[PATCH v3 0/2] fbdev/core: Disable console-lock warnings when fb.lockless_register_fb is set

[Thomas Zimmermann]

Hi,

this is version 3 of the WARN_CONSOLE_UNLOCKED patch set. The
macro prints a warning if the console's critical sections are
entered without holding the console lock. This patch set allows
to disable the warnings while debugging the console.

In the original approach, WARN_CONSOLE_UNLOCKED was disabled by
setting ignore_console_lock_warning of type bool. As suggested by
Petr Mladek, the new implementation is based on atomic_t and allows
multiple threads to manipulate the warning state concurrently.

With version 3, the patch set now includes the patch for introducing
ignore_console_lock_warning. This patch superseds all previous patches
of the same purpose.

Best regards
Thomas

v3:
	- implement ignore_console_lock_warning with atomic_t
v2:
	- restore ignore_console_lock_warning if lock_fb_info() fails

Thomas Zimmermann (2):
  console: Replace #if 0 with atomic var 'ignore_console_lock_warning'
  fbdev/core: Disable console-lock warnings when fb.lockless_register_fb
    is set

 drivers/video/fbdev/core/fbmem.c | 13 +++++++++----
 include/linux/console.h          | 14 +++++++++-----
 kernel/printk/printk.c           |  3 +++
 3 files changed, 21 insertions(+), 9 deletions(-)

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2.18.0