323925ed6d
Add the files and functions needed to support paravirt time on RISC-V. Also include the common code needed for the first application of pv-time, which is steal-time. In the next patches we'll complete the functions to fully enable steal-time support. Acked-by: Palmer Dabbelt <palmer@rivosinc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Atish Patra <atishp@rivosinc.com> Signed-off-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Anup Patel <anup@brainfault.org>
29 lines
610 B
C
29 lines
610 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_RISCV_PARAVIRT_H
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#define _ASM_RISCV_PARAVIRT_H
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#ifdef CONFIG_PARAVIRT
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#include <linux/static_call_types.h>
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struct static_key;
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extern struct static_key paravirt_steal_enabled;
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extern struct static_key paravirt_steal_rq_enabled;
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u64 dummy_steal_clock(int cpu);
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DECLARE_STATIC_CALL(pv_steal_clock, dummy_steal_clock);
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static inline u64 paravirt_steal_clock(int cpu)
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{
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return static_call(pv_steal_clock)(cpu);
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}
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int __init pv_time_init(void);
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#else
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#define pv_time_init() do {} while (0)
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#endif /* CONFIG_PARAVIRT */
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#endif /* _ASM_RISCV_PARAVIRT_H */
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