Re: [PATCH v2] ppc: cpufreq: disable preemption while checking CPU throttling state

Denis Kirjanov [off-list ref] writes:

On 11/7/16, Michael Ellerman [off-list ref] wrote:

quoted

Denis Kirjanov [off-list ref] writes:

quoted

    [   67.700897] BUG: using smp_processor_id() in preemptible [00000000] code: cat/7343
    [   67.700988] caller is .powernv_cpufreq_throttle_check+0x2c/0x710

When did this break?

I think that problem exists since commit
09a972d1620934142d30cfda455ffe429af751c4 ("cpufreq: powernv: Report
cpu frequency throttling") but I can be wrong

Yep that looks right to me, thanks.

Gautham, how bad is the bug here, do we want to send this to stable?

cheers