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| author | Heiko Carstens <hca@linux.ibm.com> | 2024-02-03 11:45:23 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2024-02-16 14:30:17 +0100 |
| commit | dcd3e1de9d17dc43dfed87a9fc814b9dec508043 (patch) | |
| tree | f4dc28be4bafb8cde3a619428250517fac82244d /tools/perf/scripts/python/event_analyzing_sample.py | |
| parent | s390/checksum: provide vector register variant of csum_partial() (diff) | |
| download | linux-dcd3e1de9d17dc43dfed87a9fc814b9dec508043.tar.gz linux-dcd3e1de9d17dc43dfed87a9fc814b9dec508043.zip | |
s390/checksum: provide csum_partial_copy_nocheck()
With csum_partial(), which reads all bytes into registers it is easy to
also implement csum_partial_copy_nocheck() which copies the buffer while
calculating its checksum.
For a 512 byte buffer this reduces the runtime by 19%. Compared to the old
generic variant (memcpy() + cksm instruction) runtime is reduced by 42%).
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'tools/perf/scripts/python/event_analyzing_sample.py')
0 files changed, 0 insertions, 0 deletions