s390: Add ARCH_HAS_PREEMPT_LAZY support

Just add the required TIF bit for ARCH_HAS_PREEMPT_LAZY support.

Shuffle TIF bits to get TIF_NEED_RESCHED_LAZY next to TIF_NEED_RESCHED.

Signed-off-by: Heiko Carstens <[email protected]>

Author: hcahca

arch/s390/Kconfig

@@ -87,6 +87,7 @@ config S390
 	select ARCH_HAS_MEMBARRIER_SYNC_CORE
 	select ARCH_HAS_MEM_ENCRYPT
 	select ARCH_HAS_NMI_SAFE_THIS_CPU_OPS
+	select ARCH_HAS_PREEMPT_LAZY
 	select ARCH_HAS_PTE_SPECIAL
 	select ARCH_HAS_SCALED_CPUTIME
 	select ARCH_HAS_SET_DIRECT_MAP

arch/s390/include/asm/thread_info.h

@@ -64,11 +64,12 @@ void arch_setup_new_exec(void);
 #define TIF_NOTIFY_RESUME	0	/* callback before returning to user */
 #define TIF_SIGPENDING		1	/* signal pending */
 #define TIF_NEED_RESCHED	2	/* rescheduling necessary */
-#define TIF_UPROBE		3	/* breakpointed or single-stepping */
-#define TIF_GUARDED_STORAGE	4	/* load guarded storage control block */
+#define TIF_NEED_RESCHED_LAZY	3	/* lazy rescheduling needed */
+#define TIF_UPROBE		4	/* breakpointed or single-stepping */
 #define TIF_PATCH_PENDING	5	/* pending live patching update */
 #define TIF_PGSTE		6	/* New mm's will use 4K page tables */
 #define TIF_NOTIFY_SIGNAL	7	/* signal notifications exist */
+#define TIF_GUARDED_STORAGE	8	/* load guarded storage control block */
 #define TIF_ISOLATE_BP_GUEST	9	/* Run KVM guests with isolated BP */
 #define TIF_PER_TRAP		10	/* Need to handle PER trap on exit to usermode */
 #define TIF_31BIT		16	/* 32bit process */
@@ -85,11 +86,12 @@ void arch_setup_new_exec(void);
 #define _TIF_NOTIFY_RESUME	BIT(TIF_NOTIFY_RESUME)
 #define _TIF_SIGPENDING		BIT(TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED	BIT(TIF_NEED_RESCHED)
+#define _TIF_NEED_RESCHED_LAZY	BIT(TIF_NEED_RESCHED_LAZY)
 #define _TIF_UPROBE		BIT(TIF_UPROBE)
-#define _TIF_GUARDED_STORAGE	BIT(TIF_GUARDED_STORAGE)
 #define _TIF_PATCH_PENDING	BIT(TIF_PATCH_PENDING)
 #define _TIF_PGSTE		BIT(TIF_PGSTE)
 #define _TIF_NOTIFY_SIGNAL	BIT(TIF_NOTIFY_SIGNAL)
+#define _TIF_GUARDED_STORAGE	BIT(TIF_GUARDED_STORAGE)
 #define _TIF_ISOLATE_BP_GUEST	BIT(TIF_ISOLATE_BP_GUEST)
 #define _TIF_PER_TRAP		BIT(TIF_PER_TRAP)
 #define _TIF_31BIT		BIT(TIF_31BIT)