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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
This commit is contained in:
Linus Torvalds 2014-12-19 17:57:51 -08:00
parent 971d9e07e1 8914d7e857
commit 5be95b7e24
8 changed files with 38 additions and 27 deletions
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4
arch/hexagon/include/asm/cache.h
View File

@ -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)

36
arch/hexagon/include/asm/cacheflush.h
View File

@ -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);

5
arch/hexagon/include/asm/io.h
View File

@ -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.

1
arch/hexagon/kernel/setup.c
View File

@ -19,6 +19,7 @@
*/
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/bootmem.h>
#include <linux/mmzone.h>
#include <linux/mm.h>

4
arch/hexagon/kernel/traps.c
View File

@ -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,

4
arch/hexagon/kernel/vmlinux.lds.S
View File

@ -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 = .;

10
arch/hexagon/mm/cache.c
View File

@ -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);
}
}

1
arch/hexagon/mm/ioremap.c
View File

@ -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)
{