| Message ID | 3121082eb4beb461773ebb6f656ed9b4286967ee.1718305355.git.geert+renesas@glider.be (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/panic: Fixes and graphical logo | expand |
On 13/06/2024 21:18, Geert Uytterhoeven wrote: > Use the drm_fb_clip_offset() helper instead of open-coding the same > operation. Thanks, it's a nice cleanup. Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com> > > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> > --- > DRM_PANIC already selects DRM_KMS_HELPER. > > v2: > - New. > --- > drivers/gpu/drm/drm_panic.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/drm_panic.c b/drivers/gpu/drm/drm_panic.c > index 814ef5c20c08ee42..5b0acf8c86e402a8 100644 > --- a/drivers/gpu/drm/drm_panic.c > +++ b/drivers/gpu/drm/drm_panic.c > @@ -285,7 +285,7 @@ static void drm_panic_blit(struct drm_scanout_buffer *sb, struct drm_rect *clip, > return drm_panic_blit_pixel(sb, clip, sbuf8, spitch, fg_color); > > map = sb->map[0]; > - iosys_map_incr(&map, clip->y1 * sb->pitch[0] + clip->x1 * sb->format->cpp[0]); > + iosys_map_incr(&map, drm_fb_clip_offset(sb->pitch[0], sb->format, clip)); > > switch (sb->format->cpp[0]) { > case 2: > @@ -373,7 +373,7 @@ static void drm_panic_fill(struct drm_scanout_buffer *sb, struct drm_rect *clip, > return drm_panic_fill_pixel(sb, clip, color); > > map = sb->map[0]; > - iosys_map_incr(&map, clip->y1 * sb->pitch[0] + clip->x1 * sb->format->cpp[0]); > + iosys_map_incr(&map, drm_fb_clip_offset(sb->pitch[0], sb->format, clip)); > > switch (sb->format->cpp[0]) { > case 2:
Hi Geert,
kernel test robot noticed the following build errors:
[auto build test ERROR on drm-misc/drm-misc-next]
[cannot apply to linus/master v6.10-rc3 next-20240613]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Geert-Uytterhoeven/drm-panic-Fix-uninitialized-drm_scanout_buffer-set_pixel-crash/20240614-032053
base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link: https://lore.kernel.org/r/3121082eb4beb461773ebb6f656ed9b4286967ee.1718305355.git.geert%2Brenesas%40glider.be
patch subject: [PATCH v2 5/7] drm/panic: Convert to drm_fb_clip_offset()
config: x86_64-randconfig-003-20240615 (https://download.01.org/0day-ci/archive/20240615/202406151811.yEIZ6203-lkp@intel.com/config)
compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240615/202406151811.yEIZ6203-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202406151811.yEIZ6203-lkp@intel.com/
All errors (new ones prefixed by >>):
>> depmod: ERROR: Cycle detected: drm -> drm_kms_helper -> drm
depmod: ERROR: Found 2 modules in dependency cycles!
make[3]: *** [scripts/Makefile.modinst:128: depmod] Error 1 shuffle=844234264
make[3]: Target '__modinst' not remade because of errors.
make[2]: *** [Makefile:1842: modules_install] Error 2 shuffle=844234264
make[1]: *** [Makefile:240: __sub-make] Error 2 shuffle=844234264
make[1]: Target 'modules_install' not remade because of errors.
make: *** [Makefile:240: __sub-make] Error 2 shuffle=844234264
make: Target 'modules_install' not remade because of errors.
