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clocksource/drivers/riscv_timer: Provide the sched_clock

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Currently, we don't have a sched_clock registered for RISC-V systems.
This means Linux time keeping will use jiffies (running at HZ) as the
default sched_clock.

To avoid this, we explicity provide sched_clock using RISC-V rdtime
instruction (similar to riscv_timer clocksource).

Signed-off-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Anup Patel
2018-12-04 15:59:52 +05:30
committed by Daniel Lezcano
parent 4f352d1fc5
commit 92e0d143fd
2 changed files with 10 additions and 1 deletions
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2
drivers/clocksource/Kconfig
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@@ -599,7 +599,7 @@ config ATCPIT100_TIMER
config RISCV_TIMER
bool "Timer for the RISC-V platform"
depends on RISCV
depends on GENERIC_SCHED_CLOCK && RISCV
default y
select TIMER_PROBE
select TIMER_OF