Oof, v3 had 2 copies renumbered and intermingled. Resending w/o the crud. v4 missed dri-devel & patchwork, sending there now. with doc tweak per Bagas. Its also at https://github.com/jimc/linux.git, in the dyn-drm-trc branch. Hi Jason, Greg, DRM-folk, This adds 'typed' "class FOO" support to dynamic-debug, where 'typed' means either DISJOINT (like drm debug categories), or VERBOSE (like nouveau debug-levels). Use it in DRM modules: core, helpers, and in drivers i915, amdgpu, nouveau. If a module is using class'd prdbgs (pr_debug_class, dev_dbg_class, or adapted drm_dbg_<category>) or similar in its code, it can "opt in" to allow dyndbg to manipulate those class'd prdebugs, by declaring in a c-file: DECLARE_DYNDBG_CLASSMAP(drm_debug_classes, DD_CLASS_TYPE_DISJOINT, 0, "DRM_UT_CORE", "DRM_UT_DRIVER", "DRM_UT_KMS", "DRM_UT_PRIME", "DRM_UT_ATOMIC", "DRM_UT_VBL", "DRM_UT_STATE", "DRM_UT_LEASE", "DRM_UT_DP", "DRM_UT_DRMRES"); // how-to stringify __va_args inside the macro ? By doing this, a module tells dyndbg that it: - is using class-ids [0..N] in prdbg callsites 0..N are the numeric values of DRM_UT_CORE..DRM_UT_DRMRES - wants to refer to them by class-names [0..N] - is mapping those names to those class-ids - expects users to enable them via >control or >parameter/knob Then, a user can enable the prdbgs by their class: :#> echo class DRM_UT_KMS +p > /proc/dynamic_debug/control And with another 3-line bitmap param decl/init, wrapping the drm_debug_classes var in a module-param-cb: :#> echo 0x1 > /sys/module/drm/parameters/debug and optionally: :#> echo +DRM_UT_CORE,-DRM_UT_KMS \ > /sys/module/drm/parameters/debug_cats DYNAMIC_DEBUG gets: new .class_id:5 field in struct _ddebug (callsite record) big enough to represent drm_debug_category (after squeezing) defaults to 31 for all existing prdbgs. class_id is also used to, or any reasonable number of verbose levels (30 is impractical, istm). classmaps (as declared by macro above) are in their own linker section, and are loaded by kernel/module, and handled by add_module, which attaches classmaps to their module's ddebug table. ddebug_change() handles a class FOO query by validating that FOO is known by each module in the loop. The query is skipped unless the module knows FOO, so no changes are possible w/o a good classname. Without class FOO in a query/command, only ids=31 can be changed by that query. This protects all class'd prdbgs from changes by old, class-less user queries. With this support, the module opt-in approach means that: - modules declare classnames they like, meaningful names, DRM_UT_* these are numbered [0..N] - modules call pr_debug_class(N, "fmt..",...) or drm_dbg(CAT, "fmt..",...) - same form. - class-id space, while limited:0-30, is private to each module - "class FOO" is only way to enable a class'd prdbg - unrelated modules use 0..N separately, for different purposes. - modules "share" classnames by separate decls (uses of macro) all drm modules reuse the above declaration. then they respond together to a >control 4 CLASS_TYPES are defined; they split behavior on 2 factors: 1. independent bits vs related:(X<Y) bits [0-N] 2. input form: number/hex vs CSV-list: [+-]CLASS_NAMES DD_CLASS_TYPE_DISJOINT independent bits, 0x1f input is clearest DD_CLASS_TYPE_VERBOSE (x<y), input is level, not bitvec DD_CLASS_TYPE_SYMBOLIC DISJOINT with csv-list of +-CLASS_NAMEs DD_CLASS_TYPE_LEVELS VERBOSE with csv-list of +-CLASS_NAMEs Splitting up behavior this way is safe, and flexible: - no bitmap-vs-level > sysknob ambiguity as was case when both were accepted on same knob - narrower interfaces uint is uint - can defer