[PATCH v2 0/2] printk: Reduce unnecessary wait times by pr_flush()

[Petr Mladek]

This is an updated version of the patch
https://lore.kernel.org/r/20230929113233.863824-1-john.ogness@xxxxxxxxxxxxx

Changes since v1:

  + Split reduction of the pooling time into separate patch.
  + Use jiffies to count the real sleeping time.

Note that my original POC counted jiffies spent in the entire cycle.
It would count also the time spent by console_lock() and by flushing
the legacy consoles in console_unlock().

The current version counts only the time spent by msleep(1) aka
the pooling interval.


John Ogness (1):
  printk: flush consoles before checking progress

Petr Mladek (1):
  printk: Reduce pr_flush() pooling time

 kernel/printk/printk.c | 34 ++++++++++++++++++++--------------
 1 file changed, 20 insertions(+), 14 deletions(-)

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2.35.3