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authorMark Rutland <mark.rutland@arm.com>2022-05-11 14:17:32 +0100
committerWill Deacon <will@kernel.org>2022-06-23 15:39:21 +0100
commit4510bffb4d0246cdcc1f14c7367c026b807a862d (patch)
tree06872f0e84cb2f8cdadadbb103d8be7e6eceb0ef /arch/Kconfig
parenta111daf0c53ae91e71fd2bfe7497862d14132e3e (diff)
downloadlinux-4510bffb4d0246cdcc1f14c7367c026b807a862d.tar.bz2
arch: make TRACE_IRQFLAGS_NMI_SUPPORT generic
On most architectures, IRQ flag tracing is disabled in NMI context, and architectures need to define and select TRACE_IRQFLAGS_NMI_SUPPORT in order to enable this. Commit: 859d069ee1ddd878 ("lockdep: Prepare for NMI IRQ state tracking") Permitted IRQ flag tracing in NMI context, allowing lockdep to work in NMI context where an architecture had suitable entry logic. At the time, most architectures did not have such suitable entry logic, and this broke lockdep on such architectures. Thus, this was partially disabled in commit: ed00495333ccc80f ("locking/lockdep: Fix TRACE_IRQFLAGS vs. NMIs") ... with architectures needing to select TRACE_IRQFLAGS_NMI_SUPPORT to enable IRQ flag tracing in NMI context. Currently TRACE_IRQFLAGS_NMI_SUPPORT is defined under arch/x86/Kconfig.debug. Move it to arch/Kconfig so architectures can select it without having to provide their own definition. Since the regular TRACE_IRQFLAGS_SUPPORT is selected by arch/x86/Kconfig, the select of TRACE_IRQFLAGS_NMI_SUPPORT is moved there too. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20220511131733.4074499-2-mark.rutland@arm.com Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/Kconfig')
-rw-r--r--arch/Kconfig3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/Kconfig b/arch/Kconfig
index fcf9a41a4ef5..52eaa16d9b79 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -223,6 +223,9 @@ config HAVE_FUNCTION_DESCRIPTORS
config TRACE_IRQFLAGS_SUPPORT
bool
+config TRACE_IRQFLAGS_NMI_SUPPORT
+ bool
+
#
# An arch should select this if it provides all these things:
#