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SubjectRe: [PATCH] infiniband: cxgb4: use ktime_get for timestamps
On Mon, Nov 27, 2017 at 12:44:53PM +0100, Arnd Bergmann wrote:
> The debugfs file prints the difference between host timestamps as a
> seconds/nanoseconds tuple, along with a 64-bit nanoseconds hardware
> timestamp. The host time is read using getnstimeofday() which is
> deprecated because of the y2038 overflow, and it suffers from time jumps
> during settimeofday() and leap seconds.
>
> Converting to ktime_get_ts64() would solve those two, but I'm going
> a little further here by changing to ktime_get() and printing 64-bit
> nanoseconds on both host and hw timestamps. This simplifies the code
> further and makes the output easier to understand.
>
> The format of the debugfs file obviously changes here, but this should
> only be read by humans and not scripts, so I assume it's fine.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> drivers/infiniband/hw/cxgb4/device.c | 34 +++++++++++++++-------------------
> drivers/infiniband/hw/cxgb4/iw_cxgb4.h | 4 ++--
> drivers/infiniband/hw/cxgb4/qp.c | 6 +++---
> drivers/infiniband/hw/cxgb4/t4.h | 4 ++--
> 4 files changed, 22 insertions(+), 26 deletions(-)

Steve? This changes the format of the debugfs files, so please ack it
if it is Ok..

Thanks,
Jason

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