x86/intel_rdt: Select KERNFS when enabling INTEL_RDT_A

arch/x86/kernel/cpu/intel_rdt_rdtgroup.c: In function 'rdtgroup_kn_lock_live':
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c:658:2: error: implicit declaration of
function 'kernfs_break_active_protection' [-Werror=implicit-function-declaration]

Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Shaohua Li <shli@fb.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Tony Luck <tony.luck@intel.com>

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 770fb5f23cea5a9488bdc0da67e7959f8d4c64de..dcca4ec427703a5a886333b5bd4d490c74487b25 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -411,6 +411,7 @@ config INTEL_RDT_A
        bool "Intel Resource Director Technology Allocation support"
        default n
        depends on X86 && CPU_SUP_INTEL
+       select KERNFS
        help
          Select to enable resource allocation which is a sub-feature of
          Intel Resource Director Technology(RDT). More information about