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Linux 5.17 compat: dequeue_signal() takes a 4th argument

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Linux 5.17's dequeue_signal() takes an additional enum pid_type *
output argument

Upstream commit 5768d8906bc23d512b1a736c1e198aa833a6daa4
("signal: Requeue signals in the appropriate queue")

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes #12989
This commit is contained in:
наб 2022-01-19 21:33:50 +01:00 committed by Brian Behlendorf
parent a9856574cf
commit a46237106c
2 changed files with 48 additions and 2 deletions
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45
config/kernel-kthread.m4
View File

@ -1,4 +1,4 @@
AC_DEFUN([ZFS_AC_KERNEL_KTHREAD], [
AC_DEFUN([ZFS_AC_KERNEL_KTHREAD_COMPLETE_AND_EXIT], [
dnl #
dnl # 5.17 API,
dnl # cead18552660702a4a46f58e65188fe5f36e9dfe ("exit: Rename complete_and_exit to kthread_complete_and_exit")
@ -15,7 +15,24 @@ AC_DEFUN([ZFS_AC_KERNEL_KTHREAD], [
])
])
AC_DEFUN([ZFS_AC_KERNEL_SRC_KTHREAD], [
AC_DEFUN([ZFS_AC_KERNEL_KTHREAD_DEQUEUE_SIGNAL_4ARG], [
dnl #
dnl # 5.17 API: enum pid_type * as new 4th dequeue_signal() argument,
dnl # 5768d8906bc23d512b1a736c1e198aa833a6daa4 ("signal: Requeue signals in the appropriate queue")
dnl #
dnl # int dequeue_signal(struct task_struct *task, sigset_t *mask, kernel_siginfo_t *info);
dnl # int dequeue_signal(struct task_struct *task, sigset_t *mask, kernel_siginfo_t *info, enum pid_type *type);
dnl #
AC_MSG_CHECKING([whether dequeue_signal() takes 4 arguments])
ZFS_LINUX_TEST_RESULT([kthread_dequeue_signal], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_DEQUEUE_SIGNAL_4ARG, 1, [dequeue_signal() takes 4 arguments])
], [
AC_MSG_RESULT(no)
])
])
AC_DEFUN([ZFS_AC_KERNEL_SRC_KTHREAD_COMPLETE_AND_EXIT], [
ZFS_LINUX_TEST_SRC([kthread_complete_and_exit], [
#include <linux/kthread.h>
], [
@ -25,3 +42,27 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_KTHREAD], [
kthread_complete_and_exit(completion, code);
])
])
AC_DEFUN([ZFS_AC_KERNEL_SRC_KTHREAD_DEQUEUE_SIGNAL_4ARG], [
ZFS_LINUX_TEST_SRC([kthread_dequeue_signal], [
#include <linux/sched/signal.h>
], [
struct task_struct *task = NULL;
sigset_t *mask = NULL;
kernel_siginfo_t *info = NULL;
enum pid_type *type = NULL;
int error __attribute__ ((unused));
error = dequeue_signal(task, mask, info, type);
])
])
AC_DEFUN([ZFS_AC_KERNEL_KTHREAD], [
ZFS_AC_KERNEL_KTHREAD_COMPLETE_AND_EXIT
ZFS_AC_KERNEL_KTHREAD_DEQUEUE_SIGNAL_4ARG
])
AC_DEFUN([ZFS_AC_KERNEL_SRC_KTHREAD], [
ZFS_AC_KERNEL_SRC_KTHREAD_COMPLETE_AND_EXIT
ZFS_AC_KERNEL_SRC_KTHREAD_DEQUEUE_SIGNAL_4ARG
])

5
module/os/linux/spl/spl-thread.c
View File

@ -188,7 +188,12 @@ issig(int why)
spin_lock_irq(&task->sighand->siglock);
int ret;
#ifdef HAVE_DEQUEUE_SIGNAL_4ARG
enum pid_type __type;
if ((ret = dequeue_signal(task, &set, &__info, &__type)) != 0) {
#else
if ((ret = dequeue_signal(task, &set, &__info)) != 0) {
#endif
#ifdef HAVE_SIGNAL_STOP
spin_unlock_irq(&task->sighand->siglock);
kernel_signal_stop();