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Re: [PATCH 2/4] target/mips: Don't use clock_get_ns() in clock period ca
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From: |
Richard Henderson |
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Subject: |
Re: [PATCH 2/4] target/mips: Don't use clock_get_ns() in clock period calculation |
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Date: |
Tue, 8 Dec 2020 17:41:27 -0600 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 |
On 12/8/20 12:15 PM, Peter Maydell wrote:
> Currently the MIPS code uses the old clock_get_ns() API to
> calculate a time length in nanoseconds:
> cpu->cp0_count_rate * clock_get_ns(MIPS_CPU(cpu)->clock)
>
> This relies on the clock having a period which is an exact number
> of nanoseconds.
>
> Switch to the new clock_ticks_to_ns() function, which does the
> multiplication internally at a higher precision.
>
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
> target/mips/cpu.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
r~
[PATCH 4/4] clock: Define and use new clock_display_freq(), Peter Maydell, 2020/12/08
[PATCH 2/4] target/mips: Don't use clock_get_ns() in clock period calculation, Peter Maydell, 2020/12/08
[PATCH 3/4] clock: Remove clock_get_ns(), Peter Maydell, 2020/12/08
Re: [PATCH 0/4] clock: Get rid of clock_get_ns(), Philippe Mathieu-Daudé, 2020/12/11