On Sat, Jun 15, 2024 at 12:55 PM kernel test robot <lkp@intel.com> wrote: > kernel test robot noticed the following build errors: > > [auto build test ERROR on drm-misc/drm-misc-next] > [cannot apply to linus/master v6.10-rc3 next-20240613] > [If your patch is applied to the wrong git tree, kindly drop us a note. > And when submitting patch, we suggest to use '--base' as documented in > https://git-scm.com/docs/git-format-patch#_base_tree_information] > > url: https://github.com/intel-lab-lkp/linux/commits/Geert-Uytterhoeven/drm-panic-Fix-uninitialized-drm_scanout_buffer-set_pixel-crash/20240614-032053 > base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next > patch link: https://lore.kernel.org/r/3121082eb4beb461773ebb6f656ed9b4286967ee.1718305355.git.geert%2Brenesas%40glider.be > patch subject: [PATCH v2 5/7] drm/panic: Convert to drm_fb_clip_offset() > config: x86_64-randconfig-003-20240615 (https://download.01.org/0day-ci/archive/20240615/202406151811.yEIZ6203-lkp@intel.com/config) > compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0 > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240615/202406151811.yEIZ6203-lkp@intel.com/reproduce) > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > the same patch/commit), kindly add following tags > | Reported-by: kernel test robot <lkp@intel.com> > | Closes: https://lore.kernel.org/oe-kbuild-all/202406151811.yEIZ6203-lkp@intel.com/ > > All errors (new ones prefixed by >>): > > >> depmod: ERROR: Cycle detected: drm -> drm_kms_helper -> drm > depmod: ERROR: Found 2 modules in dependency cycles! Oops, so DRM core cannot call any of the helpers, and DRM_PANIC selecting DRM_KMS_HELPER was wrong in the first place? Gr{oetje,eeting}s, Geert
On Sun, Jun 16, 2024 at 11:08 AM Geert Uytterhoeven <geert@linux-m68k.org> wrote: > On Sat, Jun 15, 2024 at 12:55 PM kernel test robot <lkp@intel.com> wrote: > > kernel test robot noticed the following build errors: > > > > [auto build test ERROR on drm-misc/drm-misc-next] > > [cannot apply to linus/master v6.10-rc3 next-20240613] > > [If your patch is applied to the wrong git tree, kindly drop us a note. > > And when submitting patch, we suggest to use '--base' as documented in > > https://git-scm.com/docs/git-format-patch#_base_tree_information] > > > > url: https://github.com/intel-lab-lkp/linux/commits/Geert-Uytterhoeven/drm-panic-Fix-uninitialized-drm_scanout_buffer-set_pixel-crash/20240614-032053 > > base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next > > patch link: https://lore.kernel.org/r/3121082eb4beb461773ebb6f656ed9b4286967ee.1718305355.git.geert%2Brenesas%40glider.be > > patch subject: [PATCH v2 5/7] drm/panic: Convert to drm_fb_clip_offset() > > config: x86_64-randconfig-003-20240615 (https://download.01.org/0day-ci/archive/20240615/202406151811.yEIZ6203-lkp@intel.com/config) > > compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0 > > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240615/202406151811.yEIZ6203-lkp@intel.com/reproduce) > > > > If you fix the issue in a separate patch/commit (i.e. not just a new version of > > the same patch/commit), kindly add following tags > > | Reported-by: kernel test robot <lkp@intel.com> > > | Closes: https://lore.kernel.org/oe-kbuild-all/202406151811.yEIZ6203-lkp@intel.com/ > > > > All errors (new ones prefixed by >>): > > > > >> depmod: ERROR: Cycle detected: drm -> drm_kms_helper -> drm > > depmod: ERROR: Found 2 modules in dependency cycles! > > Oops, so DRM core cannot call any of the helpers, and DRM_PANIC > selecting DRM_KMS_HELPER was wrong in the first place? Q: So how does this work with DRM_PANIC calling drm_fb_helper_emergency_disable()? A: drm_fb_helper_emergency_disable() is a dummy if !CONFIG_DRM_FBDEV_EMULATION, so I guess no one tried to build a failing randconfig with CONFIG_DRM_FBDEV_EMULATION=y yet. Gr{oetje,eeting}s, Geert
