From: Song Shuai <suagrfillet@gmail.com> To: paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, conor.dooley@microchip.com Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Song Shuai <suagrfillet@gmail.com> Subject: [PATCH V2] riscv: export cpu/freq invariant to scheduler Date: Thu, 23 Mar 2023 20:39:24 +0800 [thread overview] Message-ID: <20230323123924.3032174-1-suagrfillet@gmail.com> (raw) 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> --- changes from V1: - fix the leading underscore and tidy the patch up --- arch/riscv/include/asm/topology.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 arch/riscv/include/asm/topology.h 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 */ -- 2.20.1
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From: Song Shuai <suagrfillet@gmail.com> To: paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, conor.dooley@microchip.com Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Song Shuai <suagrfillet@gmail.com> Subject: [PATCH V2] riscv: export cpu/freq invariant to scheduler Date: Thu, 23 Mar 2023 20:39:24 +0800 [thread overview] Message-ID: <20230323123924.3032174-1-suagrfillet@gmail.com> (raw) 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> --- changes from V1: - fix the leading underscore and tidy the patch up --- arch/riscv/include/asm/topology.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 arch/riscv/include/asm/topology.h 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 */ -- 2.20.1 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv
next reply other threads:[~2023-03-23 12:40 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-03-23 12:39 Song Shuai [this message] 2023-03-23 12:39 ` [PATCH V2] riscv: export cpu/freq invariant to scheduler Song Shuai 2023-03-23 17:24 ` Andrew Jones 2023-03-23 17:24 ` Andrew Jones 2023-03-27 6:48 ` Ley Foon Tan 2023-03-27 6:48 ` Ley Foon Tan 2023-04-19 14:22 ` Palmer Dabbelt 2023-04-19 14:22 ` Palmer Dabbelt 2023-03-27 11:49 ` Conor Dooley 2023-03-27 11:49 ` Conor Dooley 2023-04-19 14:22 ` Palmer Dabbelt 2023-04-19 14:22 ` Palmer Dabbelt 2023-04-19 14:30 ` patchwork-bot+linux-riscv 2023-04-19 14:30 ` patchwork-bot+linux-riscv
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