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| author |   Gerhard Engleder <gerhard@engleder-embedded.com> | 2022-05-06 22:01:41 +0200 |
|---|---|---|
| committer |   Paolo Abeni <pabeni@redhat.com> | 2022-05-10 09:48:09 +0200 |
| commit | fcf308e50928a9c9eca90c56f9fc6885005dafd1 (patch) | |
| tree | 951ac90c002ecfca1fe24c103724808712cdaec0 /net/core/dev.c | |
| parent | ptp: Support late timestamp determination (diff) | |
| download | linux-rng-fcf308e50928a9c9eca90c56f9fc6885005dafd1.tar.xz linux-rng-fcf308e50928a9c9eca90c56f9fc6885005dafd1.zip | |
ptp: Speed up vclock lookup
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.
Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/core/dev.c')
0 files changed, 0 insertions, 0 deletions