diff options
| author | Paolo Abeni <[email protected]> | 2023-10-23 13:44:39 -0700 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2023-10-25 12:23:34 -0700 |
| commit | 0ffe8e74904027aa48d1f8bd52675c6f0a4c88d1 (patch) | |
| tree | 857be96578abfabad1f36ac8212c056f6534829b /tools/perf/scripts/python/syscall-counts-by-pid.py | |
| parent | 5684ab1a0effbfeb706f47d85785f653005b97b1 (diff) | |
mptcp: use copy_from_iter helpers on transmit
The perf traces show an high cost for the MPTCP transmit path memcpy.
It turn out that the helper currently in use carries quite a bit
of unneeded overhead, e.g. to map/unmap the memory pages.
Moving to the 'copy_from_iter' variant removes such overhead and
additionally gains the no-cache support.
Reviewed-by: Mat Martineau <[email protected]>
Signed-off-by: Paolo Abeni <[email protected]>
Signed-off-by: Mat Martineau <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts-by-pid.py')
0 files changed, 0 insertions, 0 deletions