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linux(4): Factor out the FUTEX_WAKE op into linux_futex_wake().

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MFC after:		2 weeks
This commit is contained in:
Dmitry Chagin 2021-07-20 14:38:05 +03:00
parent f6b0d275eb
commit 19f7e2c2fb
1 changed files with 22 additions and 12 deletions
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34
sys/compat/linux/linux_futex.c
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@ -239,6 +239,7 @@ struct linux_futex_args {
static int linux_futex(struct thread *, struct linux_futex_args *);
static int linux_futex_wait(struct thread *, struct linux_futex_args *);
static int linux_futex_wake(struct thread *, struct linux_futex_args *);
static void
futex_put(struct futex *f, struct waiting_proc *wp)
@ -697,18 +698,7 @@ linux_futex(struct thread *td, struct linux_futex_args *args)
LINUX_CTR3(sys_futex, "WAKE uaddr %p nrwake 0x%x bitset 0x%x",
args->uaddr, args->val, args->val3);
error = futex_get(args->uaddr, NULL, &f,
args->flags | FUTEX_DONTCREATE);
if (error)
return (error);
if (f == NULL) {
td->td_retval[0] = 0;
return (error);
}
td->td_retval[0] = futex_wake(f, args->val, args->val3);
futex_put(f, NULL);
break;
return (linux_futex_wake(td, args));
case LINUX_FUTEX_CMP_REQUEUE:
LIN_SDT_PROBE5(futex, linux_futex, debug_cmp_requeue,
@ -933,6 +923,26 @@ retry2:
return (error);
}
static int
linux_futex_wake(struct thread *td, struct linux_futex_args *args)
{
struct futex *f;
int error;
f = NULL;
error = futex_get(args->uaddr, NULL, &f, args->flags | FUTEX_DONTCREATE);
if (error != 0)
return (error);
if (f == NULL) {
td->td_retval[0] = 0;
return (error);
}
td->td_retval[0] = futex_wake(f, args->val, args->val3);
futex_put(f, NULL);
return (0);
}
static int
linux_futex_wait(struct thread *td, struct linux_futex_args *args)
{