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Fri, 20 Mar 2026 17:35:16 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ThreadId: AdhqlxVOGV4g Date: Fri, 20 Mar 2026 22:34:55 +0100 From: "Arnd Bergmann" To: "Nathan Chancellor" , "Marc Zyngier" , "Vincent Donnefort" Cc: "Steven Rostedt" , "Masami Hiramatsu" , "Mathieu Desnoyers" , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, kvmarm@lists.linux.dev Message-Id: In-Reply-To: <20260320-cmd_check_undefined-verbose-v1-1-54fc5b061f94@kernel.org> References: <20260320-cmd_check_undefined-verbose-v1-1-54fc5b061f94@kernel.org> Subject: Re: [PATCH] tracing: Adjust cmd_check_undefined to show unexpected undefined symbols Content-Type: text/plain Content-Transfer-Encoding: 7bit On Fri, Mar 20, 2026, at 22:29, Nathan Chancellor wrote: > When the check_undefined command in kernel/trace/Makefile fails, there > is no output, making it hard to understand why the build failed. Capture > the output of the $(NM) + grep command and print it when failing to make > it clearer what the problem is. > > Fixes: a717943d8ecc ("tracing: Check for undefined symbols in > simple_ring_buffer") > Signed-off-by: Nathan Chancellor Acked-by: Arnd Bergmann This does seem very helpful, as I still expect this to come up regularly. Arnd