On Thu, Sep 18, 2014 at 03:59:32PM +0100, Nathan Lynch wrote:
This series contains the necessary changes to allow architected timer
access from user-space on 32-bit ARM. This allows the VDSO to support
high resolution timestamps for clock_gettime and gettimeofday. This
also merges substantially similar code from arm and arm64 into the
core arm_arch_timer driver.
The functional changes are:
- When available, CNTVCT is made readable by user space on arm, as it
is on arm64.
- The clocksource name becomes "arch_mem_counter" if CP15 access to
the counter is not available.
These changes have been carried as part of the ARM VDSO patch set over
the last several months, but I am splitting them out here as I assume
they should go through the clocksource maintainers.
For the series:
Acked-by: Will Deacon [off-list ref]
I'm not sure which tree the arch-timer stuff usually goes through, but
the arm/arm64 bits look fine so I'm happy for them to merged together.
Will