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Wed, 18 Feb 2026 14:20:13 +0000 (GMT) From: Heiko Carstens To: Frederic Weisbecker , Alexander Gordeev , Sven Schnelle , Vasily Gorbik , Christian Borntraeger Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Subject: [PATCH 0/9] s390/idle/vtime: Minor fixes and cleanups Date: Wed, 18 Feb 2026 15:20:03 +0100 Message-ID: <20260218142012.863464-1-hca@linux.ibm.com> X-Mailer: git-send-email 2.51.0 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-Authority-Analysis: v=2.4 cv=E+/AZKdl c=1 sm=1 tr=0 ts=6995caa2 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=HzLeVaNsDn8A:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=zUv34SalRBigAxX05AgA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjE4MDEyMCBTYWx0ZWRfXx9RkSAigiprt N+HjkQliu49HMvfPL8Zwq3XBv8yeziLfKONiuDS6lRuUzsBXDSHYRa4I+4roFWwXp4BnO8xe1hZ X0PX33Sv+iKAQbkosUxGyxW2Ku4IlAkZPc0bHGZMbm70G+jLh+IvuOpBTp6dck56+BEI8Ut5nD0 AYl4V7iGfUNaWSI3tunK2cd2PoWkUPCTR0r+0FuVjJjOAfAUDRpOcE5SZQVBT4eSUdU3sO074+a yVjhv0ygBvC6OKK5zDOtTBdW902dse6KWr1fd3dr6KhbvR+NOwzbQKOQZntjnD7q7O5SidK7lSQ gRddV37LZK4pJYOxjfdDsAqw1HDl2+QqXNQ0s1TwyQIEVFY1ttcfITXz4nXHut9bndPs+QnTWbY 7zEqxPi//9MVYQ6kkRqsuhP7FyBASTUDKo7PTW4H2JF/HYxoN34/ZkjUspisa/4rjASQiTUPRl+ AN7fV+kerCXwdj3S/3g== X-Proofpoint-ORIG-GUID: -mlACNNxRXfOMG_ntvvjxnaeMwyPYWMJ X-Proofpoint-GUID: -mlACNNxRXfOMG_ntvvjxnaeMwyPYWMJ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-18_02,2026-02-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 priorityscore=1501 malwarescore=0 phishscore=0 bulkscore=0 suspectscore=0 spamscore=0 clxscore=1015 impostorscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602180120 Frederic Weisbecker's cputime accounting patch series motivated me to finally have a deeper look at the s390 cputime accounting code. The result are two bug fixes, which are not at all critical, and a couple of cleanups and improvements. Heiko Carstens (9): s390/idle: Fix cpu idle exit cpu time accounting s390/vtime: Fix virtual timer forwarding s390/idle: Add comment for non obvious code s390/idle: Slightly optimize idle time accounting s390/idle: Inline update_timer_idle() s390/irq/idle: Remove psw bits early s390/vtime: Use __this_cpu_read() / get rid of READ_ONCE() s390/vtime: Use lockdep_assert_irqs_disabled() instead of BUG_ON() s390/idle: Remove psw_idle() prototype arch/s390/include/asm/idle.h | 4 ++-- arch/s390/include/asm/vtime.h | 34 ++++++++++++++++++++++++++++ arch/s390/kernel/entry.h | 2 -- arch/s390/kernel/idle.c | 25 +++++---------------- arch/s390/kernel/irq.c | 20 ++++++++++------- arch/s390/kernel/vtime.c | 42 +++++++++-------------------------- 6 files changed, 63 insertions(+), 64 deletions(-) base-commit: 9702969978695d9a699a1f34771580cdbb153b33 -- 2.51.0