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Subject[PATCH] srcu: avoid escaped section names
From
The stringification operator, `#`, in the preprocessor escapes strings.
For example, `# "foo"` becomes `"\"foo\""`. GCC and Clang differ in how
they treat section names that contain \".

The portable solution is to not use a string literal with the
preprocessor stringification operator.

Link: https://bugs.llvm.org/show_bug.cgi?id=42950
Fixes: commit fe15b50cdeee ("srcu: Allocate per-CPU data for DEFINE_SRCU() in modules")
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
---
arch/arm/Kconfig | 1 +
arch/arm/mm/Kconfig | 11 +++++++++++
include/linux/srcutree.h | 2 +-
3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index fe2f17eb2b50..51200e371faf 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -358,6 +358,7 @@ config ARCH_EBSA110

config ARCH_EP93XX
bool "EP93xx-based"
+ depends on !LD_IS_LLD
select ARCH_SPARSEMEM_ENABLE
select ARM_AMBA
imply ARM_PATCH_PHYS_VIRT
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 65e4482e3849..c06787c9bb48 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -9,6 +9,7 @@ comment "Processor Type"
config CPU_ARM7TDMI
bool
depends on !MMU
+ depends on !LD_IS_LLD
select CPU_32v4T
select CPU_ABRT_LV4T
select CPU_CACHE_V4
@@ -23,6 +24,7 @@ config CPU_ARM7TDMI
# ARM720T
config CPU_ARM720T
bool
+ depends on !LD_IS_LLD
select CPU_32v4T
select CPU_ABRT_LV4T
select CPU_CACHE_V4
@@ -43,6 +45,7 @@ config CPU_ARM720T
config CPU_ARM740T
bool
depends on !MMU
+ depends on !LD_IS_LLD
select CPU_32v4T
select CPU_ABRT_LV4T
select CPU_CACHE_V4
@@ -61,6 +64,7 @@ config CPU_ARM740T
config CPU_ARM9TDMI
bool
depends on !MMU
+ depends on !LD_IS_LLD
select CPU_32v4T
select CPU_ABRT_NOMMU
select CPU_CACHE_V4
@@ -75,6 +79,7 @@ config CPU_ARM9TDMI
# ARM920T
config CPU_ARM920T
bool
+ depends on !LD_IS_LLD
select CPU_32v4T
select CPU_ABRT_EV4T
select CPU_CACHE_V4WT
@@ -94,6 +99,7 @@ config CPU_ARM920T
# ARM922T
config CPU_ARM922T
bool
+ depends on !LD_IS_LLD
select CPU_32v4T
select CPU_ABRT_EV4T
select CPU_CACHE_V4WT
@@ -114,6 +120,7 @@ config CPU_ARM922T
# ARM925T
config CPU_ARM925T
bool
+ depends on !LD_IS_LLD
select CPU_32v4T
select CPU_ABRT_EV4T
select CPU_CACHE_V4WT
@@ -153,6 +160,7 @@ config CPU_ARM926T
# FA526
config CPU_FA526
bool
+ depends on !LD_IS_LLD
select CPU_32v4
select CPU_ABRT_EV4
select CPU_CACHE_FA
@@ -172,6 +180,7 @@ config CPU_FA526
config CPU_ARM940T
bool
depends on !MMU
+ depends on !LD_IS_LLD
select CPU_32v4T
select CPU_ABRT_NOMMU
select CPU_CACHE_VIVT
@@ -278,6 +287,7 @@ config CPU_ARM1026
# SA110
config CPU_SA110
bool
+ depends on !LD_IS_LLD
select CPU_32v3 if ARCH_RPC
select CPU_32v4 if !ARCH_RPC
select CPU_ABRT_EV4
@@ -299,6 +309,7 @@ config CPU_SA110
# SA1100
config CPU_SA1100
bool
+ depends on !LD_IS_LLD
select CPU_32v4
select CPU_ABRT_EV4
select CPU_CACHE_V4WB
diff --git a/include/linux/srcutree.h b/include/linux/srcutree.h
index 9cfcc8a756ae..9de652f4e1bd 100644
--- a/include/linux/srcutree.h
+++ b/include/linux/srcutree.h
@@ -124,7 +124,7 @@ struct srcu_struct {
# define __DEFINE_SRCU(name, is_static) \
is_static struct srcu_struct name; \
struct srcu_struct * const __srcu_struct_##name \
- __section("___srcu_struct_ptrs") = &name
+ __section(___srcu_struct_ptrs) = &name
#else
# define __DEFINE_SRCU(name, is_static) \
static DEFINE_PER_CPU(struct srcu_data, name##_srcu_data); \
--
2.28.0.709.gb0816b6eb0-goog
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