[linux-2.6-block.git] / lib / vdso / Kconfig

# SPDX-License-Identifier: GPL-2.0

config HAVE_GENERIC_VDSO
	bool

if HAVE_GENERIC_VDSO

config GENERIC_GETTIMEOFDAY
	bool
	help
	  This is a generic implementation of gettimeofday vdso.
	  Each architecture that enables this feature has to
	  provide the fallback implementation.

config GENERIC_VDSO_32
	bool
	depends on GENERIC_GETTIMEOFDAY && !64BIT
	help
	  This config option helps to avoid possible performance issues
	  in 32 bit only architectures.

config GENERIC_COMPAT_VDSO
	bool
	help
	  This config option enables the compat VDSO layer.

config GENERIC_VDSO_TIME_NS
	bool
	help
	  Selected by architectures which support time namespaces in the
	  VDSO

config GENERIC_VDSO_OVERFLOW_PROTECT
	bool
	help
	  Select to add multiplication overflow protection to the VDSO
	  time getter functions for the price of an extra conditional
	  in the hotpath.

endif
Commit	Line	Data
00b26474 VF	1	# SPDX-License-Identifier: GPL-2.0
	2
	3	config HAVE_GENERIC_VDSO
	4	bool
	5
	6	if HAVE_GENERIC_VDSO
	7
	8	config 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
	15	config 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
	22	config GENERIC_COMPAT_VDSO
	23	bool
	24	help
	25	This config option enables the compat VDSO layer.
	26
660fd04f TG	27	config GENERIC_VDSO_TIME_NS
	28	bool
	29	help
	30	Selected by architectures which support time namespaces in the
	31	VDSO
	32
0c68458b AH	33	config GENERIC_VDSO_OVERFLOW_PROTECT
	34	bool
	35	help
	36	Select to add multiplication overflow protection to the VDSO
	37	time getter functions for the price of an extra conditional
	38	in the hotpath.
	39
00b26474	40	endif