On 16/06/2024 11:12, Geert Uytterhoeven wrote: > On Sun, Jun 16, 2024 at 11:08 AM Geert Uytterhoeven > <geert@linux-m68k.org> wrote: >> On Sat, Jun 15, 2024 at 12:55 PM kernel test robot <lkp@intel.com> wrote: >>> kernel test robot noticed the following build errors: >>> >>> [auto build test ERROR on drm-misc/drm-misc-next] >>> [cannot apply to linus/master v6.10-rc3 next-20240613] >>> [If your patch is applied to the wrong git tree, kindly drop us a note. >>> And when submitting patch, we suggest to use '--base' as documented in >>> https://git-scm.com/docs/git-format-patch#_base_tree_information] >>> >>> url: https://github.com/intel-lab-lkp/linux/commits/Geert-Uytterhoeven/drm-panic-Fix-uninitialized-drm_scanout_buffer-set_pixel-crash/20240614-032053 >>> base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next >>> patch link: https://lore.kernel.org/r/3121082eb4beb461773ebb6f656ed9b4286967ee.1718305355.git.geert%2Brenesas%40glider.be >>> patch subject: [PATCH v2 5/7] drm/panic: Convert to drm_fb_clip_offset() >>> config: x86_64-randconfig-003-20240615 (https://download.01.org/0day-ci/archive/20240615/202406151811.yEIZ6203-lkp@intel.com/config) >>> compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0 >>> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240615/202406151811.yEIZ6203-lkp@intel.com/reproduce) >>> >>> If you fix the issue in a separate patch/commit (i.e. not just a new version of >>> the same patch/commit), kindly add following tags >>> | Reported-by: kernel test robot <lkp@intel.com> >>> | Closes: https://lore.kernel.org/oe-kbuild-all/202406151811.yEIZ6203-lkp@intel.com/ >>> >>> All errors (new ones prefixed by >>): >>> >>>>> depmod: ERROR: Cycle detected: drm -> drm_kms_helper -> drm >>> depmod: ERROR: Found 2 modules in dependency cycles! >> >> Oops, so DRM core cannot call any of the helpers, and DRM_PANIC >> selecting DRM_KMS_HELPER was wrong in the first place? > > Q: So how does this work with DRM_PANIC calling > drm_fb_helper_emergency_disable()? > A: drm_fb_helper_emergency_disable() is a dummy if > !CONFIG_DRM_FBDEV_EMULATION, so I guess no one tried to build > a failing randconfig with CONFIG_DRM_FBDEV_EMULATION=y yet. drm_fb_helper_emergency_disable() is part of the series https://patchwork.freedesktop.org/series/132720/ which, after discussing it on IRC with sima and Javier, is not a good solution, and is abandoned. I think the "select DRM_KMS_HELPER" is a leftover from earlier version of drm_panic, that used the color conversion function from drm_kms_helper, but that has changed in v10 and later. drm_panic is called from the drm_core code, so in fact it can't depends on the kms helper. I don't see a good solution to workaround this circular dependency, maybe depends on DRM_KMS_HELPER being built-in ? (so that means drm_core will also be built-in). But that means platform that build drm core as module, won't be able to use drm_panic. There are a few of them in the kernel tree: rg -l CONFIG_DRM=m arch/powerpc/configs/85xx/stx_gp3_defconfig arch/powerpc/configs/ppc6xx_defconfig arch/powerpc/configs/skiroot_defconfig arch/powerpc/configs/pmac32_defconfig arch/mips/configs/ci20_defconfig arch/arc/configs/axs101_defconfig arch/arc/configs/axs103_smp_defconfig arch/riscv/configs/defconfig arch/parisc/configs/generic-32bit_defconfig arch/arm/configs/davinci_all_defconfig arch/arm/configs/omap2plus_defconfig arch/arm/configs/pxa_defconfig arch/arm64/configs/defconfig > > Gr{oetje,eeting}s, > > Geert >
diff --git a/drivers/gpu/drm/drm_panic.c b/drivers/gpu/drm/drm_panic.c index 814ef5c20c08ee42..5b0acf8c86e402a8 100644 --- a/drivers/gpu/drm/drm_panic.c +++ b/drivers/gpu/drm/drm_panic.c @@ -285,7 +285,7 @@ static void drm_panic_blit(struct drm_scanout_buffer *sb, struct drm_rect *clip, return drm_panic_blit_pixel(sb, clip, sbuf8, spitch, fg_color); map = sb->map[0]; - iosys_map_incr(&map, clip->y1 * sb->pitch[0] + clip->x1 * sb->format->cpp[0]); + iosys_map_incr(&map, drm_fb_clip_offset(sb->pitch[0], sb->format, clip)); switch (sb->format->cpp[0]) { case 2: @@ -373,7 +373,7 @@ static void drm_panic_fill(struct drm_scanout_buffer *sb, struct drm_rect *clip, return drm_panic_fill_pixel(sb, clip, color); map = sb->map[0]; - iosys_map_incr(&map, clip->y1 * sb->pitch[0] + clip->x1 * sb->format->cpp[0]); + iosys_map_incr(&map, drm_fb_clip_offset(sb->pitch[0], sb->format, clip)); switch (sb->format->cpp[0]) { case 2:
Use the drm_fb_clip_offset() helper instead of open-coding the same operation. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> --- DRM_PANIC already selects DRM_KMS_HELPER. v2: - New. --- drivers/gpu/drm/drm_panic.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)