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authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2007-06-30 00:55:48 +0900
committerRalf Baechle <ralf@linux-mips.org>2007-07-10 17:33:04 +0100
commit6312e0ee45236b6882cd26b2ccc167b1b91646fc (patch)
tree1c5d17522d4232e4ee40512afffb199e7c99f6ce /arch/mips/kernel/setup.c
parent2db30150fe4fe309c57087c661209c9ea0b5c21b (diff)
[MIPS] Add some debugfs files to debug unaligned accesses
Currently a number of unaligned instructions is counted but not used. Add /debug/mips/unaligned_instructions file to show the value. And add /debug/mips/unaligned_action to control behavior upon an unaligned access. Possible actions are: 0: silently fixup the unaligned access. 1: send SIGBUS. 2: dump registers, process name, etc. and fixup. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/setup.c')
-rw-r--r--arch/mips/kernel/setup.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 4975da0bfb6..316685fca05 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -20,6 +20,7 @@
#include <linux/highmem.h>
#include <linux/console.h>
#include <linux/pfn.h>
+#include <linux/debugfs.h>
#include <asm/addrspace.h>
#include <asm/bootinfo.h>
@@ -574,3 +575,18 @@ __setup("nodsp", dsp_disable);
unsigned long kernelsp[NR_CPUS];
unsigned long fw_arg0, fw_arg1, fw_arg2, fw_arg3;
+
+#ifdef CONFIG_DEBUG_FS
+struct dentry *mips_debugfs_dir;
+static int __init debugfs_mips(void)
+{
+ struct dentry *d;
+
+ d = debugfs_create_dir("mips", NULL);
+ if (IS_ERR(d))
+ return PTR_ERR(d);
+ mips_debugfs_dir = d;
+ return 0;
+}
+arch_initcall(debugfs_mips);
+#endif