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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2022-07-16 10:46:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-07-16 10:46:03 -0700 |
| commit | be9b7b6acfeae47778f829d9d176ab1f9269593e (patch) | |
| tree | 1d4f5754b9f4ee0fe567fe39d6d62f98bee017cd /kernel | |
| parent | random: cap jitter samples per bit to factor of HZ (diff) | |
| parent | Merge branch 'rework/kthreads' into for-linus (diff) | |
| download | wireguard-linux-be9b7b6acfeae47778f829d9d176ab1f9269593e.tar.xz wireguard-linux-be9b7b6acfeae47778f829d9d176ab1f9269593e.zip | |
Merge tag 'printk-for-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk fix from Petr Mladek:
- Make pr_flush() fast when consoles are suspended.
* tag 'printk-for-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
printk: do not wait for consoles when suspended
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/printk/printk.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index b49c6ff6dca0..a1a81fd9889b 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -3380,6 +3380,7 @@ static bool __pr_flush(struct console *con, int timeout_ms, bool reset_on_progre diff = 0; console_lock(); + for_each_console(c) { if (con && con != c) continue; @@ -3389,11 +3390,19 @@ static bool __pr_flush(struct console *con, int timeout_ms, bool reset_on_progre if (printk_seq < seq) diff += seq - printk_seq; } - console_unlock(); - if (diff != last_diff && reset_on_progress) + /* + * If consoles are suspended, it cannot be expected that they + * make forward progress, so timeout immediately. @diff is + * still used to return a valid flush status. + */ + if (console_suspended) + remaining = 0; + else if (diff != last_diff && reset_on_progress) remaining = timeout_ms; + console_unlock(); + if (diff == 0 || remaining == 0) break; |