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Wed, 25 Feb 2026 09:19:23 +0000 (GMT) From: Sven Schnelle To: Heiko Carstens Cc: Frederic Weisbecker , Alexander Gordeev , Vasily Gorbik , Christian Borntraeger , linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Subject: Re: [PATCH 0/9] s390/idle/vtime: Minor fixes and cleanups In-Reply-To: <20260218142012.863464-1-hca@linux.ibm.com> (Heiko Carstens's message of "Wed, 18 Feb 2026 15:20:03 +0100") References: <20260218142012.863464-1-hca@linux.ibm.com> Date: Wed, 25 Feb 2026 10:19:23 +0100 Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: f8JWUVl4r8QUynhte05SsHUBTD95EkUQ X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjI1MDA4OSBTYWx0ZWRfXwNW43bgskPNf bZt/VIDxVJwD7KyTTzQLVLu2zXrIRBUL3d89K7ArrzfIJZPoLrQo37wcOX2d1LAjxk/qOUwSvZR V1ySlYGhVI9s0EsKVpJ7nNsB87mfwx0SkN4ONERKZE6VeisZoVgdemZHSX5GPmI0MHB78Bjh67S Yi3cljkMxdRxUUoHWxEF4W7sFelWvGsIEYqnqTF2tqLrRXiSk5hqepS6zqR+dq7tmyTmGN+9mJV RjA3pVQnELnglSslN0e4LNFafbi814s/gh46NczWUBy0cP6BHt3s2tQFoopGngoNU1uiVxbN7us z8QyB6p5uDKxGeuheIjA9gsFFwoZdVuNeAgepPYCO6RdDRpUQuXxYF+oM62Iuj3n/Bo8w6ODw17 rpmFr0GrcpUecjrgIrkzFMK5NRcoLZmMJtZ0GVh19OqkK+jqLa5SPx/ZQPg/fweRhYjrzuSLVZ4 vZabpmiyLXBTduuHcaw== X-Proofpoint-GUID: f8JWUVl4r8QUynhte05SsHUBTD95EkUQ X-Authority-Analysis: v=2.4 cv=bbBmkePB c=1 sm=1 tr=0 ts=699ebea0 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=HzLeVaNsDn8A:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=VnNF1IyMAAAA:8 a=JTawB1T5yoWm6DnOLoUA:9 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=2026-02-24_03,2026-02-23_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 bulkscore=0 adultscore=0 impostorscore=0 lowpriorityscore=0 priorityscore=1501 suspectscore=0 clxscore=1011 phishscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602250089 Heiko Carstens writes: > 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 For the series: Reviewed-by: Sven Schnelle