Messages in this thread | | | From | Alex Deucher <> | Date | Fri, 19 Aug 2022 18:18:56 -0400 | Subject | Re: [PATCH] powerpc: export cpu_smallcore_map for modules |
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On Fri, Aug 19, 2022 at 6:18 PM Randy Dunlap <rdunlap@infradead.org> wrote: > > Fix build error when CONFIG_DRM_AMDGPU=m: > > ERROR: modpost: "cpu_smallcore_map" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > > by exporting 'cpu_smallcore_map' just as other per_cpu > symbols are exported. > > drivers/gpu/drm/amd/amdkfd/kfd_device.c calls cpu_smt_mask(). > This is an inline function on powerpc which references > cpu_smallcore_map. > > Fixes: 425752c63b6f ("powerpc: Detect the presence of big-cores via "ibm, thread-groups"") > Fixes: 7bc913085765 ("drm/amdkfd: Try to schedule bottom half on same core") > Signed-off-by: Randy Dunlap <rdunlap@infradead.org> > Cc: Gautham R. Shenoy <ego@linux.vnet.ibm.com> > Cc: Michael Ellerman <mpe@ellerman.id.au> > Cc: Nicholas Piggin <npiggin@gmail.com> > Cc: Christophe Leroy <christophe.leroy@csgroup.eu> > Cc: linuxppc-dev@lists.ozlabs.org > Cc: amd-gfx@lists.freedesktop.org > Cc: Felix Kuehling <Felix.Kuehling@amd.com> > Cc: Alex Deucher <alexander.deucher@amd.com> > Cc: Christian König <christian.koenig@amd.com> > Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
> --- > arch/powerpc/kernel/smp.c | 1 + > 1 file changed, 1 insertion(+) > > --- a/arch/powerpc/kernel/smp.c > +++ b/arch/powerpc/kernel/smp.c > @@ -86,6 +86,7 @@ DEFINE_PER_CPU(cpumask_var_t, cpu_core_m > static DEFINE_PER_CPU(cpumask_var_t, cpu_coregroup_map); > > EXPORT_PER_CPU_SYMBOL(cpu_sibling_map); > +EXPORT_PER_CPU_SYMBOL(cpu_smallcore_map); > EXPORT_PER_CPU_SYMBOL(cpu_l2_cache_map); > EXPORT_PER_CPU_SYMBOL(cpu_core_map); > EXPORT_SYMBOL_GPL(has_big_cores);
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