Merge tag 'arc-4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

[cascardo/linux.git] / arch / arc / kernel / troubleshoot.c

diff --git a/arch/arc/kernel/troubleshoot.c b/arch/arc/kernel/troubleshoot.c
index 934150e..82f9bc8 100644 (file)
--- a/arch/arc/kernel/troubleshoot.c
+++ b/arch/arc/kernel/troubleshoot.c
@@ -237,113 +237,3 @@ void show_kernel_fault_diag(const char *str, struct pt_regs *regs,
        if (!user_mode(regs))
                show_stacktrace(current, regs);
 }
-
-#ifdef CONFIG_DEBUG_FS
-
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/mount.h>
-#include <linux/pagemap.h>
-#include <linux/init.h>
-#include <linux/namei.h>
-#include <linux/debugfs.h>
-
-static struct dentry *test_dentry;
-static struct dentry *test_dir;
-static struct dentry *test_u32_dentry;
-
-static u32 clr_on_read = 1;
-
-#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
-u32 numitlb, numdtlb, num_pte_not_present;
-
-static int fill_display_data(char *kbuf)
-{
-       size_t num = 0;
-       num += sprintf(kbuf + num, "I-TLB Miss %x\n", numitlb);
-       num += sprintf(kbuf + num, "D-TLB Miss %x\n", numdtlb);
-       num += sprintf(kbuf + num, "PTE not present %x\n", num_pte_not_present);
-
-       if (clr_on_read)
-               numitlb = numdtlb = num_pte_not_present = 0;
-
-       return num;
-}
-
-static int tlb_stats_open(struct inode *inode, struct file *file)
-{
-       file->private_data = (void *)__get_free_page(GFP_KERNEL);
-       return 0;
-}
-
-/* called on user read(): display the counters */
-static ssize_t tlb_stats_output(struct file *file,     /* file descriptor */
-                               char __user *user_buf,  /* user buffer */
-                               size_t len,             /* length of buffer */
-                               loff_t *offset)         /* offset in the file */
-{
-       size_t num;
-       char *kbuf = (char *)file->private_data;
-
-       /* All of the data can he shoved in one iteration */
-       if (*offset != 0)
-               return 0;
-
-       num = fill_display_data(kbuf);
-
-       /* simple_read_from_buffer() is helper for copy to user space
-          It copies up to @2 (num) bytes from kernel buffer @4 (kbuf) at offset
-          @3 (offset) into the user space address starting at @1 (user_buf).
-          @5 (len) is max size of user buffer
-        */
-       return simple_read_from_buffer(user_buf, num, offset, kbuf, len);
-}
-
-/* called on user write : clears the counters */
-static ssize_t tlb_stats_clear(struct file *file, const char __user *user_buf,
-                              size_t length, loff_t *offset)
-{
-       numitlb = numdtlb = num_pte_not_present = 0;
-       return length;
-}
-
-static int tlb_stats_close(struct inode *inode, struct file *file)
-{
-       free_page((unsigned long)(file->private_data));
-       return 0;
-}
-
-static const struct file_operations tlb_stats_file_ops = {
-       .read = tlb_stats_output,
-       .write = tlb_stats_clear,
-       .open = tlb_stats_open,
-       .release = tlb_stats_close
-};
-#endif
-
-static int __init arc_debugfs_init(void)
-{
-       test_dir = debugfs_create_dir("arc", NULL);
-
-#ifdef CONFIG_ARC_DBG_TLB_MISS_COUNT
-       test_dentry = debugfs_create_file("tlb_stats", 0444, test_dir, NULL,
-                                         &tlb_stats_file_ops);
-#endif
-
-       test_u32_dentry =
-           debugfs_create_u32("clr_on_read", 0444, test_dir, &clr_on_read);
-
-       return 0;
-}
-
-module_init(arc_debugfs_init);
-
-static void __exit arc_debugfs_exit(void)
-{
-       debugfs_remove(test_u32_dentry);
-       debugfs_remove(test_dentry);
-       debugfs_remove(test_dir);
-}
-module_exit(arc_debugfs_exit);
-
-#endif