void __printk_safe_exit(void); #define printk_deferred_enter __printk_safe_enter #define printk_deferred_exit __printk_safe_exit +extern bool pr_flush(int timeout_ms, bool reset_on_progress); + /* * Please don't use printk_ratelimit(), because it shares ratelimiting state * with all other unrelated printk_ratelimit() callsites. Instead use @@ -220,6 +222,11 @@ static inline void printk_deferred_exit(void) { } +static inline bool pr_flush(int timeout_ms, bool reset_on_progress) +{ + return true; +} + static inline int printk_ratelimit(void) { return 0; |