Revision 3ac805d2afd3fa4a07cb5bcf352fd7fa83f28935 authored by Ingo Molnar on 03 July 2009, 10:51:19 UTC, committed by Ingo Molnar on 03 July 2009, 11:26:43 UTC
cmpxchg8b is a huge instruction in terms of register footprint,
we almost never want to inline it, not even within the same
code module.
GCC 4.3 still messes up for two functions, under-judging the
true cost of this instruction - so annotate two key functions
to reduce the bloat:
arch/x86/lib/atomic64_32.o:
text data bss dec hex filename
1763 0 0 1763 6e3 atomic64_32.o.before
435 0 0 435 1b3 atomic64_32.o.after
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
LKML-Reference: <alpine.LFD.2.01.0907021653030.3210@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
1 parent 824975e
| File | Mode | Size |
|---|---|---|
| Makefile | -rw-r--r-- | 384 bytes |
| compat.c | -rw-r--r-- | 17.0 KB |
| compat_mq.c | -rw-r--r-- | 4.0 KB |
| ipc_sysctl.c | -rw-r--r-- | 6.9 KB |
| ipcns_notifier.c | -rw-r--r-- | 2.2 KB |
| mq_sysctl.c | -rw-r--r-- | 2.8 KB |
| mqueue.c | -rw-r--r-- | 30.6 KB |
| msg.c | -rw-r--r-- | 20.8 KB |
| msgutil.c | -rw-r--r-- | 2.8 KB |
| namespace.c | -rw-r--r-- | 3.3 KB |
| sem.c | -rw-r--r-- | 33.9 KB |
| shm.c | -rw-r--r-- | 25.7 KB |
| util.c | -rw-r--r-- | 22.9 KB |
| util.h | -rw-r--r-- | 5.2 KB |
Computing file changes ...
