Re: [PATCH libdrm] intel: annotate the intel genx helpers as private

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On Thu, Sep 13, 2018 at 09:45:47AM +0100, Eric Engestrom wrote:
> On Thursday, 2018-09-13 15:19:00 +0800, Chih-Wei Huang wrote:
> > Note this patch breaks drm_gralloc:
> > 
> > FAILED: out/target/product/x86_64/obj_x86/SHARED_LIBRARIES/libgralloc_drm_intermediates/LINKED/libgralloc_drm.so
> > /bin/bash -c "prebuilts/clang/host/linux-x86/clang-4053586/bin/clang++
> > -nostdlib -Wl,-soname,libgralloc_drm.so -Wl,--gc-sections -shared
> > out/target/product/x86_64/obj_x86/lib/crtbegin_so.o
> > out/target/product/x86_64/obj_x86/SHARED_LIBRARIES/libgralloc_drm_intermediates/gralloc_drm.o
> > out/target/product/x86_64/obj_x86/SHARED_LIBRARIES/libgralloc_drm_intermediates/gralloc_drm_kms.o
> > out/target/product/x86_64/obj_x86/SHARED_LIBRARIES/libgralloc_drm_intermediates/gralloc_drm_intel.o
> > out/target/product/x86_64/obj_x86/SHARED_LIBRARIES/libgralloc_drm_intermediates/gralloc_drm_radeon.o
> > out/target/product/x86_64/obj_x86/SHARED_LIBRARIES/libgralloc_drm_intermediates/gralloc_drm_nouveau.o
> > out/target/product/x86_64/obj_x86/SHARED_LIBRARIES/libgralloc_drm_intermediates/gralloc_drm_pipe.o
> > -Wl,--whole-archive  -Wl,--no-whole-archive
> > out/target/product/x86_64/obj_x86/STATIC_LIBRARIES/libcompiler_rt-extras_intermediates/libcompiler_rt-extras.a
> >   out/target/product/x86_64/obj_x86/STATIC_LIBRARIES/libatomic_intermediates/libatomic.a
> > out/target/product/x86_64/obj_x86/STATIC_LIBRARIES/libgcc_intermediates/libgcc.a
> > -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -Wl,--build-id=md5
> > -Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--gc-sections
> > -Wl,--hash-style=gnu -Wl,--no-undefined-version -m32  -target
> > i686-linux-android
> > -Bprebuilts/gcc/linux-x86/x86/x86_64-linux-android-4.9/x86_64-linux-android/bin
> > -Wl,--no-undefined out/target/product/x86_64/obj_x86/lib/libdrm.so
> > out/target/product/x86_64/obj_x86/lib/liblog.so
> > out/target/product/x86_64/obj_x86/lib/libcutils.so
> > out/target/product/x86_64/obj_x86/lib/libhardware_legacy.so
> > out/target/product/x86_64/obj_x86/lib/libdrm_intel.so
> > out/target/product/x86_64/obj_x86/lib/libdrm_radeon.so
> > out/target/product/x86_64/obj_x86/lib/libdrm_nouveau.so
> > out/target/product/x86_64/obj_x86/lib/libc++.so
> > out/target/product/x86_64/obj_x86/lib/libc.so
> > out/target/product/x86_64/obj_x86/lib/libm.so
> > out/target/product/x86_64/obj_x86/lib/libdl.so -o
> > out/target/product/x86_64/obj_x86/SHARED_LIBRARIES/libgralloc_drm_intermediates/LINKED/libgralloc_drm.so
> > out/target/product/x86_64/obj_x86/lib/crtend_so.o"
> > external/drm_gralloc/gralloc_drm_intel.c:631: error: undefined
> > reference to 'intel_is_genx'
> > external/drm_gralloc/gralloc_drm_intel.c:630: error: undefined
> > reference to 'intel_get_genx'
> > clang.real: error: linker command failed with exit code 1 (use -v to
> > see invocation)
> > 
> > 
> > That's because drm_gralloc use the IS_GEN9 macro
> > (and other IS_GEN{n} macros) directly.
> 
> Yeah, I thought some other stuff used the IS_GEN* macros ¯\_(ツ)_/¯
> 
> I assume my other patch ("intel: use drm namespace for exported functions",
> https://patchwork.kernel.org/patch/10590653/) works fine with drm_gralloc?

What a castle of cards we have here....

We should pick one build system and support only this one build system.

