6.1-stable review patch. If anyone has any objections, please let me know.
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From: Mark Rutland mark.rutland@arm.com
commit 657eef0a5420a02c02945ed8c87f2ddcbd255772 upstream.
Currently CONFIG_ARM64_USE_LSE_ATOMICS depends upon CONFIG_JUMP_LABEL, as the inline atomics were indirected with a static branch.
However, since commit:
21fb26bfb01ffe0d ("arm64: alternatives: add alternative_has_feature_*()")
... we use an alternative_branch (which is always available) rather than a static branch, and hence the dependency is unnecessary.
Remove the stale dependency, along with the stale include. This will allow the use of LSE atomics in kernels built with CONFIG_JUMP_LABEL=n, and reduces the risk of circular header dependencies via <asm/lse.h>.
Signed-off-by: Mark Rutland mark.rutland@arm.com Cc: Catalin Marinas catalin.marinas@arm.com Cc: Will Deacon will@kernel.org Link: https://lore.kernel.org/r/20221114125424.2998268-1-mark.rutland@arm.com Signed-off-by: Will Deacon will@kernel.org Signed-off-by: Oleksandr Tymoshenko ovt@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/arm64/Kconfig | 1 - arch/arm64/include/asm/lse.h | 1 - 2 files changed, 2 deletions(-)
--- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1752,7 +1752,6 @@ config ARM64_LSE_ATOMICS
config ARM64_USE_LSE_ATOMICS bool "Atomic instructions" - depends on JUMP_LABEL default y help As part of the Large System Extensions, ARMv8.1 introduces new --- a/arch/arm64/include/asm/lse.h +++ b/arch/arm64/include/asm/lse.h @@ -10,7 +10,6 @@
#include <linux/compiler_types.h> #include <linux/export.h> -#include <linux/jump_label.h> #include <linux/stringify.h> #include <asm/alternative.h> #include <asm/alternative-macros.h>