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Message-ID: <20250728160647.6d0bb258@kernel.org> Date: Mon, 28 Jul 2025 16:06:47 -0700 From: Jakub Kicinski <kuba@...nel.org> To: netdev@...r.kernel.org, netdev-driver-reviewers@...r.kernel.org Subject: [ANN] netdev development stats for 6.17 Intro ----- As is tradition here are the development statistics based on mailing list traffic on netdev@...r. These stats are somewhat like LWN stats: https://lwn.net/Articles/1004998/ but more focused on mailing list participation. And by participation we mean reviewing code more than producing patches. In particular "review score" tries to capture the balance between reviewing other people's code vs posting patches. It's roughly number of patches reviewed minus number of patches posted. Those who post more than they review will have a negative score. Previous 3 reports: - for 6.14: https://lore.kernel.org/20250121200710.19126f7d@kernel.org - for 6.15: https://lore.kernel.org/20250326140948.18a7da36@kernel.org - for 6.16: https://lore.kernel.org/20250529144354.4ca86c77@kernel.org General stats ------------- 6.17 was similar size to 6.15 for us: -1% messages / day, +3% commits / day. 6.16 was smaller for some reason, hence using 6.15 for comparison. The review coverage slipped slightly (-1.4%), which may be due to people taking summer vacations. The percentage of commits with selftests remained the same as in 6.16 at 8%. Testing ------- The number of tests is slowly creeping up. Recent test additions (netconsole and tc flower) helped up catch some longstanding issues. The main change on the test infra side was the addition of pylint, yamllint and shellcheck to the checkers we run. Contributions to selftests: 1 [ 23] Jakub Kicinski 2 [ 8] Breno Leitao 3 [ 7] Eric Dumazet 4 [ 6] Mohsin Bashir 5 [ 5] Petr Machata 6 [ 4] Hangbin Liu 7 [ 4] Mina Almasry 8 [ 3] Daniel Zahka 9 [ 3] Gal Pressman 10 [ 3] Samiullah Khawaja Developer rankings ------------------ Top reviewers (cs): Top reviewers (msg): 1 ( ) [36] Jakub Kicinski 1 ( ) [73] Jakub Kicinski 2 ( ) [34] Simon Horman 2 ( ) [69] Simon Horman 3 ( ) [14] Andrew Lunn 3 ( ) [39] Andrew Lunn 4 ( ) [11] Paolo Abeni 4 ( ) [21] Paolo Abeni 5 ( +7) [ 7] Eric Dumazet 5 (+14) [16] Eric Dumazet 6 ( ) [ 5] Kuniyuki Iwashima 6 ( +3) [15] Willem de Bruijn 7 ( ) [ 4] Stanislav Fomichev 7 ( +5) [14] Krzysztof Kozlowski 8 ( +1) [ 4] Willem de Bruijn 8 ( -2) [12] Kuniyuki Iwashima 9 ( +6) [ 4] Rob Herring 9 ( -2) [12] Stanislav Fomichev 10 ( +3) [ 4] Krzysztof Kozlowski 10 ( +3) [11] Stefano Garzarella 11 ( -1) [ 4] Vadim Fedorenko 11 ( +4) [10] Vadim Fedorenko 12 ( -7) [ 4] Jacob Keller 12 ( -2) [10] Donald Hunter 13 ( -5) [ 3] Russell King 13 ( -5) [ 8] Russell King 14 ( +7) [ 3] Aleksandr Loktionov 14 ( -3) [ 8] Mina Almasry 15 (+15) [ 2] Cong Wang 15 ( +8) [ 8] Jason Wang The set of "top 15" reviewers was quite stable since 6.16, even tho there was a bit of a shuffle in the bottom half of positions. Krzysztof and Rob review device tree bindings, we wait for their acks for all DT patches, so either there was more active discussions or simply more DT patches in this release. Stefano maintains and reviews vsock code, Donal - YNL, and Mina participates in the zero-copy and page pool related discussions. Vadim and Jacob continue to focus on PTP and general driver reviews. Russell reviews mostly phylink, phy, and stmmac code on netdev. Aleksandr Loktionov reviews Intel patches on intel-wired (with netdev CCed, FWIW since these are Intel-to-Intel reviews they do not count to Intel's company score). Thanks to all the reviewers for your invaluable work! Top authors (cs): Top