And the default build all should include tests. We shouldn't need a web
remote CI to inform us that we could be breaking the build.

When I pushed the first series I build locally using autotools and meson
and everything passed locally.

But then gitlab CI warned that ninja buildir test fail...

Than Daniel requested to use gitlab fork to make sure we pass CI
and here I went:

local ninja -C builddir test was happy and CI was green as we can see here:
https://gitlab.freedesktop.org/vivijim/drm/commit/b2c25182f29a0000b010afbb11748c213c9a3e8a/pipelines?ref=master

But then I just discovered that this broken autotools build!

> 
> > 
> > Since IS_GEN{n} are public APIs, I don't see
> > the rationale of this change.
> > Unless you are going to privatize all IS_GEN{n} macros.
> > (are you?)
> > 
> > 
> > 2018-09-13 0:03 GMT+08:00 Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>:
> > > On Wed, Sep 12, 2018 at 08:50:54AM -0700, Rodrigo Vivi wrote:
> > >> From: Emil Velikov <emil.velikov@xxxxxxxxxxxxx>
> > >>
> > >> They're used internally and never meant to be part of the API.
> > >> Add the drm_private notation, which should resolve that.
> > >>
> > >> v2: (Rodrigo) Add missing include.
> > >> v3: (Rodrigo) Keep includes grouped per Eric suggestion.
> > >>
> > >> Cc: Eric Engestrom <eric.engestrom@xxxxxxxxx>
> > >> Cc: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
> > >> Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> > >> Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> > >> Fixes: 4e81d4f9c9b ("intel: add generic functions to check PCI ID")
> > >> Signed-off-by: Emil Velikov <emil.velikov@xxxxxxxxxxxxx>
> > >> Acked-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
> > >> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> > >> Reviewed-by: Eric Engestrom <eric.engestrom@xxxxxxxxx>
> > >
> > > And pushed...
> > > thanks for patch, ack and review ;)
> > >
> > >> ---
> > >>  intel/intel_chipset.c | 4 ++--
> > >>  intel/intel_chipset.h | 5 +++--
> > >>  2 files changed, 5 insertions(+), 4 deletions(-)
> > >>
> > >> diff --git a/intel/intel_chipset.c b/intel/intel_chipset.c
> > >> index d5c33cc5..5aa4a2f2 100644
> > >> --- a/intel/intel_chipset.c
> > >> +++ b/intel/intel_chipset.c
> > >> @@ -44,7 +44,7 @@ static const struct pci_device {
> > >>       INTEL_SKL_IDS(9),
> > >>  };
> > >>
> > >> -bool intel_is_genx(unsigned int devid, int gen)
> > >> +drm_private bool intel_is_genx(unsigned int devid, int gen)
> > >>  {
> > >>       const struct pci_device *p,
> > >>                 *pend = pciids + sizeof(pciids) / sizeof(pciids[0]);
> > >> @@ -66,7 +66,7 @@ bool intel_is_genx(unsigned int devid, int gen)
> > >>       return false;
> > >>  }
> > >>
> > >> -bool intel_get_genx(unsigned int devid, int *gen)
> > >> +drm_private bool intel_get_genx(unsigned int devid, int *gen)
> > >>  {
> > >>       const struct pci_device *p,
> > >>                 *pend = pciids + sizeof(pciids) / sizeof(pciids[0]);
> > >> diff --git a/intel/intel_chipset.h b/intel/intel_chipset.h
> > >> index 9b1e64f1..5db207cc 100644
> > >> --- a/intel/intel_chipset.h
> > >> +++ b/intel/intel_chipset.h
> > >> @@ -329,9 +329,10 @@
> > >>
> > >>  /* New platforms use kernel pci ids */
> > >>  #include <stdbool.h>
> > >> +#include <libdrm_macros.h>
> > >>
> > >> -bool intel_is_genx(unsigned int devid, int gen);
> > >> -bool intel_get_genx(unsigned int devid, int *gen);
> > >> +drm_private bool intel_is_genx(unsigned int devid, int gen);
> > >> +drm_private bool intel_get_genx(unsigned int devid, int *gen);
> > >>
> > >>  #define IS_GEN9(devid) intel_is_genx(devid, 9)
> > >>  #define IS_GEN10(devid) intel_is_genx(devid, 10)
> > >> --
> > 
> > 
> > -- 
> > Chih-Wei
> > Android-x86 project
> > http://www.android-x86.org
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