| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.18 43/69] powerpc/powernv/cpufreq: Fix the frequency read by /proc/cpuinfo | Date | Mon, 18 Dec 2017 16:48:29 +0100 |
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3.18-stable review patch. If anyone has any objections, please let me know.
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From: Shriya <shriyak@linux.vnet.ibm.com>
[ Upstream commit cd77b5ce208c153260ed7882d8910f2395bfaabd ]
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: fb5153d05a7d ("powerpc: powernv: Implement ppc_md.get_proc_freq()") Signed-off-by: Shriya <shriyak@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- arch/powerpc/platforms/powernv/setup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/powerpc/platforms/powernv/setup.c +++ b/arch/powerpc/platforms/powernv/setup.c @@ -319,7 +319,7 @@ static unsigned long pnv_get_proc_freq(u { 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,
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