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Shutemov" , Douglas Anderson References: <20260730-qcom-wdt-nmi-series-v1-0-3aa86d162914@google.com> <20260730-qcom-wdt-nmi-series-v1-3-3aa86d162914@google.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260730-qcom-wdt-nmi-series-v1-3-3aa86d162914@google.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: Mrm4gdpz8l1O-HgzGeqcRyPzvYg5kqg0 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzMxMDA5MSBTYWx0ZWRfX8IG1D7F9xWf5 P+3Ij8VJIyDGaLJrMhBsltMYAMPhrAMeRmSxai3AwFICyuFhBjPU43IvLsmxOHl+ycQdC8pg1Yz QcOEAeLKHWvYuxkBcjLK5Wx5q50AGd7IgUfrrHys24r2WnIswQIZQeHa+evpxgzllfAi/BTRZPj jLYRD8MsORyBrGf1cGN34IDQ9jBrywgsS0YcOp5QppI7jx7JmefHqASRdit24zwUU8gr28ZmnX7 8hwRcUvVMtxRGNGr/UMsaIm0a+9mycBC2BSsQttHukrZe7XBgjeXoJZhSQVU1IUsxSBA9dlQIXi OBm+y3L1J/guMgmxDcYs9/5WY2wwlI4u+AoM+MEuBUexc7G5ZGbrMfJNg74+qf8y6tANW4u4hQu OzDemkNnYU9uoC1w3en4HQ2CMNnJnPCUYNneXfcc7iFQreKlj34tn6NPCk0W5vluSz8h7xCzU5L v5pDlmNrLygnB4pPwvg== X-Proofpoint-GUID: Mrm4gdpz8l1O-HgzGeqcRyPzvYg5kqg0 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzMxMDA5MSBTYWx0ZWRfX57arO3TWptV2 fCeJtcRl0Wb47Ia3vJn202OLZV7ge6aUnIxbkHGmWteWlP/JTm094Rjz1YXyYKBDTP+qyrhwqb4 V6AwEv5NvuIP9gnqcdKQUfdOrQfeVQg= X-Authority-Analysis: v=2.4 cv=b+uCJNGx c=1 sm=1 tr=0 ts=6a6c8d73 cx=c_pps a=mPf7EqFMSY9/WdsSgAYMbA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=1XWaLZrsAAAA:8 a=knYzKYFgTjH3_HfYCsAA:9 a=QEXdDO2ut3YA:10 a=dawVfQjAaf238kedN5IG:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-31_04,2026-07-30_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 bulkscore=0 adultscore=0 priorityscore=1501 impostorscore=0 lowpriorityscore=0 malwarescore=0 phishscore=0 clxscore=1011 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607310091 On 7/30/26 11:32 PM, Mayank Rungta via B4 Relay wrote: > From: Mayank Rungta > > When a system is completely unresponsive due to an interrupt storm or > deadlocked CPU cores with standard interrupts disabled, a standard watchdog > pretimeout bark interrupt will fail to execute, preventing the pretimeout > governor from capturing CPU backtraces before the hardware reset bite. [...] > drivers/watchdog/qcom-wdt.c | 55 +++++++++++++++++++++++++++++++++++++++++---- > 1 file changed, 51 insertions(+), 4 deletions(-) > > diff --git a/drivers/watchdog/qcom-wdt.c b/drivers/watchdog/qcom-wdt.c > index 49bd04841f0c..19d8e91cff40 100644 > --- a/drivers/watchdog/qcom-wdt.c > +++ b/drivers/watchdog/qcom-wdt.c > @@ -51,6 +51,9 @@ struct qcom_wdt { > unsigned long rate; > void __iomem *base; > const u32 *layout; > + int irq; > + bool is_nmi; > + bool irq_enabled; Do we need to track this? I think we can rely on the framework NOPing out multiple ops->start requests Konrad