Messages in this thread Patch in this message |  | | Date | Tue, 29 Sep 2020 12:22:04 -0700 | Subject | [PATCH] srcu: avoid escaped section names | From | Nick Desaulniers <> |
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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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