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Commit 75eb767e authored by Nicholas Piggin's avatar Nicholas Piggin Committed by Michael Ellerman
Browse files

powerpc: Fix powerpc-specific watchdog build configuration 



The powerpc kernel/watchdog.o should be built when HARDLOCKUP_DETECTOR
and HAVE_HARDLOCKUP_DETECTOR_ARCH are both selected. If only the former
is selected, then the generic perf watchdog has been selected.

To simplify this check, introduce a new Kconfig symbol PPC_WATCHDOG that
depends on both. This Kconfig option means the powerpc specific
watchdog is enabled.

Without this patch, Book3E will attempt to build the powerpc watchdog.

Fixes: 2104180a ("powerpc/64s: implement arch-specific hardlockup watchdog")
Signed-off-by: default avatarNicholas Piggin <npiggin@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent f886f0f6

arch/powerpc/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -85,6 +85,17 @@ config NMI_IPI 
	depends on SMP && (DEBUGGER || KEXEC_CORE || HARDLOCKUP_DETECTOR)

	default y



config PPC_WATCHDOG

	bool

	depends on HARDLOCKUP_DETECTOR

	depends on HAVE_HARDLOCKUP_DETECTOR_ARCH

	default y

	help

	  This is a placeholder when the powerpc hardlockup detector

	  watchdog is selected (arch/powerpc/kernel/watchdog.c). It is

	  seleted via the generic lockup detector menu which is why we

	  have no standalone config option for it here.



config STACKTRACE_SUPPORT

	bool

	default y

arch/powerpc/kernel/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -38,7 +38,7 @@ obj-$(CONFIG_PPC64) += setup_64.o sys_ppc32.o \ 
				   signal_64.o ptrace32.o \

				   paca.o nvram_64.o firmware.o

obj-$(CONFIG_VDSO32)		+= vdso32/

obj-$(CONFIG_HARDLOCKUP_DETECTOR)	+= watchdog.o

obj-$(CONFIG_PPC_WATCHDOG)	+= watchdog.o

obj-$(CONFIG_HAVE_HW_BREAKPOINT)	+= hw_breakpoint.o

obj-$(CONFIG_PPC_BOOK3S_64)	+= cpu_setup_ppc970.o cpu_setup_pa6t.o

obj-$(CONFIG_PPC_BOOK3S_64)	+= cpu_setup_power.o

arch/powerpc/kernel/exceptions-64s.S

+3 −3
Original line number Diff line number Diff line
@@ -1314,7 +1314,7 @@ EXC_REAL_NONE(0x1800, 0x100) 
EXC_VIRT_NONE(0x5800, 0x100)

#endif



#if defined(CONFIG_HARDLOCKUP_DETECTOR) && defined(CONFIG_HAVE_HARDLOCKUP_DETECTOR_ARCH)

#ifdef CONFIG_PPC_WATCHDOG



#define MASKED_DEC_HANDLER_LABEL 3f
@@ -1335,10 +1335,10 @@ EXC_COMMON_BEGIN(soft_nmi_common) 
			ADD_NVGPRS;ADD_RECONCILE)

	b	ret_from_except



#else

#else /* CONFIG_PPC_WATCHDOG */

#define MASKED_DEC_HANDLER_LABEL 2f /* normal return */

#define MASKED_DEC_HANDLER(_H)

#endif

#endif /* CONFIG_PPC_WATCHDOG */



/*

 * An interrupt came in while soft-disabled. We set paca->irq_happened, then: