Changes in namespace_internal.h

f21f7b5162e9dbde6d3d5ce727d4ca2552d76ce9 - Merge tag 'timers-vdso-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Tue, 14 Apr 2026 19:53:44 +0200

Merge tag 'timers-vdso-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipPull vdso updates from Thomas Gleixner: - Make the handling of compat functions consistent and more robust - Rework the underlying data store so that it is dynamically allocated, which allows the conversion of the last holdout SPARC64 to the generic VDSO implementation - Rework the SPARC64 VDSO to utilize the generic implementation - Mop up the left overs of the non-generic VDSO support in the core code - Expand the VDSO selftest and make them more robust - Allow time namespaces to be enabled independently of the generic VDSO support, which was not possible before due to SPARC64 not using it - Various cleanups and improvements in the related code* tag 'timers-vdso-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits) timens: Use task_lock guard in timens_get*() timens: Use mutex guard in proc_timens_set_offset() timens: Simplify some calls to put_time_ns() timens: Add a __free() wrapper for put_time_ns() timens: Remove dependency on the vDSO vdso/timens: Move functions to new file selftests: vDSO: vdso_test_correctness: Add a test for time() selftests: vDSO: vdso_test_correctness: Use facilities from parse_vdso.c selftests: vDSO: vdso_test_correctness: Handle different tv_usec types selftests: vDSO: vdso_test_correctness: Drop SYS_getcpu fallbacks selftests: vDSO: vdso_test_gettimeofday: Remove nolibc checks Revert "selftests: vDSO: parse_vdso: Use UAPI headers instead of libc headers" random: vDSO: Remove ifdeffery random: vDSO: Trim vDSO includes vdso/datapage: Trim down unnecessary includes vdso/datapage: Remove inclusion of gettimeofday.h vdso/helpers: Explicitly include vdso/processor.h vdso/gettimeofday: Add explicit includes random: vDSO: Add explicit includes MIPS: vdso: Explicitly include asm/vdso/vdso.h ... List of files: /linux/kernel/time/namespace_internal.h

1b6c89285d37114d7efe8ab04102a542581cd7da - timens: Remove dependency on the vDSO

Thu, 26 Mar 2026 12:42:31 +0100

timens: Remove dependency on the vDSOPreviously, missing time namespace support in the vDSO meant that timenamespaces needed to be disabled globally. This was expressed in a harddependency on the generic vDSO library. This also meant that architectureswithout any vDSO or only a stub vDSO could not enable time namespaces.Now that all architectures using a real vDSO are using the generic library,that dependency is not necessary anymore.Remove the dependency and let all architectures enable time namespaces.Signed-off-by: Thomas Weißschuh Signed-off-by: Thomas Gleixner Link: https://patch.msgid.link/20260326-vdso-timens-decoupling-v2-2-c82693a7775f@linutronix.de List of files: /linux/kernel/time/namespace_internal.h

5dc9cf835aba73c882348aa4f99be83b6e45ad9b - vdso/timens: Move functions to new file

Thu, 26 Mar 2026 12:42:30 +0100

vdso/timens: Move functions to new fileAs a preparation of the untangling of time namespaces and the vDSO, movethe glue functions between those subsystems into a new file.While at it, switch the mutex lock and mmap_read_lock() in the vDSOnamespace code to guard().Signed-off-by: Thomas Weißschuh Signed-off-by: Thomas Gleixner Link: https://patch.msgid.link/20260326-vdso-timens-decoupling-v2-1-c82693a7775f@linutronix.de List of files: /linux/kernel/time/namespace_internal.h