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[2a02:3100:a4f2:6901:14a0:23ad:a35e:aa8c]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49cee7fec25sm182752585e9.13.2026.09.04.09.45.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Sep 2026 09:45:18 -0700 (PDT) Date: Fri, 4 Sep 2026 18:45:16 +0200 From: Karl Mehltretter To: Frederic Weisbecker Cc: Peter Zijlstra , Thomas Gleixner , Sebastian Andrzej Siewior , Clark Williams , Steven Rostedt , Boqun Feng , Lyude Paul , Joel Fernandes , Alexander Potapenko , linux-kernel@vger.kernel.org, linux-rt-devel@lists.linux.dev Subject: Re: [PATCH] softirq: Preserve interrupt context during IRQ exit Message-ID: References: <20260903112737.49551-1-kmehltretter@gmail.com> Precedence: bulk X-Mailing-List: linux-rt-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Thu, Sep 03, 2026 at 05:22:21PM +0100, Frederic Weisbecker wrote: > > + if (softirq_count() == SOFTIRQ_OFFSET) > > Any other value should be forbidden here. > It should just warn. > > + > > + if (softirq_count() == SOFTIRQ_OFFSET) > > + lockdep_softirqs_on(_RET_IP_); > > Same here, you should warn if softirq_count() != SOFTIRQ_OFFSET > Good point! I'll send a v2. Thanks, Karl