SYMBOLIC handling, but keep the enums. it has no users ... - can later add 2 more ENUMS allowing both inputs in separate VERBOSE & DISJOINT choices then authors choice if they want to accept mixed input - can enumerate "wierd" relations if needed DISJOINT|VERBOSE should cover everything I can forsee but theres room for DD_CLASS_TYPE_STOCHASTIC (over the garage) NB: DISJOINT v RELATED cover the space; there is no semi-related. The relation could differ from (x<y), but atm I can't think of another that makes any sensible distinction from VERBOSE. Quick review of debug logging: DRM is biggest use-case: 23 macros, issuing 10 exclusive categories of messages, from ~5100 callsites, across core (drm, _*helpers), and 3+ drivers (Im working amdgpu, i915, more recently nouveau). These mostly flow to drm_debug_enabled(category) for a print/no decision. nouveau has minimum direct use of the DRM.debug macros, but does use pr_debug (in VMM iirc), and drm_debug_enabled() in ~50 places via macros, and another ~50 iirc due to NOUVEAU_DEBUG_MMU=y What nouveau has most of is log-levels: there are ~800 uses of them; nvkm_(fatal|error|warn|info|debug|trace|spam), they all flow thru nvkm_printk_. Even excluding some levels as "always-on" and not appropriate for dyndbg's extra resources and complexity, theres ~450 callsites. A reported smattering of raw/adhoc debug code. all but unknown to me. Like any debug logging, they're mostly off, and should have close to 0-off-cost. This is what dyndbg (with/on jump-label) was made for. Bottom line: in order to unify more potential (drm,etc) use-cases, dyndbg needs to support both debug classification schemes: RELATED/VERBOSE and INDEPENDENT/DISJOINT. This is rev3. rev2 is here: https://lore.kernel.org/lkml/20220516225640.3102269-1-jim.cromie@xxxxxxxxx/ summary of diffs: - rebased on 5.19-rc6 to pick up kernel/module changes - tracfs bits now use __vstring, __vstr_assign, from S.Rostedt - 4 class-map-types - as outlined above now supports VERBOSE semantics, WIP nouveau integration. v2 became the DISJOINT use case Lots of API-ish surface area here *RFC* - class-maps now in section("__dyndbg_classes") class FOO queries are available at earlyboot / module-load drop (un)?register_classes() - test-dynamic-debug module tests the 4 CLASS-TYPES good place to bikeshed / paintshop the API - nouveau - start poking - WIP NV_PRINT -> dev_dbg (creates 632 prdbgs, but not class'd) VERBOSE classes declared to see how they "fit", unused yet. Summary: - plenty of new stuff here. - plenty of new API surface area. - exposes CLASSNAMES to user, via control, >symbolic-sysknob More on VERBOSE: dyndbg's class scheme is names-based, so even for VERBOSE with numeric input, there must be a "V0" name; a name with which to turn off "V1". And don't do 'pr_dbg_class(0,..)'. VERBOSE is an overlay on DISJOINT; the callback reads the input as a level, and computes and applies the bitmap to enforce it. Yes it wastes "V0" bit. That might matter if an author wanted many separate verbose-knobs with a few levels each, but that seems fairly unlikely. More importantly, it means that relative verbosity is not enforced at the >control input; IOW this is allowed: :#> echo class V1 -p > /proc/dynamic_debug/control :#> echo class V3 +p > /proc/dynamic_debug/control 2nd line doesn't undo 1st, as it would if changed via sysfs-knob: :#> echo 3 > /sys/module/drm/parameters/debug ISTM this is fine, the "relative" meaning is added at the interface, where it presents to a user. Doing otherwise means surgery to ddebug_change, which seems unnecessary given an option. CLASS NAMESPACE and DRM The class