um: remove useless headers
apic.h, desc.h and irq_vectors.h - never included on uml builds.
arch_hweight.h and barrier.h - might as well use the host one.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/x86/um/asm/apic.h b/arch/x86/um/asm/apic.h
deleted file mode 100644
index 876dee8..0000000
--- a/arch/x86/um/asm/apic.h
+++ /dev/null
@@ -1,4 +0,0 @@
-#ifndef __UM_APIC_H
-#define __UM_APIC_H
-
-#endif
diff --git a/arch/x86/um/asm/arch_hweight.h b/arch/x86/um/asm/arch_hweight.h
deleted file mode 100644
index 0d2d5fb..0000000
--- a/arch/x86/um/asm/arch_hweight.h
+++ /dev/null
@@ -1,7 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_UM_HWEIGHT_H
-#define _ASM_UM_HWEIGHT_H
-
-#include <asm-generic/bitops/arch_hweight.h>
-
-#endif
diff --git a/arch/x86/um/asm/barrier.h b/arch/x86/um/asm/barrier.h
deleted file mode 100644
index 4da3369..0000000
--- a/arch/x86/um/asm/barrier.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_UM_BARRIER_H_
-#define _ASM_UM_BARRIER_H_
-
-#include <asm/cpufeatures.h>
-#include <asm/alternative.h>
-
-/*
- * Force strict CPU ordering.
- * And yes, this is required on UP too when we're talking
- * to devices.
- */
-#ifdef CONFIG_X86_32
-
-#define mb() alternative("lock; addl $0,0(%%esp)", "mfence", X86_FEATURE_XMM2)
-#define rmb() alternative("lock; addl $0,0(%%esp)", "lfence", X86_FEATURE_XMM2)
-#define wmb() alternative("lock; addl $0,0(%%esp)", "sfence", X86_FEATURE_XMM)
-
-#else /* CONFIG_X86_32 */
-
-#define mb() asm volatile("mfence" : : : "memory")
-#define rmb() asm volatile("lfence" : : : "memory")
-#define wmb() asm volatile("sfence" : : : "memory")
-
-#endif /* CONFIG_X86_32 */
-
-#include <asm-generic/barrier.h>
-
-#endif
diff --git a/arch/x86/um/asm/desc.h b/arch/x86/um/asm/desc.h
deleted file mode 100644
index 34de4e9..0000000
--- a/arch/x86/um/asm/desc.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __UM_DESC_H
-#define __UM_DESC_H
-
-/* Taken from asm-i386/desc.h, it's the only thing we need. The rest wouldn't
- * compile, and has never been used. */
-#define LDT_empty(info) (\
- (info)->base_addr == 0 && \
- (info)->limit == 0 && \
- (info)->contents == 0 && \
- (info)->read_exec_only == 1 && \
- (info)->seg_32bit == 0 && \
- (info)->limit_in_pages == 0 && \
- (info)->seg_not_present == 1 && \
- (info)->useable == 0 )
-
-#endif
diff --git a/arch/x86/um/asm/irq_vectors.h b/arch/x86/um/asm/irq_vectors.h
deleted file mode 100644
index 272a81e..0000000
--- a/arch/x86/um/asm/irq_vectors.h
+++ /dev/null
@@ -1,10 +0,0 @@
-/*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __UM_IRQ_VECTORS_H
-#define __UM_IRQ_VECTORS_H
-
-#endif
-
