(This is the Xenomai part of the mechanism, please see the ipipe mailing list for the patches that provide the required basis infrastructure)
This patch series extends Xenomai with a new clock, CLOCK_HOST_REALTIME. It allows for sharing NTP-corrected real time timestamps between Linux/ipipe and Xenomai. The data are also available in userspace and can be read without switching to kernel mode. Notice, however, that the new clock only enables to read to time, but cannot serve as a full time basis. Some changes to the ipipe layer are required as basis. Changes since the last submission: - Unconditionally create an nkvdso instance to get rid of splitting the implementation into a pervasive/non-pervasive part - Remove explicit usage example, update clocktest code for the new clock instead - Include some smaller review comments The selection of Linux clocks suitable for our purposes remains as in the last series. Tested on x86_64, compile tested for all combinations of IPIPE_HOSTRT, XENO_OPT_HOSTRT and XENO_OPT_PERVASIVE include/asm-generic/hal.h | 11 + include/asm-generic/system.h | 3 include/asm-sim/system.h | 3 include/asm-x86/atomic.h | 5 include/nucleus/Makefile.am | 1 include/nucleus/hostrt.h | 54 ++++++ include/nucleus/seqlock_user.h | 57 ++++++ include/nucleus/vdso.h | 20 +- include/posix/time.h | 7 ksrc/nucleus/Kconfig | 4 ksrc/nucleus/module.c | 64 ++++++- ksrc/skins/posix/clock.c | 86 +++++++++- src/skins/posix/clock.c | 92 +++++++++- src/testsuite/clocktest/clocktest.c | 64 ++++++- src/testsuite/unit/check-vdso.c | 2 include/nucleus/Makefile.am | 1 src/testsuite/clocktest/clocktest.c | 292 +++++++++++++++++----------------- 17 files changed, 594 insertions(+), 172 deletions(-) _______________________________________________ Xenomai-core mailing list Xenomai-core@gna.org https://mail.gna.org/listinfo/xenomai-core