namespace is flat and wide, so "V1" is a poor choice, other than for demonstration (as in test_dynamic_debug module). If every module had a "V1", turning them all on would issue lots of unrelated noise. Instead, class DRM_UT_CORE has a name with a specific sub-system wide (ie multi-module) meaning, and can (and should) be responded to by all cooperating modules. For DRM, this means 4-5 duplicate uses of DEFINE_DYNDBG_CLASSMAP, from multiple drivers' "*_{drm,dev,main}.c" files; all of them agreeing on the classnames, map-type and base. Though repetitive, and a bit fiddly when multiple classes share the module's id-space, it is simple, and consistent with the "static struct foo = {INIT_expr}" pattern used in the macro. Im open to simpler ways, initializing an extern sounded like a maze w/o cheese. For core, drm_print.c has an additional task; it defines and initializes the bitmap sysknob that converts bits to a query: static struct ddebug_classes_bitmap_param drm_debug_bitmap = { .bits = &__drm_debug, .flags = "p", .map = &drm_debug_classes, }; module_param_cb(debug, ¶m_ops_dyndbg_classes, &drm_debug_bitmap, 0600); then the callback converts bit-toggles on input into something like: :#> echo class DRM_UT_KMS +p > control which enables all drm_dbg_kms() callsites in all modules that declared that classname as known. NB: classmaps and classes_bitmap_params are different structs. this allows the former to be shared by 2 of latter, each toggling 'p' & 'T' flags, to control output to syslog or tracelog independently. NBB: while "V1" isnt a good classname, "EMERG" and and other KERN-LEVEL names have a legacy. That said, dyndbg shouldnt be involved in EMERG actions. NOUVEAU and multiple VERBOSE knobs ? One thing nouveau has that I havent yet grokked is 2|3 independent verbose levels, in {,cli,sub}->debug (see subdev.h). But Ive coded them as 2 more macro invocations; using bases 10, 15 to avoid/respect the 0-9 mapping of DRM.debug categories to those class-ids. With this, the drm subsystem uses 20/31 of its class-id range, perhaps 63 is better, despite the cumbersome 0x-64bit interface. Note that the sysfs-knobs do not expose the base/offset (its an inward-facing .class_id offset); each sysfs-knob gets its own 0..N bitmap, the base maps it to the 0..30 subrange allocated (manually, via the base arg to macro) for this class-map. anyway, heres how `modprobe nouveau` goes with dynamic_debug.verbose=3 [86512.693954] dyndbg: class[0]: module:nouveau base:15 len:5 ty:1 [86512.693958] dyndbg: 15: 0 NV_SUBDEV_DBG_OFF # aka V0 [86512.693959] dyndbg: 16: 1 NV_SUBDEV_DBG_INFO [86512.693960] dyndbg: 17: 2 NV_SUBDEV_DBG_DEBUG [86512.693960] dyndbg: 18: 3 NV_SUBDEV_DBG_TRACE [86512.693960] dyndbg: 19: 4 NV_SUBDEV_DBG_SPAM [86512.693961] dyndbg: class[1]: module:nouveau base:10 len:5 ty:1 [86512.693961] dyndbg: 10: 0 NV_CLI_DBG_OFF [86512.693962] dyndbg: 11: 1 NV_CLI_DBG_INFO [86512.693962] dyndbg: 12: 2 NV_CLI_DBG_DEBUG [86512.693963] dyndbg: 13: 3 NV_CLI_DBG_TRACE [86512.693963] dyndbg: 14: 4 NV_CLI_DBG_SPAM [86512.693963] dyndbg: class[2]: module:nouveau base:0 len:10 ty:0 [86512.693964] dyndbg: 0: 0 DRM_UT_CORE [86512.693964] dyndbg: 1: 1 DRM_UT_DRIVER [86512.693965] dyndbg: 2: 2 DRM_UT_KMS [86512.693965] dyndbg: 3: 3 DRM_UT_PRIME [86512.693965] dyndbg: 4: 4 DRM_UT_ATOMIC [86512.693966] dyndbg: 5: 5 DRM_UT_VBL [86512.693966] dyndbg: 6: 6 DRM_UT_STATE [86512.693966] dyndbg: 7: 7 DRM_UT_LEASE [86512.693967] dyndbg: 8: 8 DRM_UT_DP [86512.693967] dyndbg: 9: 9 DRM_UT_DRMRES [86512.693968] dyndbg: module:nouveau attached 3 classes [86512.693968] dyndbg: 632 debug prints in module nouveau