Dear RT folks!
I'm pleased to announce the v4.8.6-rt5 patch set.
Changes since v4.8.6-rt5:
- Added `-no-PIE' to the Makefile for AFLAGS as well. This breaks gcc
3.2. Is someone here still using it?
- The NFS fixup was slightly adjusted to avoid disabling preemption on
!RT.
Known issues
- CPU hotplug got a little better but can deadlock.
The delta patch against 4.8.6-rt5 is appended below and can be found here:
https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.8/incr/patch-4.8.6-rt4-rt5.patch.xz
You can get this release via the git tree at:
git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git v4.8.6-rt5
The RT patch against 4.8.6 can be found here:
https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.8/patch-4.8.6-rt5.patch.xz
The split quilt queue is available at:
https://cdn.kernel.org/pub/linux/kernel/projects/rt/4.8/patches-4.8.6-rt5.tar.xz
Sebastian
diff --git a/Makefile b/Makefile
index b1800d3ba0b5..5d699d055995 100644
--- a/Makefile
+++ b/Makefile
@@ -403,7 +403,7 @@ KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
KBUILD_AFLAGS_KERNEL :=
KBUILD_CFLAGS_KERNEL :=
-KBUILD_AFLAGS := -D__ASSEMBLY__
+KBUILD_AFLAGS := -D__ASSEMBLY__ -fno-PIE
KBUILD_AFLAGS_MODULE := -DMODULE
KBUILD_CFLAGS_MODULE := -DMODULE
KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 1f82c370d72b..657e13ed4b5d 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -1459,7 +1459,11 @@ static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs
* recovering after a network partition or a reboot from a
* server that doesn't support a grace period.
*/
+#ifdef CONFIG_PREEMPT_RT_FULL
write_seqlock(&sp->so_reclaim_seqlock);
+#else
+ write_seqcount_begin(&sp->so_reclaim_seqlock.seqcount);
+#endif
spin_lock(&sp->so_lock);
restart:
list_for_each_entry(state, &sp->so_states, open_states) {
@@ -1529,11 +1533,19 @@ static int nfs4_reclaim_open_state(struct nfs4_state_owner *sp, const struct nfs
goto restart;
}
spin_unlock(&sp->so_lock);
+#ifdef CONFIG_PREEMPT_RT_FULL
write_sequnlock(&sp->so_reclaim_seqlock);
+#else
+ write_seqcount_end(&sp->so_reclaim_seqlock.seqcount);
+#endif
return 0;
out_err:
nfs4_put_open_state(state);
+#ifdef CONFIG_PREEMPT_RT_FULL
write_sequnlock(&sp->so_reclaim_seqlock);
+#else
+ write_seqcount_end(&sp->so_reclaim_seqlock.seqcount);
+#endif
return status;
}
diff --git a/localversion-rt b/localversion-rt
index ad3da1bcab7e..0efe7ba1930e 100644
--- a/localversion-rt
+++ b/localversion-rt
@@ -1 +1 @@
--rt4
+-rt5
--
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