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Tue, 2 Jun 2020 04:31:41 +0000 (GMT) Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 14077AC064; Tue, 2 Jun 2020 04:31:41 +0000 (GMT) Received: from localhost (unknown [9.160.98.233]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTP; Tue, 2 Jun 2020 04:31:40 +0000 (GMT) From: Nathan Lynch To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH 0/2] pseries extended cede cpu offline mode removal Date: Mon, 1 Jun 2020 23:31:38 -0500 Message-Id: <20200602043140.397746-1-nathanl@linux.ibm.com> X-Mailer: git-send-email 2.25.4 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216, 18.0.687 definitions=2020-06-02_04:2020-06-01, 2020-06-02 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 impostorscore=0 mlxlogscore=770 cotscore=-2147483648 mlxscore=0 adultscore=0 spamscore=0 lowpriorityscore=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2006020020 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: svaidy@linux.vnet.ibm.com, npiggin@gmail.com, ego@linux.vnet.ibm.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" I propose removing the "extended cede" offline mode for CPUs as well as the partition suspend code which accommodates it by temporarily onlining all CPUs prior to suspending the LPAR. Detailed justifications are within the individual commit messages. I'm hoping to move the pseries partition suspend implementation to the Linux suspend framework, and I expect that having only one offline mode for CPUs will make that task quite a bit less complex. Nathan Lynch (2): powerpc/pseries: remove cede offline state for CPUs powerpc/rtas: don't online CPUs for partition suspend Documentation/core-api/cpu_hotplug.rst | 7 - arch/powerpc/include/asm/rtas.h | 2 - arch/powerpc/kernel/rtas.c | 122 +------------ arch/powerpc/platforms/pseries/hotplug-cpu.c | 170 ++---------------- .../platforms/pseries/offline_states.h | 38 ---- arch/powerpc/platforms/pseries/pmem.c | 1 - arch/powerpc/platforms/pseries/smp.c | 28 +-- arch/powerpc/platforms/pseries/suspend.c | 22 +-- 8 files changed, 18 insertions(+), 372 deletions(-) delete mode 100644 arch/powerpc/platforms/pseries/offline_states.h -- 2.25.4