Re: [PATCH v4] devtools: replace checkpatches shell wrapper with Python script

Bruce Richardson
2026-02-04T17:32:42Z

On Wed, Feb 04, 2026 at 08:59:17AM -0800, Stephen Hemminger wrote:
> Alternative to the checkpatches.sh shell script that wraps the Linux kernel's
> checkpatch.pl with a standalone Python implementation. The new
> dpdk-checkpatch.py script provides equivalent functionality without
> requiring the kernel source tree or Perl.
>
> Performance is significantly improved: checking a recent flow parser
> patch series dropped from 2m23s to 0.43s (approximately 300x faster).
>
Yep, it is definitely a LOT faster. Running on top 10 commits on main tree
with old and new script:

$ time ./devtools/checkpatches.sh -n10

10/10 valid patches

real 0m32.570s
user 0m30.517s
sys 0m2.256s

$ time ./devtools/dpdk-checkpatch.py -n10

10/10 valid patches

real 0m0.255s
user 0m0.214s
sys 0m0.040s

32.5 seconds down to a quarter of a second is a massive gain. Looking
forward to switching script for checking patches in future!

/Bruce