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[211.23.53.87]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b5fa9ff713sm173734745ad.5.2026.04.22.11.12.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Apr 2026 11:12:59 -0700 (PDT) From: Yu-Hsiang Tseng To: Sebastian Andrzej Siewior Cc: Jeff Johnson , ath12k@lists.infradead.org, Baochen Qiang , Rameshkumar Sundaram , Kalle Valo , Clark Williams , Steven Rostedt , linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev Subject: Re: [PATCH v2] wifi: ath12k: fix false positive RCU warnings on PREEMPT_RT Date: Thu, 23 Apr 2026 02:12:46 +0800 Message-ID: <20260422181246.1944073-1-asas1asas200@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260422142325.Glnd_2Zc@linutronix.de> References: <20260422142325.Glnd_2Zc@linutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Wed, Apr 22, 2026 at 04:23:25PM +0200, Sebastian Andrzej Siewior wrote: > As elaborated above, this is not PREEMPT_RT specific but preemptible > TREE RCU. You're right. Sent v3 that clarifies the scope (preemptible RCU in general, not only PREEMPT_RT). > If both this then use this then I guess something like > lockdep_assert_in_rcu_read_lock() > is what you look for. Adopted in v3 - thanks for the pointer, it reads much cleaner than RCU_LOCKDEP_WARN(). v3: https://lore.kernel.org/ath12k/20260422180814.1938317-1-asas1asas200@gmail.com/ Thanks, Yu-Hsiang