On Sun, May 01, 2022 at 01:18:35PM +0200, Gerhard Engleder wrote:

ptp_convert_timestamp() is called in the RX path of network messages.
The current implementation takes ~5000ns on 1.2GHz A53. This is too much
for the hot path of packet processing.

Introduce hash table for fast vclock lookup in ptp_convert_timestamp().
The execution time of ptp_convert_timestamp() is reduced to ~700ns on
1.2GHz A53.

50 times faster... nice improvement!
 

Signed-off-by: Gerhard Engleder <redacted>

Acked-by: Richard Cochran <richardcochran@gmail.com>