linux-kernel - [PATCH] powercap/rapl: add support for cpu model 0x3f

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Message-Id: <20140813203326.957F58004E@prod-mail-relay07.akamai.com>
Date:	Wed, 13 Aug 2014 20:33:26 +0000 (GMT)
From:	Jason Baron <jbaron@...mai.com>
To:	jacob.jun.pan@...ux.intel.com, rafael.j.wysocki@...el.com
Cc:	durgadoss.r@...el.com, srivatsa.bhat@...ux.vnet.ibm.com,
	srinivas.pandruvada@...ux.intel.com, linux-kernel@...r.kernel.org
Subject: [PATCH] powercap/rapl: add support for cpu model 0x3f

I've confirmed that monitoring the package power usage as well
as setting power limits appear to be working as expected. However,
I do see in the logs:

[    5.082632] intel_rapl: RAPL domain core detection failed
[    5.088370] intel_rapl: RAPL domain uncore detection failed

So I'm not sure if the h/w simply doesn't support that, or if the
driver could be improved here. In any case, adding the 0x3f makes
the driver useful for me. Tested aginst cpu:

Intel(R) Xeon(R) CPU E5-2650 v3 @ 2.30GHz

Signed-off-by: Jason Baron <jbaron@...mai.com>
---
 drivers/powercap/intel_rapl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/powercap/intel_rapl.c b/drivers/powercap/intel_rapl.c
index b1cda6f..a362dcc 100644
--- a/drivers/powercap/intel_rapl.c
+++ b/drivers/powercap/intel_rapl.c
@@ -953,6 +953,7 @@ static const struct x86_cpu_id rapl_ids[] = {
 	{ X86_VENDOR_INTEL, 6, 0x3a},/* Ivy Bridge */
 	{ X86_VENDOR_INTEL, 6, 0x3c},/* Haswell */
 	{ X86_VENDOR_INTEL, 6, 0x3d},/* Broadwell */
+	{ X86_VENDOR_INTEL, 6, 0x3f},/* Haswell */
 	{ X86_VENDOR_INTEL, 6, 0x45},/* Haswell ULT */
 	/* TODO: Add more CPU IDs after testing */
 	{}
-- 
1.8.2.rc2

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