linux-kernel - [PATCH] cpufreq: powernv: Return the actual CPU frequency in /proc/cpuinfo

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Message-Id: <1507274648-14221-1-git-send-email-shriyak@linux.vnet.ibm.com>
Date:   Fri,  6 Oct 2017 12:54:08 +0530
From:   Shriya <shriyak@...ux.vnet.ibm.com>
To:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        mpe@...erman.id.au, paulus@...ba.org
Cc:     mikey@...ling.org, aneesh.kumar@...ux.vnet.ibm.com,
        ego@...ux.vnet.ibm.com, Shriya <shriyak@...ux.vnet.ibm.com>
Subject: [PATCH] cpufreq: powernv: Return the actual CPU frequency in /proc/cpuinfo

Make /proc/cpuinfo read the frequency of the CPU it is running at
instead of reading the cached value of the last requested frequency.
In conditions like WOF/throttle CPU can be running at a different
frequency than the requested frequency.

Signed-off-by: Shriya <shriyak@...ux.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 897aa14..55ea4bf 100644
--- a/arch/powerpc/platforms/powernv/setup.c
+++ b/arch/powerpc/platforms/powernv/setup.c
@@ -311,7 +311,7 @@ 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