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authorDavid Howells <dhowells@redhat.com>2009-04-21 18:00:24 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-21 22:39:59 -0400
commit9b8de7479d0dbab1ed98b5b015d44232c9d3d08e (patch)
tree1b138996efe642f03699a7737af109dfa72ef830 /arch/alpha
parentccc5ff94c66e628d3c501b26ace5d4339667715d (diff)
FRV: Fix the section attribute on UP DECLARE_PER_CPU()
In non-SMP mode, the variable section attribute specified by DECLARE_PER_CPU() does not agree with that specified by DEFINE_PER_CPU(). This means that architectures that have a small data section references relative to a base register may throw up linkage errors due to too great a displacement between where the base register points and the per-CPU variable. On FRV, the .h declaration says that the variable is in the .sdata section, but the .c definition says it's actually in the .data section. The linker throws up the following errors: kernel/built-in.o: In function `release_task': kernel/exit.c:78: relocation truncated to fit: R_FRV_GPREL12 against symbol `per_cpu__process_counts' defined in .data section in kernel/built-in.o kernel/exit.c:78: relocation truncated to fit: R_FRV_GPREL12 against symbol `per_cpu__process_counts' defined in .data section in kernel/built-in.o To fix this, DECLARE_PER_CPU() should simply apply the same section attribute as does DEFINE_PER_CPU(). However, this is made slightly more complex by virtue of the fact that there are several variants on DEFINE, so these need to be matched by variants on DECLARE. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/alpha')
-rw-r--r--arch/alpha/include/asm/percpu.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/alpha/include/asm/percpu.h b/arch/alpha/include/asm/percpu.h
index 3495e8e00d70..e9e0bb5a23bf 100644
--- a/arch/alpha/include/asm/percpu.h
+++ b/arch/alpha/include/asm/percpu.h
@@ -73,6 +73,6 @@ extern unsigned long __per_cpu_offset[NR_CPUS];
73 73
74#endif /* SMP */ 74#endif /* SMP */
75 75
76#define DECLARE_PER_CPU(type, name) extern __typeof__(type) per_cpu_var(name) 76#include <asm-generic/percpu.h>
77 77
78#endif /* __ALPHA_PERCPU_H */ 78#endif /* __ALPHA_PERCPU_H */