On 2022-08-19 17:01, Randy Dunlap 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 <rdun...@infradead.org>
Cc: Gautham R. Shenoy <e...@linux.vnet.ibm.com>
Cc: Michael Ellerman <m...@ellerman.id.au>
Cc: Nicholas Piggin <npig...@gmail.com>
Cc: Christophe Leroy <christophe.le...@csgroup.eu>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: amd-...@lists.freedesktop.org
Cc: Felix Kuehling <felix.kuehl...@amd.com>
Cc: Alex Deucher <alexander.deuc...@amd.com>
Cc: Christian König <christian.koe...@amd.com>
Cc: "Pan, Xinhui" <xinhui....@amd.com>
Acked-by: Felix Kuehling <felix.kuehl...@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);
