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| author | Thomas Gleixner <tglx@linutronix.de> | 2022-11-23 23:18:31 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2022-11-24 17:09:10 +0300 |
| commit | b0b0aa5d858d4d2fe39a5e4486e0550e858108f6 (patch) | |
| tree | 1bd29b6e97371d48f74417c60cbb21f3d2c82b36 | |
| parent | 2f117484329b233455ee278f2d9b0a4356835060 (diff) | |
| download | linux-b0b0aa5d858d4d2fe39a5e4486e0550e858108f6.tar.xz | |
Documentation: Remove bogus claim about del_timer_sync()
del_timer_sync() does not return the number of times it tried to delete the
timer which rearms itself. It's clearly documented:
The function returns whether it has deactivated a pending timer or not.
This part of the documentation is from 2003 where del_timer_sync() really
returned the number of deletion attempts for unknown reasons. The code
was rewritten in 2005, but the documentation was not updated.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Link: https://lore.kernel.org/r/20221123201624.452282769@linutronix.de
| -rw-r--r-- | Documentation/kernel-hacking/locking.rst | 3 | ||||
| -rw-r--r-- | Documentation/translations/it_IT/kernel-hacking/locking.rst | 4 |
2 files changed, 2 insertions, 5 deletions
diff --git a/Documentation/kernel-hacking/locking.rst b/Documentation/kernel-hacking/locking.rst index 6805ae6e86e6..b26e4a3a9b7e 100644 --- a/Documentation/kernel-hacking/locking.rst +++ b/Documentation/kernel-hacking/locking.rst @@ -1006,8 +1006,7 @@ Another common problem is deleting timers which restart themselves (by calling add_timer() at the end of their timer function). Because this is a fairly common case which is prone to races, you should use del_timer_sync() (``include/linux/timer.h``) to -handle this case. It returns the number of times the timer had to be -deleted before we finally stopped it from adding itself back in. +handle this case. Locking Speed ============= diff --git a/Documentation/translations/it_IT/kernel-hacking/locking.rst b/Documentation/translations/it_IT/kernel-hacking/locking.rst index 51af37f2d621..eddfba806e13 100644 --- a/Documentation/translations/it_IT/kernel-hacking/locking.rst +++ b/Documentation/translations/it_IT/kernel-hacking/locking.rst @@ -1027,9 +1027,7 @@ Un altro problema è l'eliminazione dei temporizzatori che si riavviano da soli (chiamando add_timer() alla fine della loro esecuzione). Dato che questo è un problema abbastanza comune con una propensione alle corse critiche, dovreste usare del_timer_sync() -(``include/linux/timer.h``) per gestire questo caso. Questa ritorna il -numero di volte che il temporizzatore è stato interrotto prima che -fosse in grado di fermarlo senza che si riavviasse. +(``include/linux/timer.h``) per gestire questo caso. Velocità della sincronizzazione =============================== |