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Subject[PATCH 1/2] 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

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---

fs/proc/Makefile | 1 +
fs/proc/internal.h | 23 +----------------------
fs/proc/util.c | 23 +++++++++++++++++++++++
3 files changed, 25 insertions(+), 22 deletions(-)

--- a/fs/proc/Makefile
+++ b/fs/proc/Makefile
@@ -20,6 +20,7 @@ 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
--- 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..
*/
--- /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;
+}
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