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[67.165.245.5]) by smtp.googlemail.com with ESMTPSA id 8926c6da1cb9f-50a55df0940sm2268319173.106.2025.08.02.20.59.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 02 Aug 2025 20:59:18 -0700 (PDT) From: Jim Cromie To: linux-kernel@vger.kernel.org, jbaron@akamai.com, gregkh@linuxfoundation.org, ukaszb@chromium.org, louis.chauvet@bootlin.com Cc: dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, daniel.vetter@ffwll.ch, tvrtko.ursulin@linux.intel.com, jani.nikula@intel.com, ville.syrjala@linux.intel.com, seanpaul@chromium.org, robdclark@gmail.com, groeck@google.com, yanivt@google.com, bleung@google.com, quic_saipraka@quicinc.com, will@kernel.org, catalin.marinas@arm.com, quic_psodagud@quicinc.com, maz@kernel.org, arnd@arndb.de, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, mingo@redhat.com, jim.cromie@gmail.com Subject: [PATCH v4 30/58] dyndbg: reserve flag-bit _DPRINTK_FLAGS_PREFIX_CACHED Date: Sat, 2 Aug 2025 21:57:48 -0600 Message-ID: <20250803035816.603405-31-jim.cromie@gmail.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250803035816.603405-1-jim.cromie@gmail.com> References: <20250803035816.603405-1-jim.cromie@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Reserve a flag-bit to remember that a pr-debug callsite is/was: - enabled, with +p - wants a dynamic-prefix, with 1+ of module:function:sourcefile - was previously called - was thus saved in the prefix cache. NOT YET. This allows (later) to cache part/all of the dynamic-prefix for each pr_debug that gets called. The cache contents must avoid the Thread-id (its not callsite), and could avoid the line (to shrink the cache). But then line needs %d each time pr_debug is reached. ATM, this is just the flag-bit reservation. Signed-off-by: Jim Cromie --- include/linux/dynamic_debug.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index bc26bc9128c1c..0f7476456614e 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -38,6 +38,7 @@ struct _ddebug { #define _DPRINTK_FLAGS_INCL_LINENO (1<<3) #define _DPRINTK_FLAGS_INCL_TID (1<<4) #define _DPRINTK_FLAGS_INCL_SOURCENAME (1<<5) +#define _DPRINTK_FLAGS_PREFIX_CACHED (1<<7) =20 #define _DPRINTK_FLAGS_INCL_ANY \ (_DPRINTK_FLAGS_INCL_MODNAME | _DPRINTK_FLAGS_INCL_FUNCNAME |\ --=20 2.50.1