The patch titled
Subject: proc: : uninline name_to_int()
has been added to the -mm tree. Its filename is
proc-uninline-name_to_int.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/proc-uninline-name_to_int.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/proc-uninline-name_to_int.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Subject: 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@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/Makefile | 1 +
fs/proc/internal.h | 23 +----------------------
fs/proc/util.c | 23 +++++++++++++++++++++++
3 files changed, 25 insertions(+), 22 deletions(-)
diff -puN fs/proc/internal.h~proc-uninline-name_to_int fs/proc/internal.h
--- a/fs/proc/internal.h~proc-uninline-name_to_int
+++ a/fs/proc/internal.h
@@ -103,28 +103,7 @@ static inline struct task_struct *get_pr
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 -puN fs/proc/Makefile~proc-uninline-name_to_int fs/proc/Makefile
--- a/fs/proc/Makefile~proc-uninline-name_to_int
+++ a/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
diff -puN /dev/null fs/proc/util.c
--- /dev/null
+++ a/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;
+}
_
Patches currently in -mm which might be from adobriyan@xxxxxxxxx are
proc-uninline-name_to_int.patch
proc-use-do-while-in-name_to_int.patch
seq_file-delete-small-value-optimization.patch
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