Disable epoll_pwait2() in sd-event

0001-sd-event-do-not-use-epoll_pwait2-tentatively.patch

@@ -0,0 +1,35 @@
+From 829e2b5cd552c5ea33a8ccc43e118ba87bbda206 Mon Sep 17 00:00:00 2001
+From: Yu Watanabe <watanabe.yu+github@gmail.com>
+Date: Fri, 19 Mar 2021 04:13:59 +0900
+Subject: [PATCH] sd-event: do not use epoll_pwait2() tentatively
+
+---
+ src/libsystemd/sd-event/sd-event.c | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/src/libsystemd/sd-event/sd-event.c b/src/libsystemd/sd-event/sd-event.c
+index 8f74b14101..14bed4f854 100644
+--- a/src/libsystemd/sd-event/sd-event.c
++++ b/src/libsystemd/sd-event/sd-event.c
+@@ -3808,8 +3808,9 @@ static int epoll_wait_usec(
+                 int maxevents,
+                 usec_t timeout) {
+ 
+-        static bool epoll_pwait2_absent = false;
+         int r, msec;
++#if 0
++        static bool epoll_pwait2_absent = false;
+ 
+         /* A wrapper that uses epoll_pwait2() if available, and falls back to epoll_wait() if not */
+ 
+@@ -3829,6 +3830,7 @@ static int epoll_wait_usec(
+ 
+                 epoll_pwait2_absent = true;
+         }
++#endif
+ 
+         if (timeout == USEC_INFINITY)
+                 msec = -1;
+-- 
+2.30.2
+

2ad2a50a832140edfb49a95384e35bcf7a034acf.patch

@@ -1,36 +0,0 @@
-From 2ad2a50a832140edfb49a95384e35bcf7a034acf Mon Sep 17 00:00:00 2001
-From: Lennart Poettering <lennart@poettering.net>
-Date: Thu, 11 Mar 2021 21:49:44 +0100
-Subject: [PATCH] syscall: disable epoll_pwait2() for now on 32bit
-
-Alternative to #18973.
----
- src/basic/missing_syscall.h | 8 ++++++++
- 1 file changed, 8 insertions(+)
-
-diff --git a/src/basic/missing_syscall.h b/src/basic/missing_syscall.h
-index 13843248045..8bbe4d28847 100644
---- a/src/basic/missing_syscall.h
-+++ b/src/basic/missing_syscall.h
-@@ -407,6 +407,13 @@ static inline int missing_epoll_pwait2(
-                 const sigset_t *sigset) {
- 
- #  if defined(__NR_epoll_pwait2) && HAVE_LINUX_TIME_TYPES_H
-+#    if __SIZEOF_LONG__ == 4
-+        /* Someone with an interest in 32bit systems, please have a look at this, and figure out why
-+         * this hangs on 32bit systems. My educated guess: might be because of issues with the
-+         * __kernel_timespec translation or because of incorrectly sized sigset_t array. */
-+        errno = ENOSYS;
-+        return -1;
-+#    else
-         if (timeout) {
-                 /* Convert from userspace timespec to kernel timespec */
-                 struct __kernel_timespec ts = {
-@@ -417,6 +424,7 @@ static inline int missing_epoll_pwait2(
-                 return syscall(__NR_epoll_pwait2, fd, events, maxevents, &ts, sigset, sigset ? KERNEL_NSIG_BYTES : 0);
-         } else
-                 return syscall(__NR_epoll_pwait2, fd, events, maxevents, NULL, sigset, sigset ? KERNEL_NSIG_BYTES : 0);
-+#    endif
- #  else
-         errno = ENOSYS;
-         return -1;

systemd.spec

@@ -71,8 +71,6 @@ GIT_DIR=../../src/systemd/.git git diffab -M v233..master@{2017-06-15} -- hwdb/[
 %endif
 
 # Backports of patches from upstream (0000–0499)
-# https://github.com/systemd/systemd/pull/19042
-Patch0502:      https://github.com/systemd/systemd/pull/19042/commits/2ad2a50a832140edfb49a95384e35bcf7a034acf.patch
 
 # Downstream-only patches (5000–9999)
 # https://bugzilla.redhat.com/show_bug.cgi?id=1738828
@@ -81,6 +79,9 @@ Patch0500:      use-bfq-scheduler.patch
 # https://github.com/systemd/systemd/pull/17050
 Patch0501:      https://github.com/systemd/systemd/pull/17050/commits/f58b96d3e8d1cb0dd3666bc74fa673918b586612.patch
 
+# https://github.com/systemd/systemd/pull/18973
+Patch0502:      0001-sd-event-do-not-use-epoll_pwait2-tentatively.patch
+
 %ifarch %{ix86} x86_64 aarch64
 %global have_gnu_efi 1
 %endif