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Date: Fri, 13 Aug 2021 09:17:13 -0600
From: Jim Cromie <jim.cromie@...il.com>
To: gregkh@...uxfoundation.org, seanpaul@...omium.org,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Alex Deucher <alexander.deucher@....com>,
Christian König <christian.koenig@....com>,
"Pan, Xinhui" <Xinhui.Pan@....com>,
Harry Wentland <harry.wentland@....com>,
Leo Li <sunpeng.li@....com>,
Zhenyu Wang <zhenyuw@...ux.intel.com>,
Zhi Wang <zhi.a.wang@...el.com>,
Jani Nikula <jani.nikula@...ux.intel.com>,
Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
Rodrigo Vivi <rodrigo.vivi@...el.com>,
Jason Baron <jbaron@...mai.com>,
Hawking Zhang <Hawking.Zhang@....com>,
Tao Zhou <tao.zhou1@....com>, Huang Rui <ray.huang@....com>,
Le Ma <le.ma@....com>, Chengming Gui <Jack.Gui@....com>,
Likun Gao <Likun.Gao@....com>, Dennis Li <Dennis.Li@....com>,
Jim Cromie <jim.cromie@...il.com>,
John Clements <john.clements@....com>,
Kevin Wang <kevin1.wang@....com>,
Ashley Thomas <Ashley.Thomas2@....com>,
Aurabindo Pillai <aurabindo.pillai@....com>,
Qingqing Zhuo <qingqing.zhuo@....com>,
Wyatt Wood <Wyatt.Wood@....com>,
Johan Hovold <johan@...nel.org>, Jessica Yu <jeyu@...nel.org>,
Miguel Ojeda <ojeda@...nel.org>, Joe Perches <joe@...ches.com>,
Nick Desaulniers <ndesaulniers@...ogle.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Masahiro Yamada <masahiroy@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
"Paul E. McKenney" <paulmck@...nel.org>,
Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
Thomas Gleixner <tglx@...utronix.de>,
Vitor Massaru Iha <vitor@...saru.org>,
Sedat Dilek <sedat.dilek@...il.com>,
Changbin Du <changbin.du@...el.com>,
Marco Elver <elver@...gle.com>,
Andrey Konovalov <andreyknvl@...il.com>,
Alexander Potapenko <glider@...gle.com>,
Brendan Higgins <brendanhiggins@...gle.com>,
Oliver Glitta <glittao@...il.com>,
James Bottomley <James.Bottomley@...senPartnership.com>,
Arnd Bergmann <arnd@...db.de>,
Patricia Alfonso <trishalfonso@...gle.com>,
Arvind Sankar <nivedita@...m.mit.edu>,
Jiri Olsa <jolsa@...nel.org>,
Palmer Dabbelt <palmerdabbelt@...gle.com>,
linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
amd-gfx@...ts.freedesktop.org, intel-gvt-dev@...ts.freedesktop.org,
intel-gfx@...ts.freedesktop.org
Subject: [PATCH v5 5/9] i915/gvt: use DEFINE_DYNAMIC_DEBUG_CATEGORIES to create "gvt:core:" etc categories
The gvt component of this driver has ~120 pr_debugs, in 9 categories
quite similar to those in DRM. Following the interface model of
drm.debug, add a parameter to map bits to these categorizations.
DEFINE_DYNAMIC_DEBUG_CATEGORIES(debug_gvt, __gvt_debug,
"dyndbg bitmap desc",
{ "gvt:cmd: ", "command processing" },
{ "gvt:core: ", "core help" },
{ "gvt:dpy: ", "display help" },
{ "gvt:el: ", "help" },
{ "gvt:irq: ", "help" },
{ "gvt:mm: ", "help" },
{ "gvt:mmio: ", "help" },
{ "gvt:render: ", "help" },
{ "gvt:sched: " "help" });
The actual patch has a few details different, cmd_help() macro emits
the initialization construct.
if CONFIG_DRM_USE_DYNAMIC_DEBUG, then -DDYNAMIC_DEBUG_MODULE is added
cflags, by gvt/Makefile.
---
v4+:
. static decl of vector of bit->class descriptors - Emil.V
. relocate gvt-makefile chunk from elsewhere
Signed-off-by: Jim Cromie <jim.cromie@...il.com>
---
drivers/gpu/drm/i915/gvt/Makefile | 4 ++++
drivers/gpu/drm/i915/i915_params.c | 35 ++++++++++++++++++++++++++++++
2 files changed, 39 insertions(+)
diff --git a/drivers/gpu/drm/i915/gvt/Makefile b/drivers/gpu/drm/i915/gvt/Makefile
index ea8324abc784..846ba73b8de6 100644
--- a/drivers/gpu/drm/i915/gvt/Makefile
+++ b/drivers/gpu/drm/i915/gvt/Makefile
@@ -7,3 +7,7 @@ GVT_SOURCE := gvt.o aperture_gm.o handlers.o vgpu.o trace_points.o firmware.o \
ccflags-y += -I $(srctree)/$(src) -I $(srctree)/$(src)/$(GVT_DIR)/
i915-y += $(addprefix $(GVT_DIR)/, $(GVT_SOURCE))
+
+#ifdef CONFIG_DRM_USE_DYNAMIC_DEBUG
+ccflags-y += -DDYNAMIC_DEBUG_MODULE
+#endif
diff --git a/drivers/gpu/drm/i915/i915_params.c b/drivers/gpu/drm/i915/i915_params.c
index e07f4cfea63a..683e942a074e 100644
--- a/drivers/gpu/drm/i915/i915_params.c
+++ b/drivers/gpu/drm/i915/i915_params.c
@@ -265,3 +265,38 @@ void i915_params_free(struct i915_params *params)
I915_PARAMS_FOR_EACH(FREE);
#undef FREE
}
+
+#ifdef DRM_USE_DYNAMIC_DEBUG
+/* todo: needs DYNAMIC_DEBUG_MODULE in some cases */
+
+unsigned long __gvt_debug;
+EXPORT_SYMBOL(__gvt_debug);
+
+#define _help(key) "\t \"" key "\"\t: help for " key "\n"
+
+#define I915_GVT_CATEGORIES(name) \
+ " Enable debug output via /sys/module/i915/parameters/" #name \
+ ", where each bit enables a debug category.\n" \
+ _help("gvt:cmd:") \
+ _help("gvt:core:") \
+ _help("gvt:dpy:") \
+ _help("gvt:el:") \
+ _help("gvt:irq:") \
+ _help("gvt:mm:") \
+ _help("gvt:mmio:") \
+ _help("gvt:render:") \
+ _help("gvt:sched:")
+
+DEFINE_DYNAMIC_DEBUG_CATEGORIES(debug_gvt, __gvt_debug,
+ I915_GVT_CATEGORIES(debug_gvt),
+ _DD_cat_("gvt:cmd:"),
+ _DD_cat_("gvt:core:"),
+ _DD_cat_("gvt:dpy:"),
+ _DD_cat_("gvt:el:"),
+ _DD_cat_("gvt:irq:"),
+ _DD_cat_("gvt:mm:"),
+ _DD_cat_("gvt:mmio:"),
+ _DD_cat_("gvt:render:"),
+ _DD_cat_("gvt:sched:"));
+
+#endif
--
2.31.1
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