diff options
Diffstat (limited to 'arch/mips/math-emu')
| -rw-r--r-- | arch/mips/math-emu/cp1emu.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c index 80531b35cd6..d7f05b0abe1 100644 --- a/arch/mips/math-emu/cp1emu.c +++ b/arch/mips/math-emu/cp1emu.c @@ -35,6 +35,7 @@ * better performance by compiling with -msoft-float! */ #include <linux/sched.h> +#include <linux/debugfs.h> #include <asm/inst.h> #include <asm/bootinfo.h> @@ -1277,3 +1278,36 @@ int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx, return sig; } + +#ifdef CONFIG_DEBUG_FS +extern struct dentry *mips_debugfs_dir; +static int __init debugfs_fpuemu(void) +{ + struct dentry *d, *dir; + int i; + static struct { + const char *name; + unsigned int *v; + } vars[] __initdata = { + { "emulated", &fpuemustats.emulated }, + { "loads", &fpuemustats.loads }, + { "stores", &fpuemustats.stores }, + { "cp1ops", &fpuemustats.cp1ops }, + { "cp1xops", &fpuemustats.cp1xops }, + { "errors", &fpuemustats.errors }, + }; + + if (!mips_debugfs_dir) + return -ENODEV; + dir = debugfs_create_dir("fpuemustats", mips_debugfs_dir); + if (IS_ERR(dir)) + return PTR_ERR(dir); + for (i = 0; i < ARRAY_SIZE(vars); i++) { + d = debugfs_create_u32(vars[i].name, S_IRUGO, dir, vars[i].v); + if (IS_ERR(d)) + return PTR_ERR(d); + } + return 0; +} +__initcall(debugfs_fpuemu); +#endif |