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[213.77.89.56]) by smtp.gmail.com with ESMTPSA id o27-20020a056512051b00b0051179ae1846sm365561lfb.280.2024.02.10.15.51.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 10 Feb 2024 15:51:12 -0800 (PST) From: =?utf-8?q?=C5=81ukasz_Bartosik?= To: Jason Baron , Jim Cromie , Greg Kroah-Hartman , Andrew Morton , Kees Cook , Douglas Anderson Cc: Guenter Roeck , Yaniv Tzoreff , Benson Leung , Steven Rostedt , Vincent Whitchurch , Pekka Paalanen , Sean Paul , Daniel Vetter , Simon Ser , John Ogness , Petr Mladek , Sergey Senozhatsky , linux-kernel@vger.kernel.org, upstream@semihalf.com Subject: [PATCH v4 26/39] dyndbg: warn if no flags are given Date: Sun, 11 Feb 2024 00:49:56 +0100 Message-ID: <20240210235009.2405808-27-ukaszb@chromium.org> X-Mailer: git-send-email 2.43.0.687.g38aa6559b0-goog In-Reply-To: <20240210235009.2405808-1-ukaszb@chromium.org> References: <20240210235009.2405808-1-ukaszb@chromium.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1790558847973182441 X-GMAIL-MSGID: 1790558847973182441 From: Jim Cromie Since [1,2], ``cat control`` has displayed callsites without flags as ``=_``, to positively assert that no flags are set. It also took that as input, and the docs also tried to encourage its use, allowing users to expressly assert that all flags are unset by this operation: alias ddcmd='echo $* > /proc/dynamic_debug/control' ddcmd =_ # assert no-flags ddcmd = # allowed, grandfathered Now, warn on the latter. This allows to disambiguate the meaning of the :