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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-11-03 08:22:21 -1000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-11-03 08:22:21 -1000 |
| commit | b019b4a6706f3ee133d68a29ae92cc6695e86d6e (patch) | |
| tree | 43e9f89da1db2fd00bfe96de42cb1cf4a3dc3261 /kernel | |
| parent | 33e83ffe4c57132c73b7d3fb7919006c5296c496 (diff) | |
| parent | b5413156bad91dc2995a5c4eab1b05e56914638a (diff) | |
Merge tag 'timers-urgent-2024-11-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
"A single fix for posix CPU timers.
When a thread is cloned, the posix CPU timers are not inherited.
If the parent has a CPU timer armed the corresponding tick dependency
in the tasks tick_dep_mask is set and copied to the new thread, which
means the new thread and all decendants will prevent the system to go
into full NOHZ operation.
Clear the tick dependency mask in copy_process() to fix this"
* tag 'timers-urgent-2024-11-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
posix-cpu-timers: Clear TICK_DEP_BIT_POSIX_TIMER on clone
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/fork.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c index 3bf38d260cb3..22f43721d031 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -105,6 +105,7 @@ #include <linux/rseq.h> #include <uapi/linux/pidfd.h> #include <linux/pidfs.h> +#include <linux/tick.h> #include <asm/pgalloc.h> #include <linux/uaccess.h> @@ -2292,6 +2293,7 @@ __latent_entropy struct task_struct *copy_process( acct_clear_integrals(p); posix_cputimers_init(&p->posix_cputimers); + tick_dep_init_task(p); p->io_context = NULL; audit_set_context(p, NULL); |