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| author | Song Shuai <suagrfillet@gmail.com> | 2023-03-23 20:39:24 +0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-04-18 20:29:37 -0700 |
| commit | c4b52d8b6c1de1e6359bef2d1394d5917940b3dc (patch) | |
| tree | 1b1685c01d3966c48b1c0a7a1a45703ca1202f02 /arch/riscv | |
| parent | eb04e72b345b01d192163e012853fb28f433b234 (diff) | |
| download | linux-stable-c4b52d8b6c1de1e6359bef2d1394d5917940b3dc.tar.gz linux-stable-c4b52d8b6c1de1e6359bef2d1394d5917940b3dc.tar.bz2 linux-stable-c4b52d8b6c1de1e6359bef2d1394d5917940b3dc.zip | |
riscv: export cpu/freq invariant to scheduler
RISC-V now manages CPU topology using arch_topology which provides
CPU capacity and frequency related interfaces to access the cpu/freq
invariant in possible heterogeneous or DVFS-enabled platforms.
Here adds topology.h file to export the arch_topology interfaces for
replacing the scheduler's constant-based cpu/freq invariant accounting.
Signed-off-by: Song Shuai <suagrfillet@gmail.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Ley Foon Tan <lftan@kernel.org>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230323123924.3032174-1-suagrfillet@gmail.com
[Palmer: Fix the whitespace issues.]
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/include/asm/topology.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/topology.h b/arch/riscv/include/asm/topology.h new file mode 100644 index 000000000000..727e8d163a3b --- /dev/null +++ b/arch/riscv/include/asm/topology.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_RISCV_TOPOLOGY_H +#define _ASM_RISCV_TOPOLOGY_H + +#include <linux/arch_topology.h> + +/* Replace task scheduler's default frequency-invariant accounting */ +#define arch_scale_freq_tick topology_scale_freq_tick +#define arch_set_freq_scale topology_set_freq_scale +#define arch_scale_freq_capacity topology_get_freq_scale +#define arch_scale_freq_invariant topology_scale_freq_invariant + +/* Replace task scheduler's default cpu-invariant accounting */ +#define arch_scale_cpu_capacity topology_get_cpu_scale + +/* Enable topology flag updates */ +#define arch_update_cpu_topology topology_update_cpu_topology + +#include <asm-generic/topology.h> +#endif /* _ASM_RISCV_TOPOLOGY_H */ |