arch: tile: re-use kbasename() helper

kbasename() returns the filename part of a pathname.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

diff --git a/arch/tile/kernel/stack.c b/arch/tile/kernel/stack.c
index 362284a..c93977a 100644 (file)
--- a/arch/tile/kernel/stack.c
+++ b/arch/tile/kernel/stack.c
@@ -23,6 +23,7 @@
 #include <linux/mmzone.h>
 #include <linux/dcache.h>
 #include <linux/fs.h>
+#include <linux/string.h>
 #include <asm/backtrace.h>
 #include <asm/page.h>
 #include <asm/ucontext.h>
@@ -332,21 +333,18 @@ static void describe_addr(struct KBacktraceIterator *kbt,
        }
 
        if (vma->vm_file) {
-               char *s;
                p = d_path(&vma->vm_file->f_path, buf, bufsize);
                if (IS_ERR(p))
                        p = "?";
-               s = strrchr(p, '/');
-               if (s)
-                       p = s+1;
+               name = kbasename(p);
        } else {
-               p = "anon";
+               name = "anon";
        }
 
        /* Generate a string description of the vma info. */
-       namelen = strlen(p);
+       namelen = strlen(name);
        remaining = (bufsize - 1) - namelen;
-       memmove(buf, p, namelen);
+       memmove(buf, name, namelen);
        snprintf(buf + namelen, remaining, "[%lx+%lx] ",
                 vma->vm_start, vma->vm_end - vma->vm_start);
 }