Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel…

…/git/rkuo/linux-hexagon-kernel Pull arch/hexagon updates from Richard Kuo: "Build cleanup and a few misc fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rkuo/linux-hexagon-kernel: Hexagon: fix signal delivery for debug traps Hexagon: set ARCH_DMA_MINALIGN Hexagon: fix alignment of init_task in RW_DATA_SECTION hexagon: Fix build failures in linux-next
anthraxx · Dec 20, 2014 · 5be95b7 · 5be95b7
2 parents 971d9e0 + 8914d7e
commit 5be95b7
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Showing 8 changed files with 38 additions and 27 deletions.
diff --git a/arch/hexagon/include/asm/cache.h b/arch/hexagon/include/asm/cache.h
@@ -1,7 +1,7 @@
 /*
  * Cache definitions for the Hexagon architecture
  *
- * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2010-2011,2014 The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -25,6 +25,8 @@
 #define L1_CACHE_SHIFT		(5)
 #define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
 
+#define ARCH_DMA_MINALIGN	L1_CACHE_BYTES
+
 #define __cacheline_aligned	__aligned(L1_CACHE_BYTES)
 #define ____cacheline_aligned	__aligned(L1_CACHE_BYTES)
 

diff --git a/arch/hexagon/include/asm/cacheflush.h b/arch/hexagon/include/asm/cacheflush.h
@@ -21,10 +21,7 @@
 #ifndef _ASM_CACHEFLUSH_H
 #define _ASM_CACHEFLUSH_H
 
-#include <linux/cache.h>
-#include <linux/mm.h>
-#include <asm/string.h>
-#include <asm-generic/cacheflush.h>
+#include <linux/mm_types.h>
 
 /* Cache flushing:
  *
@@ -41,6 +38,20 @@
 #define LINESIZE	32
 #define LINEBITS	5
 
+#define flush_cache_all()			do { } while (0)
+#define flush_cache_mm(mm)			do { } while (0)
+#define flush_cache_dup_mm(mm)			do { } while (0)
+#define flush_cache_range(vma, start, end)	do { } while (0)
+#define flush_cache_page(vma, vmaddr, pfn)	do { } while (0)
+#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
+#define flush_dcache_page(page)			do { } while (0)
+#define flush_dcache_mmap_lock(mapping)		do { } while (0)
+#define flush_dcache_mmap_unlock(mapping)	do { } while (0)
+#define flush_icache_page(vma, pg)		do { } while (0)
+#define flush_icache_user_range(vma, pg, adr, len)	do { } while (0)
+#define flush_cache_vmap(start, end)		do { } while (0)
+#define flush_cache_vunmap(start, end)		do { } while (0)
+
 /*
  * Flush Dcache range through current map.
  */
@@ -49,7 +60,6 @@ extern void flush_dcache_range(unsigned long start, unsigned long end);
 /*
  * Flush Icache range through current map.
  */
-#undef flush_icache_range
 extern void flush_icache_range(unsigned long start, unsigned long end);
 
 /*
@@ -79,19 +89,11 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
 	/*  generic_ptrace_pokedata doesn't wind up here, does it?  */
 }
 
-#undef copy_to_user_page
-static inline void copy_to_user_page(struct vm_area_struct *vma,
-					     struct page *page,
-					     unsigned long vaddr,
-					     void *dst, void *src, int len)
-{
-	memcpy(dst, src, len);
-	if (vma->vm_flags & VM_EXEC) {
-		flush_icache_range((unsigned long) dst,
-		(unsigned long) dst + len);
-	}
-}
+void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
+		       unsigned long vaddr, void *dst, void *src, int len);
 
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+	memcpy(dst, src, len)
 
 extern void hexagon_inv_dcache_range(unsigned long start, unsigned long end);
 extern void hexagon_clean_dcache_range(unsigned long start, unsigned long end);

diff --git a/arch/hexagon/include/asm/io.h b/arch/hexagon/include/asm/io.h
@@ -24,14 +24,9 @@
 #ifdef __KERNEL__
 
 #include <linux/types.h>
-#include <linux/delay.h>
-#include <linux/vmalloc.h>
-#include <asm/string.h>
-#include <asm/mem-layout.h>
 #include <asm/iomap.h>
 #include <asm/page.h>
 #include <asm/cacheflush.h>
-#include <asm/tlbflush.h>
 
 /*
  * We don't have PCI yet.

diff --git a/arch/hexagon/kernel/setup.c b/arch/hexagon/kernel/setup.c
@@ -19,6 +19,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/delay.h>
 #include <linux/bootmem.h>
 #include <linux/mmzone.h>
 #include <linux/mm.h>

diff --git a/arch/hexagon/kernel/traps.c b/arch/hexagon/kernel/traps.c
@@ -1,7 +1,7 @@
 /*
  * Kernel traps/events for Hexagon processor
  *
- * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -423,7 +423,7 @@ void do_trap0(struct pt_regs *regs)
 			 */
 			info.si_code = TRAP_BRKPT;
 			info.si_addr = (void __user *) pt_elr(regs);
-			send_sig_info(SIGTRAP, &info, current);
+			force_sig_info(SIGTRAP, &info, current);
 		} else {
 #ifdef CONFIG_KGDB
 			kgdb_handle_exception(pt_cause(regs), SIGTRAP,

diff --git a/arch/hexagon/kernel/vmlinux.lds.S b/arch/hexagon/kernel/vmlinux.lds.S
@@ -1,7 +1,7 @@
 /*
  * Linker script for Hexagon kernel
  *
- * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2010-2014, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -59,7 +59,7 @@ SECTIONS
 	INIT_DATA_SECTION(PAGE_SIZE)
 
 	_sdata = .;
-		RW_DATA_SECTION(32,PAGE_SIZE,PAGE_SIZE)
+		RW_DATA_SECTION(32,PAGE_SIZE,_THREAD_SIZE)
 		RO_DATA_SECTION(PAGE_SIZE)
 	_edata = .;
 

diff --git a/arch/hexagon/mm/cache.c b/arch/hexagon/mm/cache.c
@@ -127,3 +127,13 @@ void flush_cache_all_hexagon(void)
 	local_irq_restore(flags);
 	mb();
 }
+
+void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
+		       unsigned long vaddr, void *dst, void *src, int len)
+{
+	memcpy(dst, src, len);
+	if (vma->vm_flags & VM_EXEC) {
+		flush_icache_range((unsigned long) dst,
+		(unsigned long) dst + len);
+	}
+}
diff --git a/arch/hexagon/mm/ioremap.c b/arch/hexagon/mm/ioremap.c
@@ -20,6 +20,7 @@
 
 #include <linux/io.h>
 #include <linux/vmalloc.h>
+#include <linux/mm.h>
 
 void __iomem *ioremap_nocache(unsigned long phys_addr, unsigned long size)
 {