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authorLey Foon Tan <leyfoon.tan@starfivetech.com>2023-01-05 06:37:05 +0300
committerPalmer Dabbelt <palmer@rivosinc.com>2023-01-25 18:20:00 +0300
commitc1d6105869464635d8a2bcf87a43c05f4c0cfca4 (patch)
treee84b4599e8eae81d80ef5c8a5ee35f48ee96ae22 /arch/riscv/include
parentca0254998be4d74cf6add70ccfab0d2dbd362a10 (diff)
downloadlinux-c1d6105869464635d8a2bcf87a43c05f4c0cfca4.tar.xz
riscv: Move call to init_cpu_topology() to later initialization stage
If "capacity-dmips-mhz" is present in a CPU DT node, topology_parse_cpu_capacity() will fail to allocate memory. arm64, with which this code path is shared, does not call topology_parse_cpu_capacity() until later in boot where memory allocation is available. While "capacity-dmips-mhz" is not yet a valid property on RISC-V, invalid properties should be ignored rather than cause issues. Move init_cpu_topology(), which calls topology_parse_cpu_capacity(), to a later initialization stage, to match arm64. As a side effect of this change, RISC-V is "protected" from changes to core topology code that would work on arm64 where memory allocation is safe but on RISC-V isn't. Fixes: 03f11f03dbfe ("RISC-V: Parse cpu topology during boot.") Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Ley Foon Tan <leyfoon.tan@starfivetech.com> Link: https://lore.kernel.org/r/20230105033705.3946130-1-leyfoon.tan@starfivetech.com [Palmer: use Conor's commit text] Link: https://lore.kernel.org/linux-riscv/20230104183033.755668-1-pierre.gondois@arm.com/T/#me592d4c8b9508642954839f0077288a353b0b9b2 Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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