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[POWERPC] Stop the TOC overflowing for large builds

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We were using -mno-minimal-toc on everything in arch/powerpc/kernel,
which means that all the functions in there were putting all their
TOC entries in the top-level TOC, and it was overflowing on an
allyesconfig build.  For various reasons, prom_init.c does need
-mno-minimal-toc, but the other .c files in there can use sub-TOCs
quite happily.  This change is sufficient for now to stop the TOC
overflowing; other directories under arch/powerpc also use
-mno-minimal-toc and could also be changed later if necessary.

Lmbench runs with and without this patch showed no significant speed
differences.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Stephen Rothwell 2007-11-07 16:13:29 +11:00 committed by Paul Mackerras
parent 54a24cbbd0
commit 08a644ecef
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/kernel/Makefile
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@ -3,7 +3,7 @@
#
ifeq ($(CONFIG_PPC64),y)
EXTRA_CFLAGS += -mno-minimal-toc
CFLAGS_prom_init.o += -mno-minimal-toc
endif
ifeq ($(CONFIG_PPC32),y)
CFLAGS_prom_init.o += -fPIC