postgresql: fix for atomic operations in aarch64

.. is needed also in the older version.

Version: 9.2.4-3
Resolves: #970661

postgresql-9.2.4-aarch64-atomic.patch

@@ -1,21 +1,37 @@
-From: Tom Lane <tgl@sss.pgh.pa.us>
-Date: Tue, 4 Jun 2013 19:42:02 +0000 (-0400)
-Subject: Add ARM64 (aarch64) support to s_lock.h.
-X-Git-Url: http://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff_plain;h=612ecf311bf253cdb0c54252854c5298aa668203
-
-Add ARM64 (aarch64) support to s_lock.h.
-
-Use the same gcc atomic functions as we do on newer ARM chips.
-(Basically this is a copy and paste of the __arm__ code block,
-but omitting the SWPB option since that definitely won't work.)
-
-Back-patch to 9.2.  The patch would work further back, but we'd also
-need to update config.guess/config.sub in older branches to make them
-build out-of-the-box, and there hasn't been demand for it.
-
-Mark Salter
----
-
+diff --git a/postgresql-9.1.9/src/include/storage/s_lock.h b/postgresql-9.1.9/src/include/storage/s_lock.h
+index 987fb9c..1ba718c 100644
+--- a/postgresql-9.1.9/src/include/storage/s_lock.h
++++ b/postgresql-9.1.9/src/include/storage/s_lock.h
+@@ -296,6 +296,29 @@ tas(volatile slock_t *lock)
+ #endif	 /* __arm__ */
+ 
+ 
++/*
++ * On ARM64, we use __sync_lock_test_and_set(int *, int) if available.
++ */
++#if defined(__aarch64__) || defined(__aarch64)
++#ifdef HAVE_GCC_INT_ATOMICS
++#define HAS_TEST_AND_SET
++
++#define TAS(lock) tas(lock)
++
++typedef int slock_t;
++
++static __inline__ int
++tas(volatile slock_t *lock)
++{
++	return __sync_lock_test_and_set(lock, 1);
++}
++
++#define S_UNLOCK(lock) __sync_lock_release(lock)
++
++#endif	 /* HAVE_GCC_INT_ATOMICS */
++#endif	 /* __aarch64__ */
++
++
+ /* S/390 and S/390x Linux (32- and 64-bit zSeries) */
+ #if defined(__s390__) || defined(__s390x__)
+ #define HAS_TEST_AND_SET
 diff --git a/src/include/storage/s_lock.h b/src/include/storage/s_lock.h
 index d4a783f..29124b1 100644
 --- a/src/include/storage/s_lock.h

postgresql.spec

@@ -337,7 +337,6 @@ benchmarks.
 %patch4 -p1
 %patch5 -p1
 %patch6 -p1
-%patch7 -p1 -b .atomic-aarch64
 
 # We used to run autoconf here, but there's no longer any real need to,
 # since Postgres ships with a reasonably modern configure script.
@@ -357,6 +356,9 @@ cp -p config/config.guess postgresql-%{prevversion}/config/config.guess
 cp -p config/config.sub postgresql-%{prevversion}/config/config.sub
 %endif
 
+# the %%{SOURCE3} must be unpacked before this patch is applied
+%patch7 -p1 -b .atomic-aarch64
+
 # remove .gitignore files to ensure none get into the RPMs (bug #642210)
 find . -type f -name .gitignore | xargs rm
 
@@ -1106,6 +1108,9 @@ fi
 %endif
 
 %changelog
+* Thu Jun 13 2013 Pavel Raiskup <praiskup@redhat.com> - 9.2.4-2
+- add atomic operations support for aarch64 to preupgrade version also (#970661)
+
 * Thu Jun 13 2013 Jan Stanek <jstanek@redhat.com> - 9.2.4-3
 - added patch for manual pages (#948933)