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[212.51.149.33]) by smtp.gmail.com with ESMTPSA id s25-20020a170906bc5900b007081282cbd8sm7824571ejv.76.2022.09.06.23.59.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Sep 2022 23:59:49 -0700 (PDT) Date: Wed, 7 Sep 2022 08:59:48 +0200 From: Daniel Vetter To: Jim Cromie Cc: 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, daniel.vetter@ffwll.ch, seanpaul@chromium.org, robdclark@gmail.com, linux@rasmusvillemoes.dk, joe@perches.com Subject: Re: [PATCH v6 39/57] dyndbg/drm: POC add tracebits sysfs-knob Message-ID: Mail-Followup-To: Jim Cromie , 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, seanpaul@chromium.org, robdclark@gmail.com, linux@rasmusvillemoes.dk, joe@perches.com References: <20220904214134.408619-1-jim.cromie@gmail.com> <20220904214134.408619-40-jim.cromie@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220904214134.408619-40-jim.cromie@gmail.com> X-Operating-System: Linux phenom 5.18.0-4-amd64 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Sep 04, 2022 at 03:41:16PM -0600, Jim Cromie wrote: > 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 = "T", to enable trace-events on this callsite. > > 3- module_param_cb([2]) - does the sysfs part > > Signed-off-by: Jim Cromie All the drm patches (excluding nouveau) I haven't commented on: Reviewed-by: Daniel Vetter I think nouveau I'll leave up to nouveau folks. -Daniel > --- > 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); > > +unsigned long __drm_trace; > +EXPORT_SYMBOL(__drm_trace); > + > MODULE_PARM_DESC(debug, "Enable debug output, where each bit enables a debug 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 = { > .map = &drm_debug_classes, > }; > module_param_cb(debug, ¶m_ops_dyndbg_classes, &drm_debug_bitmap, 0600); > + > +static struct ddebug_class_param drm_trace_bitmap = { > + .bits = &__drm_trace, > + .flags = "T", > + .map = &drm_debug_classes, > +}; > +module_param_cb(tracecats, ¶m_ops_dyndbg_classes, &drm_trace_bitmap, 0600); > #endif > > void __drm_puts_coredump(struct drm_printer *p, const char *str) > -- > 2.37.2 > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch