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Mon, 25 Jul 2022 12:25:08 +0000 (GMT) Received: from [9.101.4.33] (unknown [9.101.4.33]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 25 Jul 2022 12:25:07 +0000 (GMT) Message-ID: <4e366d73-fb9f-bd83-abd0-c624a737a0cd@linux.ibm.com> Date: Mon, 25 Jul 2022 14:25:07 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:102.0) Gecko/20100101 Thunderbird/102.0.3 Subject: Re: [PATCH v5 4/4] pseries/mobility: set NMI watchdog factor during an LPM To: Randy Dunlap , mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, wim@linux-watchdog.org, linux@roeck-us.net, nathanl@linux.ibm.com Cc: haren@linux.vnet.ibm.com, hch@infradead.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-watchdog@vger.kernel.org References: <20220713154729.80789-1-ldufour@linux.ibm.com> <20220713154729.80789-5-ldufour@linux.ibm.com> Content-Language: fr From: Laurent Dufour In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: oaoX5aaD2obYHUM1BDYUNJcpyVzDgQkz X-Proofpoint-GUID: 1K3Wa8DBSonxvU57zc15TRRFAuGltn2H X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-07-25_09,2022-07-25_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 mlxscore=0 phishscore=0 bulkscore=0 suspectscore=0 adultscore=0 spamscore=0 malwarescore=0 priorityscore=1501 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2206140000 definitions=main-2207250051 Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org Le 13/07/2022 à 22:17, Randy Dunlap a écrit : > Hi Laurent, > > On 7/13/22 08:47, Laurent Dufour wrote: >> diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst >> index ddccd1077462..d73faa619c15 100644 >> --- a/Documentation/admin-guide/sysctl/kernel.rst >> +++ b/Documentation/admin-guide/sysctl/kernel.rst >> @@ -592,6 +592,18 @@ to the guest kernel command line (see >> Documentation/admin-guide/kernel-parameters.rst). >> >> >> +nmi_wd_lpm_factor (PPC only) >> +============================ >> + >> +Factor apply to the NMI watchdog timeout (only when ``nmi_watchdog`` is > > Factor to apply to Thanks, Randy. Michael, could you fix that when applying the series? Cheers, Laurent > >> +set to 1). This factor represents the percentage added to >> +``watchdog_thresh`` when calculating the NMI watchdog timeout during an >> +LPM. The soft lockup timeout is not impacted. >> + >> +A value of 0 means no change. The default value is 200 meaning the NMI >> +watchdog is set to 30s (based on ``watchdog_thresh`` equal to 10). >