Files
odroid-linux/include/linux
Denys Vlasenko 4b0f326163 include/linux/page-flags.h: force inlining of selected page flag modifications
Sometimes gcc mysteriously doesn't inline
very small functions we expect to be inlined. See

    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66122

With this .config:
http://busybox.net/~vda/kernel_config_OPTIMIZE_INLINING_and_Os,
the following functions get deinlined many times.
Examples of disassembly:

<SetPageUptodate> (43 copies, 141 calls):
       55                      push   %rbp
       48 89 e5                mov    %rsp,%rbp
       f0 80 0f 08             lock orb $0x8,(%rdi)
       5d                      pop    %rbp
       c3                      retq

<PagePrivate> (10 copies, 134 calls):
       48 8b 07                mov    (%rdi),%rax
       55                      push   %rbp
       48 89 e5                mov    %rsp,%rbp
       48 c1 e8 0b             shr    $0xb,%rax
       83 e0 01                and    $0x1,%eax
       5d                      pop    %rbp
       c3                      retq

This patch fixes this via s/inline/__always_inline/.

Code size decrease after the patch is ~7k:

    text     data      bss       dec     hex filename
92125002 20826048 36417536 149368586 8e72f0a vmlinux
92118087 20826112 36417536 149361735 8e71447 vmlinux7_pageops_after

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Graf <tgraf@suug.ch>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-03-17 15:09:34 -07:00
..
2015-10-17 21:22:08 -07:00
2015-10-07 18:08:15 +01:00
2016-01-05 18:04:58 +01:00
2015-11-16 15:41:49 +00:00
2015-12-23 08:37:10 -07:00
2016-02-11 10:07:18 -05:00
2016-02-13 15:34:28 +01:00
2016-03-15 16:55:16 -07:00
2015-12-22 09:38:34 -07:00
2015-12-06 12:46:31 +01:00
2015-09-04 16:54:41 -07:00
2015-10-18 10:14:39 -07:00
2016-01-08 01:12:06 +01:00
2016-02-26 13:28:35 +02:00
2015-10-30 01:47:27 -04:00
2015-12-28 13:41:50 +01:00
2016-01-15 17:56:32 -08:00
2015-11-25 09:22:00 -07:00
2015-10-23 05:44:28 -07:00
2016-01-20 17:09:18 -08:00
2015-10-01 15:06:43 +02:00
2015-12-14 10:03:46 +01:00
2016-01-15 17:56:32 -08:00
2016-03-09 15:43:42 -08:00
2016-01-15 17:56:32 -08:00
2015-10-27 18:55:31 -07:00
2016-03-16 11:51:08 -07:00
2016-03-17 15:09:34 -07:00
2015-10-20 22:10:45 +08:00
2016-03-05 12:24:06 -08:00
2016-02-08 15:20:01 -05:00
2015-09-10 13:29:01 -07:00
2016-03-15 16:55:16 -07:00
2016-02-11 18:35:48 -08:00
2016-02-11 18:35:48 -08:00
2016-01-07 14:31:27 -05:00
2016-02-10 01:11:54 +01:00
2016-03-09 15:15:32 -08:00
2015-10-06 17:08:19 +02:00
2015-10-22 08:59:18 -07:00
2015-11-16 09:23:47 +01:00
2016-01-10 22:13:15 -05:00
2015-12-13 19:59:48 -08:00
2016-01-04 16:11:11 -05:00
2016-03-15 16:55:16 -07:00
2016-01-04 10:20:19 -05:00
2015-11-05 14:36:09 -05:00
2015-10-01 09:57:59 -07:00
2015-10-19 01:01:21 +02:00
2015-11-23 09:44:58 +01:00
2015-12-21 15:28:11 -07:00
2016-01-12 20:47:02 +02:00
2016-01-14 16:00:49 -08:00
2015-12-03 07:24:29 -08:00
2015-09-08 15:35:28 -07:00