They are not yet wired by class; the nv-printks are using dev_dbg for now, so they can be enabled with standard selections (module, func, etc). DYNDBG API I added __pr_debug_cls to make things testable, I wanted to keep it private/un-api, because drm already has drm_dbg_<cat>(cat, fmt..), and that seemed a pretty good model to follow: enums with strong names for class_id constants, and same names for classes. ie: __pr_debug_cls(DRM_UT_KMS, "Whats the Matter with KMS: %s\n", reason); But now nouveau probably wants/needs it, perhaps others too. pr_dbg_cls / dev_dbg_cls ? class or debug spelled out ? MORE TESTING with DRM & TRACEFS Most dev & testing has been on virtme, with test-dynamic-debug module doing an api-validation-demonstration. The test module proves multiple sysknobs, but cannot prove real multi-module sharing of the class-name space. The DRM.debug adaptation must (and does) do that. Now Im running on real gpu/drm hw; on both an amdgpu desktop, and this amdgpu+nouveau laptop. Its stable enough to type on, browse, build more kernels, etc. :#> uname -r 5.18.0-f2-00038-g61d300083196 :#> wc /proc/dynamic_debug/control 11554 95556 1442827 /proc/dynamic_debug/control :#> lsmod | grep drm drm_buddy 20480 1 i915 drm_ttm_helper 16384 2 amdgpu,nouveau ttm 86016 4 amdgpu,drm_ttm_helper,i915,nouveau drm_dp_helper 184320 3 amdgpu,i915,nouveau drm_kms_helper 208896 6 drm_dp_helper,amdgpu,i915,nouveau drm 655360 16 gpu_sched,drm_dp_helper,drm_kms_helper,drm_buddy,amdgpu,drm_ttm_helper,i915,ttm,nouveau cec 49152 2 drm_dp_helper,i915 I've never turned on DRM.debug in frustration (or curiousity until recently); I dunno what normal traffic looks like. So I wrote a script to toggle each category: on/off for 1 sec, so I could 'more' thru the output to see the partitioned streams. Different runs (of '10' sec of active tracing) produce between 330-3500 lines of logging, depending upon mousing/screen activity. Heres a bit of a many-window-select run: `wc trace` gives "size" of the category's stream. :#> trc_classes 12 /sys/kernel/tracing/trace doing class DRM_UT_CORE +/- T 1394 13941 141614 /sys/kernel/tracing/trace doing class DRM_UT_DRIVER +/- T 1396 13959 141816 /sys/kernel/tracing/trace doing class DRM_UT_KMS +/- T 1482 14521 148246 /sys/kernel/tracing/trace doing class DRM_UT_PRIME +/- T 1484 14539 148446 /sys/kernel/tracing/trace doing class DRM_UT_ATOMIC +/- T 2984 31658 396064 /sys/kernel/tracing/trace doing class DRM_UT_VBL +/- T 3411 37321 449848 /sys/kernel/tracing/trace doing class DRM_UT_STATE +/- T 3413 37339 450048 /sys/kernel/tracing/trace doing class DRM_UT_LEASE +/- T 3415 37357 450248 /sys/kernel/tracing/trace doing class DRM_UT_DP +/- T 3417 37375 450442 /sys/kernel/tracing/trace doing class DRM_UT_DRMRES +/- T 3419 37393 450644 /sys/kernel/tracing/trace and some mid-run output from a quiet run, with less repetition. bash-96790 [006] ..... 410237.432255: tracing_mark_write: doing class DRM_UT_DRIVER +T bash-96790 [006] ..... 410238.610319: tracing_mark_write: doing class DRM_UT_DRIVER -T bash-96790 [006] ..... 410239.776285: tracing_mark_write: doing class DRM_UT_KMS +T gnome-shell-2101 [003] ..... 410239.923029: drm_debug: [FB:98] kworker/u32:10-367584 [010] ..... 410239.924627: drm_debug: Allow idle optimizations (MALL): 0 kworker/u32:0-364714 [008] ..... 410239.935126: drm_debug: Allow idle optimizations (MALL): 1 gnome-shell-2101 [003] ..... 410240.527186: drm_debug: [FB:100] kworker/u32:0-364714 [008] ..... 410240.528686: drm_debug: Allow idle optimizations (MALL): 0 kworker/u32:10-367584 [010] ..... 410240.539378: drm_debug: Allow idle optimizations (MALL): 1 bash-96790 [006] ..... 