[dpdk-dev] [20.11.3] test/power: fix CPU frequency when turbo enabled

Luca Boccassi luca.boccassi at gmail.com
Fri Aug 13 19:41:30 CEST 2021


On Fri, 2021-08-13 at 15:18 +0100, David Hunt wrote:
> On arm platform, the value in "/sys/.../cpuinfo_cur_freq" may not
> be exactly the same as what was set when using CPPC cpufreq driver.
> For other cpufreq driver, no need to round it currently, or else
> this check will fail with turbo enabled. For example, with acpi_cpufreq,
> cpuinfo_cur_freq can be 2401000 which is equal to freqs[0].It should
> not be rounded to 2400000.
> 
> This is a version of the patch for 20.11.3 that fixes this issue
> withouth the dependency of having the CPPC support applied first
> (modified version of 29343b9030e38e8c3519ba01cb66724d45b13dc8)
> 
> Fixes: 606a234c6d360 ("test/power: round CPU frequency to check")
> Cc: stable at dpdk.org
> 
> Signed-off-by: David Hunt <david.hunt at intel.com>
> ---
>  app/test/test_power_cpufreq.c | 25 ++++++++++++++++---------
>  1 file changed, 16 insertions(+), 9 deletions(-)

Acked-by: Luca Boccassi <luca.boccassi at microsoft.com>

Applied and pushed, thanks (next time, please don't include 
dev at dpdk.org but only stable, given it's a backport - otherwise it gets
filtered).

-- 
Kind regards,
Luca Boccassi



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