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| author | Ingo Molnar <mingo@elte.hu> | 2009-04-06 09:02:57 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-06 09:02:57 +0200 |
| commit | f541ae326fa120fa5c57433e4d9a133df212ce41 (patch) | |
| tree | bdbd94ec72cfc601118051cb35e8617d55510177 /arch/sh/kernel/io_trapped.c | |
| parent | x86: perf_counter cleanup (diff) | |
| parent | Merge branch 'audit.b62' of git://git.kernel.org/pub/scm/linux/kernel/git/vir... (diff) | |
| download | linux-f541ae326fa120fa5c57433e4d9a133df212ce41.tar.xz linux-f541ae326fa120fa5c57433e4d9a133df212ce41.zip | |
Merge branch 'linus' into perfcounters/core-v2
Merge reason: we have gathered quite a few conflicts, need to merge upstream
Conflicts:
arch/powerpc/kernel/Makefile
arch/x86/ia32/ia32entry.S
arch/x86/include/asm/hardirq.h
arch/x86/include/asm/unistd_32.h
arch/x86/include/asm/unistd_64.h
arch/x86/kernel/cpu/common.c
arch/x86/kernel/irq.c
arch/x86/kernel/syscall_table_32.S
arch/x86/mm/iomap_32.c
include/linux/sched.h
kernel/Makefile
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/sh/kernel/io_trapped.c')
| -rw-r--r-- | arch/sh/kernel/io_trapped.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/sh/kernel/io_trapped.c b/arch/sh/kernel/io_trapped.c index 39cd7f3aec7b..c22853b059ef 100644 --- a/arch/sh/kernel/io_trapped.c +++ b/arch/sh/kernel/io_trapped.c @@ -14,6 +14,7 @@ #include <linux/bitops.h> #include <linux/vmalloc.h> #include <linux/module.h> +#include <linux/init.h> #include <asm/system.h> #include <asm/mmu_context.h> #include <asm/uaccess.h> @@ -32,6 +33,15 @@ EXPORT_SYMBOL_GPL(trapped_mem); #endif static DEFINE_SPINLOCK(trapped_lock); +static int trapped_io_disable __read_mostly; + +static int __init trapped_io_setup(char *__unused) +{ + trapped_io_disable = 1; + return 1; +} +__setup("noiotrap", trapped_io_setup); + int register_trapped_io(struct trapped_io *tiop) { struct resource *res; @@ -39,6 +49,9 @@ int register_trapped_io(struct trapped_io *tiop) struct page *pages[TRAPPED_PAGES_MAX]; int k, n; + if (unlikely(trapped_io_disable)) + return 0; + /* structure must be page aligned */ if ((unsigned long)tiop & (PAGE_SIZE - 1)) goto bad; |