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Thu, 5 Nov 2026 17:38:23 +0000 (GMT) Received: from [9.68.10.150] (unknown [9.68.10.150]) by smtpav04.dal12v.mail.ibm.com (Postfix) with ESMTP; Thu, 5 Nov 2026 17:38:23 +0000 (GMT) Message-ID: <0bfde967-9b68-4edb-96d7-ee9580fa1358@linux.ibm.com> Date: Thu, 5 Nov 2026 18:38:10 +0100 X-Mailing-List: llvm@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 01/20] coverage: move gcov and kcov under kernel/coverage/ To: Sasha Levin , linux-kernel@vger.kernel.org Cc: Alexander Potapenko , Andrew Morton , Andrey Konovalov , Ben Segall , Bill Wendling , Chuck Wolber , Dietmar Eggemann , Dmitry Vyukov , Ingo Molnar , Juri Lelli , Justin Stitt , kasan-dev@googlegroups.com, K Prateek Nayak , linux-doc@vger.kernel.org, llvm@lists.linux.dev, Marco Elver , Masami Hiramatsu , Mauro Carvalho Chehab , Mel Gorman , Nathan Chancellor , Nick Desaulniers , Peter Zijlstra , Steven Rostedt , Thomas Gleixner , Valentin Schneider , Vincent Guittot References: <20261103015238.3780910-1-sashal@kernel.org> <20261103015238.3780910-2-sashal@kernel.org> From: Peter Oberparleiter Content-Language: en-US In-Reply-To: <20261103015238.3780910-2-sashal@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-ORIG-GUID: rkdU5601SIlyTEcZImOEhpH2nM8SvIsv X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTA1MDA2OCBTYWx0ZWRfX6NJgN8/MJS35 pbK2PumL8jSiuQmWVCw5maGSbcS30Ek2XXkqSVWxt5CiIze/p2m8RSuSfrT1TocToRxb2dOkIWs CnlZzrH2Pzk62SVShoGHP7rYRw75T7L047aSenT+9ZCUBADK9xweoRN8gD5ligVMTacUUJykEor pEBu3irqghJrnWuCwO4aRVyVm7ufppv0WvZQ93q11ReemzEk4kVp2F7Ih54k6fv5uWU7UKMVq6t EIHEDBHyVEaQL3wQVbyF6J3tK7durH77k8zA8x3bq5OMK0CGPJ2LfjCvKtA4z7oeTF9vfLFTXCJ 95X3CcsvMvpMV6h/HZpUhqgCrISkahyAQkNXaEUV4vlOm0IF7CvPf9r3KRP4r8noW2GrN7un6eC gJVmiBHO3EmYhBYNhIHbqMWp1XoCGITD+pLuMa8m04DS9wzkwi8D9jat2fKMl5/g8OS2qi/7xwh nOE6C2meI2UzXHrJGRA== X-Proofpoint-Spam-Info: AW1haW4tMjYxMTA1MDA2OCBTYWx0ZWRfX4pCvlQhJn+tP fedwpzoYFglsAh62fLOLIf8wKvMnTmjUJpkkGVc8oXHoANVNG/zcdndiG0cLEI66MaCxoxvbBU6 4BSo6rbWEWa0bgu/4qqs1prGmifX1LM= X-Proofpoint-GUID: V_V2ysk_22Dp2O_arpjz6QdKTGBpjRLM X-Authority-Analysis: v=2.4 cv=EsJHPicA c=1 sm=1 tr=0 ts=6aecbf15 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=IkcTkHD0fZMA:10 a=zJRp6_cAMcgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=uAUjUfugXiV6-CzwXu8A:9 a=QEXdDO2ut3YA:10 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-11-05_04,2026-11-04_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 clxscore=1011 lowpriorityscore=0 malwarescore=0 priorityscore=1501 adultscore=0 impostorscore=0 phishscore=0 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610300000 definitions=main-2611050068 On 03.11.2026 02:52, Sasha Levin wrote: > The kernel carries more than one code coverage implementation, each > with its own directory, Kconfig menu, build plumbing and debugfs > interface. Start consolidating them by moving the existing > implementations next to each other: > > kernel/gcov/ -> kernel/coverage/gcov/ > kernel/kcov.c -> kernel/coverage/kcov.c > > Both are configured from a new "Code coverage" menu in > kernel/coverage/Kconfig, which is sourced from "Kernel Testing and > Coverage" where the KCOV options used to live. The gcov options move > there from "General architecture-dependent options". > > No functional change: the Kconfig symbols and their dependencies are > unchanged, and so are the per-object compiler flags of kcov.o, which > move to kernel/coverage/Makefile. > > Signed-off-by: Sasha Levin For the gcov portion: Reviewed-by: Peter Oberparleiter -- Peter Oberparleiter Linux on IBM Z Development - IBM Germany R&D