x86: Wire up TIF_NOTIFY_SIGNAL

The generic entry code has support for TIF_NOTIFY_SIGNAL already. Just
provide the TIF bit.

[ tglx: Adopted to other TIF changes in x86 ]

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201026203230.386348-4-axboe@kernel.dk

diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
index a12b964..06a1710 100644 (file)
--- a/arch/x86/include/asm/thread_info.h
+++ b/arch/x86/include/asm/thread_info.h
@@ -91,6 +91,7 @@ struct thread_info {
 #define TIF_NEED_FPU_LOAD      14      /* load FPU on return to userspace */
 #define TIF_NOCPUID            15      /* CPUID is not accessible in userland */
 #define TIF_NOTSC              16      /* TSC is not accessible in userland */
+#define TIF_NOTIFY_SIGNAL      17      /* signal notifications exist */
 #define TIF_SLD                        18      /* Restore split lock detection on context switch */
 #define TIF_MEMDIE             20      /* is terminating due to OOM killer */
 #define TIF_POLLING_NRFLAG     21      /* idle is polling for TIF_NEED_RESCHED */
@@ -118,6 +119,7 @@ struct thread_info {
 #define _TIF_NEED_FPU_LOAD     (1 << TIF_NEED_FPU_LOAD)
 #define _TIF_NOCPUID           (1 << TIF_NOCPUID)
 #define _TIF_NOTSC             (1 << TIF_NOTSC)
+#define _TIF_NOTIFY_SIGNAL     (1 << TIF_NOTIFY_SIGNAL)
 #define _TIF_SLD               (1 << TIF_SLD)
 #define _TIF_POLLING_NRFLAG    (1 << TIF_POLLING_NRFLAG)
 #define _TIF_IO_BITMAP         (1 << TIF_IO_BITMAP)