authors (msg): 1 ( ) [7] Jakub Kicinski 1 ( ) [33] Jakub Kicinski 2 (+18) [4] Eric Dumazet 2 ( +2) [25] Chia-Yu Chang 3 (***) [3] Kuniyuki Iwashima 3 (***) [20] Kuniyuki Iwashima 4 (***) [3] Yue Haibing 4 ( -1) [19] Tony Nguyen 5 (+37) [2] Alok Tiwari 5 (***) [16] Mauro Carvalho Chehab 6 ( +5) [2] Tariq Toukan 6 (+43) [16] Frank Wunderlich 7 (***) [2] Jason Xing 7 (+29) [16] Stephen Smalley 8 ( +6) [2] Oleksij Rempel 8 (+33) [16] Breno Leitao 9 (***) [2] Thomas Fourier 9 ( -4) [15] Byungchul Park 10 ( -5) [2] Heiner Kallweit 10 (***) [14] Mark Bloch 11 (+27) [2] Breno Leitao 11 (***) [14] Eric Dumazet 12 (-10) [2] Russell King 12 (+27) [14] Jijie Shao 13 (***) [1] Luka 13 (***) [13] Daniel Zahka 14 (+19) [1] Johannes Berg 14 (+19) [12] Marc Kleine-Budde 15 (***) [1] Arnd Bergmann 15 ( -4) [12] Ivan Vecera The person called "Luka" sent a bunch of syzbot reports for 6.12, which weren't particularly useful. Our methodology counts starting a thread as a "posting". I think that's fairly reasonable, whether it's a patch or a not-so-great report - someone has to spend time investigating it; so counting it as a net consumer of upstream attention seems fair. We do not know where that person works. Top scores (positive): Top scores (negative): 1 ( ) [529] Simon Horman 1 ( ) [99] Chia-Yu Chang 2 ( ) [461] Jakub Kicinski 2 (***) [66] Mauro Carvalho Chehab 3 ( ) [245] Andrew Lunn 3 (+18) [65] Stephen Smalley 4 ( ) [139] Paolo Abeni 4 (+28) [64] Frank Wunderlich 5 ( +1) [ 81] Willem de Bruijn 5 ( -1) [64] Tony Nguyen 6 ( +2) [ 76] Krzysztof Kozlowski 6 ( -4) [61] Byungchul Park 7 ( +2) [ 63] Vadim Fedorenko 7 (***) [54] Mark Bloch 8 ( +2) [ 62] Rob Herring 8 (***) [51] Daniel Zahka 9 ( +3) [ 54] Eric Dumazet 9 (+20) [50] Jijie Shao 10 ( +4) [ 45] Stefano Garzarella 10 ( -4) [48] Ivan Vecera Company rankings ---------------- Top reviewers (cs): Top reviewers (msg): 1 ( ) [48] RedHat 1 ( ) [130] RedHat 2 ( ) [39] Meta 2 ( ) [101] Meta 3 ( ) [22] Intel 3 ( +2) [ 53] Google 4 ( +1) [17] Google 4 ( -1) [ 48] Intel 5 ( -1) [14] Andrew Lunn 5 ( -1) [ 39] Andrew Lunn 6 ( +3) [ 7] Linaro 6 ( ) [ 20] nVidia 7 ( -1) [ 7] nVidia 7 ( +2) [ 18] Linaro Top authors (cs): Top authors (msg): 1 ( ) [13] Meta 1 ( +1) [98] Meta 2 ( +2) [12] Google 2 ( +2) [66] Google 3 ( -1) [10] RedHat 3 ( ) [56] RedHat 4 ( -1) [ 9] Intel 4 ( +2) [55] nVidia 5 ( ) [ 8] nVidia 5 (+14) [47] Huawei 6 ( +8) [ 6] Huawei 6 ( -5) [47] Intel 7 ( -1) [ 4] Oracle 7 ( +1) [25] Nokia Top scores (positive): Top scores (negative): 1 ( ) [648] RedHat 1 (+25) [165] Huawei 2 ( ) [312] Meta 2 ( ) [ 99] Nokia 3 ( ) [245] Andrew Lunn 3 (***) [ 94] nVidia 4 (+10) [166] Intel 4 (***) [ 65] NSA 5 ( -1) [ 97] Linaro 5 ( +3) [ 64] Pengutronix 6 ( ) [ 67] ARM 6 (***) [ 64] OMNINET 7 ( +1) [ 63] Google 7 ( -4) [ 61] SK Hynix Red Hat wins #1 as the net-reviewer, 3rd time in the row. Intel jumps to #4 with (slightly) higher review rate and (much) lower posting rate. I really need to come up with a systematic way of benefiting companies who contribute to upstream reviews.. On the negative side we have Huawei (largely due to the many re-postings for YNL-doc reformatting from Mauro). Chia-Yu Chang secures the negative #2 position for Nokia with AccECN. nVidia returns to negative #3, after going barely-positive in the previous cycle (due to lower posting rate). The NSA entry is from someone cross-posting a huge SELinux patch set to netdev. SK Hynix, I believe, is due to Byungchul Park's postings. -- Code: https://github.com/kuba-moo/ml-stat Raw output: https://netdev.bots.linux.dev/static/nipa/stats-6.17/stdout
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