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([2001:af0:8000:1409:193:86:92:181]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49fee6ced69sm37140085e9.0.2026.09.25.02.28.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 25 Sep 2026 02:28:07 -0700 (PDT) Message-ID: Date: Fri, 25 Sep 2026 11:28:06 +0200 Precedence: bulk X-Mailing-List: linux-arch@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v11 20/38] dyndbg,module: make proper substructs in _ddebug_info To: Jim Cromie Cc: Jason Baron , Shuah Khan , Andrew Morton , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Arnd Bergmann , Luis Chamberlain , Daniel Gomez , Sami Tolvanen , Aaron Tomlin , Jonathan Corbet , Greg Kroah-Hartman , Nathan Chancellor , Nicolas Schier , Shuah Khan , Randy Dunlap , "Rafael J. Wysocki" , Pavel Machek , Len Brown , Jonathan Corbet , Petr Mladek , Steven Rostedt , John Ogness , Sergey Senozhatsky , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arch@vger.kernel.org, linux-modules@vger.kernel.org, linux-doc@vger.kernel.org, linux-kbuild@vger.kernel.org, linux-pm@vger.kernel.org, Louis Chauvet References: <20260923-dd-cmap-part2-clean-v11-0-9b6c217fdf2f@gmail.com> <20260923-dd-cmap-part2-clean-v11-20-9b6c217fdf2f@gmail.com> Content-Language: en-US From: Petr Pavlu In-Reply-To: <20260923-dd-cmap-part2-clean-v11-20-9b6c217fdf2f@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 9/24/26 12:34 AM, Jim Cromie wrote: > recompose struct _ddebug_info, inserting proper sub-structs. > > The struct _ddebug_info has 2 pairs of _vec, num_##_vec fields, for > descs and classes respectively. for_subvec() makes walking these > vectors less cumbersome, now lets move those field pairs into their > own "vec" structs: _ddebug_descs & _ddebug_class_maps, and re-compose > struct _ddebug_info to contain them cleanly. This also lets us get > rid of for_subvec()'s num_##_vec paste-up. > > Also recompose struct ddebug_table to contain a _ddebug_info. This > reinforces _ddebug_info's use as a cursor into relevant data for a > builtin module, and access to the full _ddebug state for modules. > > NOTES: > > rename section:__dyndbg_classes to _class_maps, to better align with > struct _ddebug_class_maps. > > names together, for more obvious name pairing. > > Invariant: These vectors ref a contiguous subrange of __section memory > in builtin/DATA or in loadable modules via mod->dyndbg_info; with > guaranteed life-time for us. > > struct module contains a _ddebug_info field and module/main.c sets it > up, so that gets adjusted rather obviously. > > Signed-off-by: Jim Cromie > Reviewed-by: Louis Chauvet > --- > v8: set maps.len = nc unconditionally > v3: squash in section name changes. > > v2: > > Move RvB after SoB > In structs _ddebug_descs & _ddebug_class_maps, change int length to unsigned int > No use of <0 vals is contemplated. > > dyndbg: improve section names > > change __dyndbg to __dyndbg_descs > change __dyndbg_classes to __dyndbg_class_maps > > this sets up for adding __dyndbg_class_users > > fixup-drmprint > --- > include/asm-generic/dyndbg.lds.h | 14 +++--- > include/linux/dynamic_debug.h | 34 ++++++++----- > kernel/module/main.c | 12 ++--- > lib/dynamic_debug.c | 101 +++++++++++++++++++-------------------- > 4 files changed, 86 insertions(+), 75 deletions(-) Acked-by: Petr Pavlu # modules -- Petr