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Mon, 3 Aug 2026 17:21:44 +0000 (GMT) From: Heiko Carstens To: Alexander Gordeev , Sven Schnelle , Vasily Gorbik , Christian Borntraeger , Claudio Imbrenda Cc: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/4] s390/sysinfo: Add context analysis attributes Date: Mon, 3 Aug 2026 19:21:41 +0200 Message-ID: <20260803172144.827049-2-hca@linux.ibm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260803172144.827049-1-hca@linux.ibm.com> References: <20260803172144.827049-1-hca@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODAzMDE1NCBTYWx0ZWRfX2O5UrfUdlYH+ IhAYqvpCBoRmKpR3Vrsjxaw63UwtwF4ArdXcloczkmYYFUnEuo2hs1HD748fbI3KwWJzYivV4AC MzCmuQuoDclGYBJYrWa/dhtDnqSCCtpcGD+ruZ4x7zUlMgUMKGvcZkt16rNXhxebSKUcKdEPBRc u50Sm0djLqGQMq4yGpE5fjBChOTdeKbLliobkX9EFpVBE06WmjO4QFKrgD6xxeAA+c8DW/+O/st 3CTLgDttQoCRJVqjTZr5iwJMS+xBmDQjkmwzuU1bDYwpNv2aMqnxa5JD6DuWbb63JGn8gVsCX/f bFaFnOSj+eMrCP6MwIVz5EmyGOd64bEhoQgi0uuk6DX/pyDMz2julxECGt0lBJr1ZuRnsgfhCgB bWp3m2vOpqs4LAR2idQhtfJ1tExxGQa0Q0WwBC/pGtGNLpNtik2zEqkgXMqzZ0iuf3Wqtt3BUM7 4hNK7R3lsjDl3uk8vWg== X-Authority-Analysis: v=2.4 cv=WIFPmHsR c=1 sm=1 tr=0 ts=6a70ce2d cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h:22 a=VnNF1IyMAAAA:8 a=SERiLF2h6cxcJWe3OlUA:9 X-Proofpoint-GUID: I_SpVHyYYiksD-Cauiw2o3X_bTF8DTIn X-Proofpoint-ORIG-GUID: I_SpVHyYYiksD-Cauiw2o3X_bTF8DTIn X-Proofpoint-Spam-Info: AW1haW4tMjYwODAzMDE1NCBTYWx0ZWRfX2y87MiwftaU3 uhkdZhu/W/iEjLDQgNnFl5LtH3Wi/JaL9KBilR+/Tc9QfjnjlCyNmN12Ls44XxVwYNa4ZkfmS3F Z19WKmIa011Cqgj+aAo9qWE8sSXLHjg= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-03_04,2026-08-03_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 lowpriorityscore=0 priorityscore=1501 phishscore=0 malwarescore=0 suspectscore=0 clxscore=1015 impostorscore=0 bulkscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608030154 Add context analysis attributes to service_level_start() and service_level_stop() to specify that those functions only acquire or release a lock. Addresses the following warnings: arch/s390/kernel/sysinfo.c:331:1: warning: rw_semaphore 'service_level_sem' is still held at the end of function arch/s390/kernel/sysinfo.c:329:2: note: rw_semaphore acquired here 329 | down_read(&service_level_sem); arch/s390/kernel/sysinfo.c:340:2: warning: releasing rw_semaphore 'service_level_sem' that was not held 340 | up_read(&service_level_sem); Signed-off-by: Heiko Carstens --- arch/s390/kernel/sysinfo.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/s390/kernel/sysinfo.c b/arch/s390/kernel/sysinfo.c index 33ca3e47a0e6..45b4f448fe3d 100644 --- a/arch/s390/kernel/sysinfo.c +++ b/arch/s390/kernel/sysinfo.c @@ -325,6 +325,7 @@ int unregister_service_level(struct service_level *slr) EXPORT_SYMBOL(unregister_service_level); static void *service_level_start(struct seq_file *m, loff_t *pos) +__acquires_shared(service_level_sem) { down_read(&service_level_sem); return seq_list_start(&service_level_list, *pos); @@ -336,6 +337,7 @@ static void *service_level_next(struct seq_file *m, void *p, loff_t *pos) } static void service_level_stop(struct seq_file *m, void *p) +__releases_shared(service_level_sem) { up_read(&service_level_sem); } -- 2.53.0