410240.957921: tracing_mark_write: doing class DRM_UT_KMS -T bash-96790 [006] ..... 410242.199120: tracing_mark_write: doing class DRM_UT_PRIME +T bash-96790 [006] ..... 410243.301988: tracing_mark_write: doing class DRM_UT_PRIME -T bash-96790 [006] ..... 410244.416400: tracing_mark_write: doing class DRM_UT_ATOMIC +T gnome-shell-2101 [003] ..... 410244.653372: drm_devdbg: cat:4, (0xffff8f26c173de00:0000:06:00.0)[UNSAFE-MEMORY] Allocated atomic state 000000001f1e6cb6 gnome-shell-2101 [003] ..... 410244.653381: drm_devdbg: cat:4, (0xffff8f26c173de00:0000:06:00.0)[UNSAFE-MEMORY] Added [PLANE:55:plane-3] 00000000785ae904 state to 000000001f1e6cb6 gnome-shell-2101 [003] ..... 410244.653384: drm_devdbg: cat:4, (0xffff8f26c173de00:0000:06:00.0)[UNSAFE-MEMORY] Added [CRTC:67:crtc-0] 00000000b06ca618 state to 000000001f1e6cb6 gnome-shell-2101 [003] ..... 410244.653389: drm_devdbg: cat:4, (0xffff8f26c173de00:0000:06:00.0)[UNSAFE-MEMORY] Set [FB:98] for [PLANE:55:plane-3] state 00000000785ae904 gnome-shell-2101 [003] ..... 410244.653392: drm_devdbg: cat:4, (0xffff8f26c173de00:0000:06:00.0)[UNSAFE-MEMORY] checking 000000001f1e6cb6 gnome-shell-2101 [003] ..... 410244.653407: drm_devdbg: cat:4, (0xffff8f26c173de00:0000:06:00.0)[UNSAFE-MEMORY] committing 000000001f1e6cb6 nonblocking kworker/u32:0-364714 [010] ..... 410244.653729: drm_debug: amdgpu_crtc id:0 crtc_state_flags: enable:1, active:1, planes_changed:1, mode_changed:0,active_changed:0,connectors_changed:0 kworker/u32:0-364714 [010] ..... 410244.654642: drm_debug: plane: id=3 dcc_en=0 a few things to note in the trace output: . the event-name: drm_(debug|devdbg) is not very informative . drm_devdbg fmt has cat:%d, it could be the classname, but that should replace event-name, not supplement it. this pertains to drm_debug too. . drm_devdbg has lots of (dev-info), that could be optional on a new flag(s) If anyone wants to repeat the above with the patchset, the .rc file follows: events_3() { local a=$1 local b=$2 local c=$3 echo $a > /sys/kernel/tracing/events/dyndbg/enable # avoid drm_vblank*, its noisy echo $b > /sys/kernel/tracing/events/drm/drm_debug/enable echo $c > /sys/kernel/tracing/events/drm/drm_devdbg/enable } flags_class() { local flgs=$1; local cls=$2; echo class $cls $flgs > /proc/dynamic_debug/control } # turn on each DRM_UT_* for 1 second each. # kinda shows relative traffic of each category # separated into blocks to get flavor of each drm_classes() { local flgs=$1 [ -z $flgs ] && flgs="p" #echo > /sys/kernel/tracing/trace #wc /sys/kernel/tracing/trace for cls in DRM_UT_CORE DRM_UT_DRIVER DRM_UT_KMS DRM_UT_PRIME DRM_UT_ATOMIC \ DRM_UT_VBL DRM_UT_STATE DRM_UT_LEASE DRM_UT_DP \ DRM_UT_DRMRES; do echo -n doing class $cls " " echo doing class $cls +$flgs sleep .1 flags_class +$flgs $cls sleep 1 echo doing class $cls -$flgs sleep .1 flags_class -$flgs $cls sleep 1 #wc /sys/kernel/tracing/trace done } # like above but with T flag, and markers, trace/enable trc_classes() { local flgs=$1 [ -z $flgs ] && flgs="T" echo > /sys/kernel/tracing/trace wc -l /sys/kernel/tracing/trace events_3 1 1 1 for cls in DRM_UT_CORE DRM_UT_DRIVER DRM_UT_KMS DRM_UT_PRIME \ DRM_UT_ATOMIC \ DRM_UT_VBL DRM_UT_STATE DRM_UT_LEASE DRM_UT_DP \ DRM_UT_DRMRES; do echo -n doing class $cls +/- $flgs " " echo doing class $cls +$flgs > /sys/kernel/tracing/trace_marker sleep .1 flags_class +$flgs $cls sleep 1 echo doing class $cls -$flgs > /sys/kernel/tracing/trace_marker sleep .1 flags_class -$flgs $cls sleep 1 wc /sys/kernel/tracing/trace done events_3 0 0 0 } I ignored a few checkpatch warns, preferring source's spacing