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[73.78.62.130]) by smtp.googlemail.com with ESMTPSA id e12-20020a056602044c00b006889ea7be7bsm3727688iov.29.2022.09.04.14.42.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 04 Sep 2022 14:42:47 -0700 (PDT) From: Jim Cromie To: jbaron@akamai.com, gregkh@linuxfoundation.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: daniel.vetter@ffwll.ch, seanpaul@chromium.org, robdclark@gmail.com, linux@rasmusvillemoes.dk, joe@perches.com, Jim Cromie Subject: [PATCH v6 39/57] dyndbg/drm: POC add tracebits sysfs-knob Date: Sun, 4 Sep 2022 15:41:16 -0600 Message-Id: <20220904214134.408619-40-jim.cromie@gmail.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220904214134.408619-1-jim.cromie@gmail.com> References: <20220904214134.408619-1-jim.cromie@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" clone DRM.debug interface to DRM.tracebits: ie map bits to drm-debug-categories, except this interface enables messages to tracefs, not to syslog. 1- we reuse the class-map added previously. this reflects the single source of both syslog/trace events 2- add a 2nd struct ddebug_classes_bitmap_param refs 1, reusing it. flags =3D "T", to enable trace-events on this callsite. 3- module_param_cb([2]) - does the sysfs part Signed-off-by: Jim Cromie Reviewed-by: Daniel Vetter --- drivers/gpu/drm/drm_print.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c index c50edbf443d3..75d0cecd7e86 100644 --- a/drivers/gpu/drm/drm_print.c +++ b/drivers/gpu/drm/drm_print.c @@ -45,6 +45,9 @@ unsigned long __drm_debug; EXPORT_SYMBOL(__drm_debug); =20 +unsigned long __drm_trace; +EXPORT_SYMBOL(__drm_trace); + MODULE_PARM_DESC(debug, "Enable debug output, where each bit enables a deb= ug category.\n" "\t\tBit 0 (0x01) will enable CORE messages (drm core code)\n" "\t\tBit 1 (0x02) will enable DRIVER messages (drm controller code)\n" @@ -77,6 +80,13 @@ static struct ddebug_class_param drm_debug_bitmap =3D { .map =3D &drm_debug_classes, }; module_param_cb(debug, ¶m_ops_dyndbg_classes, &drm_debug_bitmap, 0600); + +static struct ddebug_class_param drm_trace_bitmap =3D { + .bits =3D &__drm_trace, + .flags =3D "T", + .map =3D &drm_debug_classes, +}; +module_param_cb(tracecats, ¶m_ops_dyndbg_classes, &drm_trace_bitmap, 0= 600); #endif =20 void __drm_puts_coredump(struct drm_printer *p, const char *str) --=20 2.37.2