proc: : uninline name_to_int()

Save ~360 bytes.

	add/remove: 1/0 grow/shrink: 0/4 up/down: 104/-463 (-359)
	function                                     old     new   delta
	name_to_int                                    -     104    +104
	proc_pid_lookup                              217     126     -91
	proc_lookupfd_common                         212     121     -91
	proc_task_lookup                             289     194     -95
	__proc_create                                588     402    -186

Link: http://lkml.kernel.org/r/20170912194850.GA17730@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

3 files changed, 25 insertions, 22 deletions

diff --git a/fs/proc/Makefile b/fs/proc/Makefile
index f7456c4e7d0f..ead487e80510 100644
--- a/fs/proc/Makefile
+++ b/fs/proc/Makefile
@@ -21,6 +21,7 @@ proc-y	+= loadavg.o
 proc-y  += meminfo.o
 proc-y  += stat.o
 proc-y  += uptime.o
+proc-y  += util.o
 proc-y  += version.o
 proc-y  += softirqs.o
 proc-y  += namespaces.o
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index a34195e92b20..9aad373cf11d 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -103,28 +103,7 @@ static inline struct task_struct *get_proc_task(struct inode *inode)
 void task_dump_owner(struct task_struct *task, mode_t mode,
                      kuid_t *ruid, kgid_t *rgid);
 
-static inline unsigned name_to_int(const struct qstr *qstr)
-{
-        const char *name = qstr->name;
-        int len = qstr->len;
-        unsigned n = 0;
-
-        if (len > 1 && *name == '0')
-                goto out;
-        while (len-- > 0) {
-                unsigned c = *name++ - '0';
-                if (c > 9)
-                        goto out;
-                if (n >= (~0U-9)/10)
-                        goto out;
-                n *= 10;
-                n += c;
-        }
-        return n;
-out:
-        return ~0U;
-}
-
+unsigned name_to_int(const struct qstr *qstr);
 /*
  * Offset of the first process in the /proc root directory..
  */
diff --git a/fs/proc/util.c b/fs/proc/util.c
new file mode 100644
index 000000000000..c29aa497394b
--- /dev/null
+++ b/fs/proc/util.c
@@ -0,0 +1,23 @@
+#include <linux/dcache.h>
+
+unsigned name_to_int(const struct qstr *qstr)
+{
+        const char *name = qstr->name;
+        int len = qstr->len;
+        unsigned n = 0;
+
+        if (len > 1 && *name == '0')
+                goto out;
+        while (len-- > 0) {
+                unsigned c = *name++ - '0';
+                if (c > 9)
+                        goto out;
+                if (n >= (~0U-9)/10)
+                        goto out;
+                n *= 10;
+                n += c;
+        }
+        return n;
+out:
+        return ~0U;
+}