conventions. Jim Cromie (40): Jim Cromie (40): 1st, a group of "cleanups" dyndbg: fix static_branch manipulation dyndbg: fix module.dyndbg handling dyndbg: show both old and new in change-info dyndbg: reverse module walk in cat control dyndbg: reverse module.callsite walk in cat control dyndbg: use ESCAPE_SPACE for cat control dyndbg: let query-modname override actual module name dyndbg: add test_dynamic_debug module dyndbg: drop EXPORTed dynamic_debug_exec_queries class FOO support dyndbg: add class_id to pr_debug callsites dyndbg: add __pr_debug_cls for testing dyndbg: add DECLARE_DYNDBG_CLASSMAP kernel/module: add __dyndbg_classes section dyndbg: add ddebug_attach_module_classes dyndbg: validate class FOO by checking with module dyndbg: add drm.debug style bitmap support dyndbg: test DECLARE_DYNDBG_CLASSMAP, sysfs nodes doc-dyndbg: describe "class CLASS_NAME" query support doc-dyndbg: edit dynamic-debug-howto for brevity, audience drm.debug adaptation drm_print: condense enum drm_debug_category drm: POC drm on dyndbg - use in core, 2 helpers, 3 drivers. drm_print: interpose drm_*dbg with forwarding macros drm_print: wrap drm_*_dbg in dyndbg descriptor factory macro drm-print: add drm_dbg_driver to improve namespace symmetry drm-print: include dyndbg header indirectly drm_print: refine drm_debug_enabled for jump-label drm_print: prefer bare printk KERN_DEBUG on generic fn drm_print: add _ddebug descriptor to drm_*dbg prototypes nouveau: change nvkm_debug/trace to use dev_dbg POC Steven Rostedt (Google) (1): tracing/events: Add __vstring() and __assign_vstr() helper macros new tracefs events: dyndbg: add _DPRINTK_FLAGS_ENABLED dyndbg: add _DPRINTK_FLAGS_TRACE dyndbg: add write-events-to-tracefs code dyndbg: add 2 trace-events: drm_{,dev}debug dyndbg: add 2 more trace-events: pr_debug, dev_dbg dyndbg/drm: POC add tracebits sysfs-knob nouveau-VERBOSE integration: WIP/exploratory. nouveau: adapt NV_DEBUG, NV_ATOMIC to use DRM.debug nouveau-dyndbg: alter DEBUG, TRACE, SPAM levels to use dyndbg nouveau-dbg: add 2 verbose-classmaps for CLI, SUBDEV nouveau-dbg: fixup lost prdbgs nouveau-dyndbg: wip subdev refine, breaks on use .../admin-guide/dynamic-debug-howto.rst | 252 ++++---- MAINTAINERS | 2 + drivers/gpu/drm/Kconfig | 12 + drivers/gpu/drm/Makefile | 2 + drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 14 + drivers/gpu/drm/display/drm_dp_helper.c | 13 + drivers/gpu/drm/drm_crtc_helper.c | 13 + drivers/gpu/drm/drm_print.c | 83 ++- drivers/gpu/drm/i915/i915_params.c | 12 + .../gpu/drm/nouveau/include/nvkm/core/debug.h | 16 + .../drm/nouveau/include/nvkm/core/subdev.h | 17 +- drivers/gpu/drm/nouveau/nouveau_drm.c | 20 + drivers/gpu/drm/nouveau/nouveau_drv.h | 16 +- drivers/gpu/drm/nouveau/nvkm/core/subdev.c | 23 + include/asm-generic/vmlinux.lds.h | 3 + include/drm/drm_print.h | 85 ++- include/linux/dynamic_debug.h | 179 +++++- include/linux/trace_events.h | 18 + include/trace/events/drm.h | 54 ++ include/trace/events/dyndbg.h | 74 +++ include/trace/stages/stage1_struct_define.h | 3 + include/trace/stages/stage2_data_offsets.h | 3 + include/trace/stages/stage4_event_fields.h | 3 + include/trace/stages/stage5_get_offsets.h | 4 + include/trace/stages/stage6_event_callback.h | 7 + kernel/module/internal.h | 2 + kernel/module/main.c | 10 +- lib/Kconfig.debug | 10 + lib/Makefile | 1 + lib/dynamic_debug.c | 540 +++++++++++++++--- lib/test_dynamic_debug.c | 165 ++++++ 31 files changed, 1374 insertions(+), 282 deletions(-) create mode 100644 include/trace/events/drm.h create mode 100644 include/trace/events/dyndbg.h create mode 100644 lib/test_dynamic_debug.c -- 2.36.1
