* [PATCH v2] cpufreq: powernv: Fix the frequency read by /proc/cpuinfo
@ 2017-10-13 4:36 Shriya
2017-11-14 11:12 ` [v2] " Michael Ellerman
0 siblings, 1 reply; 2+ messages in thread
From: Shriya @ 2017-10-13 4:36 UTC (permalink / raw)
To: mpe, mikey; +Cc: linux-kernel, linuxppc-dev, ego, shilpa.bhat, Shriya, stable
The call to /proc/cpuinfo in turn calls cpufreq_quick_get() which
returns the last frequency requested by the kernel, but may not
reflect the actual frequency the processor is running at.
This patch makes a call to cpufreq_get() instead which returns the
current frequency reported by the hardware.
Fixes : commit fb5153d05a7d ("powerpc: powernv: Implement
ppc_md.get_proc_freq()")
Cc: stable@vger.kernel.org
Signed-off-by: Shriya <shriyak@linux.vnet.ibm.com>
---
arch/powerpc/platforms/powernv/setup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c
index cf52d53..58e7ae5 100644
--- a/arch/powerpc/platforms/powernv/setup.c
+++ b/arch/powerpc/platforms/powernv/setup.c
@@ -312,7 +312,7 @@ static unsigned long pnv_get_proc_freq(unsigned int cpu)
{
unsigned long ret_freq;
- ret_freq = cpufreq_quick_get(cpu) * 1000ul;
+ ret_freq = cpufreq_get(cpu) * 1000ul;
/*
* If the backend cpufreq driver does not exist,
--
1.9.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [v2] cpufreq: powernv: Fix the frequency read by /proc/cpuinfo
2017-10-13 4:36 [PATCH v2] cpufreq: powernv: Fix the frequency read by /proc/cpuinfo Shriya
@ 2017-11-14 11:12 ` Michael Ellerman
0 siblings, 0 replies; 2+ messages in thread
From: Michael Ellerman @ 2017-11-14 11:12 UTC (permalink / raw)
To: Shriya, mikey
Cc: ego, linux-kernel, stable, Shriya, shilpa.bhat, linuxppc-dev
On Fri, 2017-10-13 at 04:36:41 UTC, Shriya wrote:
> The call to /proc/cpuinfo in turn calls cpufreq_quick_get() which
> returns the last frequency requested by the kernel, but may not
> reflect the actual frequency the processor is running at.
> This patch makes a call to cpufreq_get() instead which returns the
> current frequency reported by the hardware.
>
> Fixes : commit fb5153d05a7d ("powerpc: powernv: Implement
> ppc_md.get_proc_freq()")
> Cc: stable@vger.kernel.org
>
> Signed-off-by: Shriya <shriyak@linux.vnet.ibm.com>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/cd77b5ce208c153260ed7882d8910f
cheers
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