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authorRalf Baechle <ralf@linux-mips.org>2014-04-16 04:46:11 +0400
committerRalf Baechle <ralf@linux-mips.org>2014-05-21 13:12:55 +0400
commit85c51c511d6373d4bc859458fd3f130015db31a5 (patch)
treec0b1076aba628760c3a9da5c46b818d2158634ad /arch/mips/math-emu/me-debugfs.c
parent6d18b6246d2bfb9da2d342553e41565e14422089 (diff)
downloadlinux-85c51c511d6373d4bc859458fd3f130015db31a5.tar.xz
MIPS: math-emu: Move all debug fs code to a separate file.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/math-emu/me-debugfs.c')
-rw-r--r--arch/mips/math-emu/me-debugfs.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/arch/mips/math-emu/me-debugfs.c b/arch/mips/math-emu/me-debugfs.c
new file mode 100644
index 000000000000..d895b38773df
--- /dev/null
+++ b/arch/mips/math-emu/me-debugfs.c
@@ -0,0 +1,59 @@
+#include <linux/cpumask.h>
+#include <linux/debugfs.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/percpu.h>
+#include <linux/types.h>
+#include <asm/fpu_emulator.h>
+#include <asm/local.h>
+
+DEFINE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats);
+
+static int fpuemu_stat_get(void *data, u64 *val)
+{
+ int cpu;
+ unsigned long sum = 0;
+
+ for_each_online_cpu(cpu) {
+ struct mips_fpu_emulator_stats *ps;
+ local_t *pv;
+
+ ps = &per_cpu(fpuemustats, cpu);
+ pv = (void *)ps + (unsigned long)data;
+ sum += local_read(pv);
+ }
+ *val = sum;
+ return 0;
+}
+DEFINE_SIMPLE_ATTRIBUTE(fops_fpuemu_stat, fpuemu_stat_get, NULL, "%llu\n");
+
+extern struct dentry *mips_debugfs_dir;
+static int __init debugfs_fpuemu(void)
+{
+ struct dentry *d, *dir;
+
+ if (!mips_debugfs_dir)
+ return -ENODEV;
+ dir = debugfs_create_dir("fpuemustats", mips_debugfs_dir);
+ if (!dir)
+ return -ENOMEM;
+
+#define FPU_STAT_CREATE(M) \
+ do { \
+ d = debugfs_create_file(#M , S_IRUGO, dir, \
+ (void *)offsetof(struct mips_fpu_emulator_stats, M), \
+ &fops_fpuemu_stat); \
+ if (!d) \
+ return -ENOMEM; \
+ } while (0)
+
+ FPU_STAT_CREATE(emulated);
+ FPU_STAT_CREATE(loads);
+ FPU_STAT_CREATE(stores);
+ FPU_STAT_CREATE(cp1ops);
+ FPU_STAT_CREATE(cp1xops);
+ FPU_STAT_CREATE(errors);
+
+ return 0;
+}
+__initcall(debugfs_fpuemu);