diff options
| author | Atsushi Nemoto <anemo@mba.ocn.ne.jp> | 2007-06-30 00:55:48 +0900 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2007-07-10 17:33:04 +0100 |
| commit | 6312e0ee45236b6882cd26b2ccc167b1b91646fc (patch) | |
| tree | 1c5d17522d4232e4ee40512afffb199e7c99f6ce /arch/mips/kernel/setup.c | |
| parent | 2db30150fe4fe309c57087c661209c9ea0b5c21b (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.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index 4975da0bfb63..316685fca059 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 |