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Re: [PATCH] linux/fs.h - Convert debug functions declared inline __attribute__((format (printf,x,y) to statement expression macros
- From: Joe Perches <joe at perches dot com>
- To: David Rientjes <rientjes at google dot com>
- Cc: Matthew Wilcox <matthew at wil dot cx>, LKML <linux-kernel at vger dot kernel dot org>, Linus Torvalds <torvalds at linux-foundation dot org>, linux-fsdevel at vger dot kernel dot org, gcc at gcc dot gnu dot org
- Date: Tue, 26 Feb 2008 22:54:09 -0800
- Subject: Re: [PATCH] linux/fs.h - Convert debug functions declared inline __attribute__((format (printf,x,y) to statement expression macros
- References: <1204081722.19319.405.camel@localhost> <1204084947.19319.411.camel@localhost> <20080227041316.GA23188@parisc-linux.org> <alpine.DEB.1.00.0802262140160.23764@chino.kir.corp.google.com>
On Tue, 2008-02-26 at 21:44 -0800, David Rientjes wrote:
> I'm not seeing any change in text size with allyesconfig after applying
> this patch with latest git:
This is just x86 defconfig
> Joe, what version of gcc are you using?
$ gcc --version
gcc (GCC) 4.2.2 20071128 (prerelease) (4.2.2-3.1mdv2008.0)
It's definitely odd.
The .o size changes are inconsistent.
Some get bigger, some get smaller.
The versioning ones I understand but I have no idea why
changes in drivers/ or mm/ or net/ exist.
I think it's gcc optimization changes, but dunno...
Any good ideas?
$ git reset --hard
HEAD is now at 7704a8b... Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6
$ make mrproper ; make defconfig ; make > /dev/null
$ size vmlinux
text data bss dec hex filename
4716770 474560 618496 5809826 58a6a2 vmlinux
$ size $(find -type f -print | grep "\.o$" | grep -vP "(vmlinux|built-in|piggy|allsyms.)\.o$") > size.default
$ patch -p1 < inline/fs.h.d
$ make > /dev/null
$ size vmlinux
text data bss dec hex filename
4716706 474560 618496 5809762 58a662 vmlinux
$ size $(find -type f -print | grep "\.o$" | grep -vP "(vmlinux|built-in|piggy|allsyms.)\.o$") > size.inline_fs
$ diff --unified=0 size.default size.inline_fs
--- size.default 2008-02-26 22:18:33.000000000 -0800
+++ size.inline_fs 2008-02-26 22:33:27.000000000 -0800
@@ -21 +21 @@
- 79 0 0 79 4f ./arch/x86/boot/version.o
+ 85 0 0 85 55 ./arch/x86/boot/version.o
@@ -335 +335 @@
- 5206 72 12 5290 14aa ./drivers/base/core.o
+ 5201 72 12 5285 14a5 ./drivers/base/core.o
@@ -374 +374 @@
- 18192 104 1648 19944 4de8 ./drivers/char/tty_io.o
+ 18184 104 1648 19936 4de0 ./drivers/char/tty_io.o
@@ -390 +390 @@
- 4293 560 24 4877 130d ./drivers/char/hpet.o
+ 4287 560 24 4871 1307 ./drivers/char/hpet.o
@@ -473 +473 @@
- 38914 32 341 39287 9977 ./drivers/message/fusion/mptbase.o
+ 38922 32 341 39295 997f ./drivers/message/fusion/mptbase.o
@@ -492 +492 @@
- 81665 2613 4 84282 1493a ./drivers/net/tg3.o
+ 81659 2613 4 84276 14934 ./drivers/net/tg3.o
@@ -544 +544 @@
- 17508 845 552 18905 49d9 ./drivers/scsi/aic7xxx/aic79xx_osm.o
+ 17510 845 552 18907 49db ./drivers/scsi/aic7xxx/aic79xx_osm.o
@@ -581 +581 @@
- 74 4480 0 4554 11ca ./drivers/scsi/scsi_wait_scan.mod.o
+ 80 4480 0 4560 11d0 ./drivers/scsi/scsi_wait_scan.mod.o
@@ -774 +774 @@
- 1924 4 4 1932 78c ./fs/proc/kcore.o
+ 1922 4 4 1930 78a ./fs/proc/kcore.o
@@ -776 +776 @@
- 41462 652 80 42194 a4d2 ./fs/proc/proc.o
+ 41458 652 80 42190 a4ce ./fs/proc/proc.o
@@ -828 +828 @@
- 9583 80 0 9663 25bf ./fs/locks.o
+ 9571 80 0 9651 25b3 ./fs/locks.o
@@ -870 +870 @@
- 277 396 4 677 2a5 ./init/version.o
+ 281 396 4 681 2a9 ./init/version.o
@@ -926 +926 @@
- 8379 460 8 8847 228f ./kernel/sys.o
+ 8381 460 8 8849 2291 ./kernel/sys.o
@@ -954 +954 @@
- 13337 188 73 13598 351e ./kernel/module.o
+ 13341 188 73 13602 3522 ./kernel/module.o
@@ -1044 +1044 @@
- 1845 0 0 1845 735 ./mm/mremap.o
+ 1841 0 0 1841 731 ./mm/mremap.o
@@ -1052 +1052 @@
- 8781 44 2196 11021 2b0d ./mm/swapfile.o
+ 8777 44 2196 11017 2b09 ./mm/swapfile.o
@@ -1065 +1065 @@
- 2630 0 0 2630 a46 ./net/core/datagram.o
+ 2631 0 0 2631 a47 ./net/core/datagram.o
@@ -1101 +1101 @@
- 13190 24 0 13214 339e ./net/ipv4/tcp_output.o
+ 13192 24 0 13216 33a0 ./net/ipv4/tcp_output.o
@@ -1109 +1109 @@
- 6244 468 0 6712 1a38 ./net/ipv4/arp.o
+ 6239 468 0 6707 1a33 ./net/ipv4/arp.o
@@ -1138 +1138 @@
- 4660 132 44 4836 12e4 ./net/ipv6/ip6_fib.o
+ 4644 132 44 4820 12d4 ./net/ipv6/ip6_fib.o
@@ -1146 +1146 @@
- 16397 24 4 16425 4029 ./net/ipv6/mcast.o
+ 16399 24 4 16427 402b ./net/ipv6/mcast.o
@@ -1159 +1159 @@
- 143799 7424 3036 154259 25a93 ./net/ipv6/ipv6.o
+ 143787 7424 3036 154247 25a87 ./net/ipv6/ipv6.o
@@ -1202 +1202 @@
- 2109 600 0 2709 a95 ./net/xfrm/xfrm_algo.o
+ 2111 600 0 2711 a97 ./net/xfrm/xfrm_algo.o