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Message-ID: <CAK8P3a3pdVhjv4J4HSB1cvHU7U_P7TV7HCOYmrK==V_MAnT2BQ@mail.gmail.com> Date: Sat, 25 Sep 2021 19:41:03 +0200 From: Arnd Bergmann <arnd@...db.de> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Cc: Sumit Semwal <sumit.semwal@...aro.org>, Christian König <christian.koenig@....com>, Alex Deucher <alexander.deucher@....com>, "Pan, Xinhui" <Xinhui.Pan@....com>, David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>, Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, Mauro Carvalho Chehab <mchehab@...nel.org>, Arnd Bergmann <arnd@...db.de>, dri-devel <dri-devel@...ts.freedesktop.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] dma-buf: move dma-buf symbols into the DMA_BUF module namespace On Sat, Sep 25, 2021 at 3:47 PM Greg Kroah-Hartman <gregkh@...uxfoundation.org> wrote: > > In order to better track where in the kernel the dma-buf code is used, > put the symbols in the namespace DMA_BUF and modify all users of the > symbols to properly import the namespace to not break the build at the > same time. > > Now the output of modinfo shows the use of these symbols, making it > easier to watch for users over time: > > $ modinfo drivers/misc/fastrpc.ko | grep import > import_ns: DMA_BUF > > Cc: Sumit Semwal <sumit.semwal@...aro.org> > Cc: "Christian König" <christian.koenig@....com> > Cc: Alex Deucher <alexander.deucher@....com> > Cc: "Pan, Xinhui" <Xinhui.Pan@....com> > Cc: David Airlie <airlied@...ux.ie> > Cc: Daniel Vetter <daniel@...ll.ch> > Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com> > Cc: Maxime Ripard <mripard@...nel.org> > Cc: Thomas Zimmermann <tzimmermann@...e.de> > Cc: Mauro Carvalho Chehab <mchehab@...nel.org> > Cc: Arnd Bergmann <arnd@...db.de> > Cc: dri-devel@...ts.freedesktop.org > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Acked-by: Arnd Bergmann <arnd@...db.de> > The topic of dma-buf came up in the Maintainer's summit yesterday, and > one comment was to put the symbols in their own module namespace, to > make it easier to notice and track who was using them. This patch does > so, and finds some "interesting" users of the api already in the tree. > > Only test-built on x86 allmodconfig, don't know what other arches will > pick up, will let 0-day run on it for a bit... I've added it to my build box doing arm32/arm64/x86 randconfig tests, if it doesn't report anything by Monday, it's probably good in that regard. Arnd
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