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Date: Mon, 24 Jan 2022 19:36:33 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, kernel test robot <lkp@...el.com>, Randy Dunlap <rdunlap@...radead.org>, Stephen Rothwell <sfr@...b.auug.org.au>, Huang Rui <ray.huang@....com>, "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 5.16 0404/1039] x86, sched: Fix undefined reference to init_freq_invariance_cppc() build error From: Huang Rui <ray.huang@....com> [ Upstream commit 6c4ab1b86dac3954d15c00c1a6396d60a1023fab ] The init_freq_invariance_cppc function is implemented in smpboot and depends on CONFIG_SMP. MODPOST vmlinux.symvers MODINFO modules.builtin.modinfo GEN modules.builtin LD .tmp_vmlinux.kallsyms1 ld: drivers/acpi/cppc_acpi.o: in function `acpi_cppc_processor_probe': /home/ray/brahma3/linux/drivers/acpi/cppc_acpi.c:819: undefined reference to `init_freq_invariance_cppc' make: *** [Makefile:1161: vmlinux] Error 1 See https://lore.kernel.org/lkml/484af487-7511-647e-5c5b-33d4429acdec@infradead.org/. Fixes: 41ea667227ba ("x86, sched: Calculate frequency invariance for AMD systems") Reported-by: kernel test robot <lkp@...el.com> Reported-by: Randy Dunlap <rdunlap@...radead.org> Reported-by: Stephen Rothwell <sfr@...b.auug.org.au> Signed-off-by: Huang Rui <ray.huang@....com> [ rjw: Subject edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com> Signed-off-by: Sasha Levin <sashal@...nel.org> --- arch/x86/include/asm/topology.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h index cc164777e6619..2f0b6be8eaabc 100644 --- a/arch/x86/include/asm/topology.h +++ b/arch/x86/include/asm/topology.h @@ -221,7 +221,7 @@ static inline void arch_set_max_freq_ratio(bool turbo_disabled) } #endif -#ifdef CONFIG_ACPI_CPPC_LIB +#if defined(CONFIG_ACPI_CPPC_LIB) && defined(CONFIG_SMP) void init_freq_invariance_cppc(void); #define init_freq_invariance_cppc init_freq_invariance_cppc #endif -- 2.34.1
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