diff options
| author | John Ogness <john.ogness@linutronix.de> | 2022-07-15 08:16:42 +0206 |
|---|---|---|
| committer | Petr Mladek <pmladek@suse.com> | 2022-07-15 10:52:11 +0200 |
| commit | 9023ca0866250d268b047f21e1392e7a81277a54 (patch) | |
| tree | ce45ae54cb0696dc167787b35ba4df28e6017458 /tools/time | |
| parent | 07a22b61946f0b80065b0ddcc703b715f84355f5 (diff) | |
printk: do not wait for consoles when suspended
The console_stop() and console_start() functions call pr_flush().
When suspending, these functions are called by the serial subsystem
while the serial port is suspended. In this scenario, if there are
any pending messages, a call to pr_flush() will always result in a
timeout because the serial port cannot make forward progress. This
causes longer suspend and resume times.
Add a check in pr_flush() so that it will immediately timeout if
the consoles are suspended.
Fixes: 3b604ca81202 ("printk: add pr_flush()")
Reported-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Tested-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20220715061042.373640-2-john.ogness@linutronix.de
Diffstat (limited to 'tools/time')
0 files changed, 0 insertions, 0 deletions