1# SPDX-License-Identifier: GPL-2.0 2 3config HAVE_GENERIC_VDSO 4 bool 5 6if HAVE_GENERIC_VDSO 7 8config GENERIC_GETTIMEOFDAY 9 bool 10 help 11 This is a generic implementation of gettimeofday vdso. 12 Each architecture that enables this feature has to 13 provide the fallback implementation. 14 15config GENERIC_VDSO_32 16 bool 17 depends on GENERIC_GETTIMEOFDAY && !64BIT 18 help 19 This config option helps to avoid possible performance issues 20 in 32 bit only architectures. 21 22config GENERIC_COMPAT_VDSO 23 bool 24 help 25 This config option enables the compat VDSO layer. 26 27config CROSS_COMPILE_COMPAT_VDSO 28 string "32 bit Toolchain prefix for compat vDSO" 29 default "" 30 depends on GENERIC_COMPAT_VDSO 31 help 32 Defines the cross-compiler prefix for compiling compat vDSO. 33 If a 64 bit compiler (i.e. x86_64) can compile the VDSO for 34 32 bit, it does not need to define this parameter. 35 36endif 37