jump_label: Clarify condition in static_key_fast_inc_not_disabled()

Browse source

The second part of

      if (v <= 0 || (v + 1) < 0)

is not immediately obvious that it acts as overflow protection.

Check explicitely for v == INT_MAX instead and add a proper comment how
this is used at the call sites.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20240610124406.484973160@linutronix.de

...

This commit is contained in:

Thomas Gleixner 2024-06-10 14:46:37 +02:00 • committed by Peter Zijlstra

parent 83ab38ef0a

commit 695ef79646

1 changed files with 6 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

9

kernel/jump_label.c

View file