linux-kernel - [PATCH v12 08/10] powerpc/powernv: Thread IMC events detection

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Message-Id: <1499074673-30576-7-git-send-email-anju@linux.vnet.ibm.com>
Date:   Mon,  3 Jul 2017 15:07:52 +0530
From:   Anju T Sudhakar <anju@...ux.vnet.ibm.com>
To:     mpe@...erman.id.au
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        ego@...ux.vnet.ibm.com, bsingharora@...il.com, anton@...ba.org,
        sukadev@...ux.vnet.ibm.com, mikey@...ling.org,
        stewart@...ux.vnet.ibm.com, dja@...ens.net, eranian@...gle.com,
        hemant@...ux.vnet.ibm.com, maddy@...ux.vnet.ibm.com,
        anju@...ux.vnet.ibm.com
Subject: [PATCH v12 08/10] powerpc/powernv: Thread IMC events detection

Code to add support for detection of thread IMC events. It adds a new
domain IMC_DOMAIN_THREAD and it is determined with the help of the
"type" property in the imc device-tree.

Signed-off-by: Anju T Sudhakar <anju@...ux.vnet.ibm.com>
Signed-off-by: Hemant Kumar <hemant@...ux.vnet.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>
---
 arch/powerpc/include/asm/imc-pmu.h        | 2 ++
 arch/powerpc/platforms/powernv/opal-imc.c | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/include/asm/imc-pmu.h b/arch/powerpc/include/asm/imc-pmu.h
index 24a6112ca0b5..e71e0d77d1d7 100644
--- a/arch/powerpc/include/asm/imc-pmu.h
+++ b/arch/powerpc/include/asm/imc-pmu.h
@@ -107,6 +107,7 @@ struct imc_pmu_ref {
 
 /* In-Memory Collection Counters Type */
 enum {
+	IMC_COUNTER_PER_THREAD		= 0x1,
 	IMC_COUNTER_PER_CORE		= 0x4,
 	IMC_COUNTER_PER_CHIP            = 0x10,
 };
@@ -116,6 +117,7 @@ enum {
  */
 #define IMC_DOMAIN_NEST		1
 #define IMC_DOMAIN_CORE		2
+#define IMC_DOMAIN_THREAD	3
 
 extern struct imc_pmu *per_nest_pmu_arr[IMC_MAX_PMUS];
 extern struct imc_pmu *core_imc_pmu;
diff --git a/arch/powerpc/platforms/powernv/opal-imc.c b/arch/powerpc/platforms/powernv/opal-imc.c
index 91b8dd8d7619..2f857ec826e6 100644
--- a/arch/powerpc/platforms/powernv/opal-imc.c
+++ b/arch/powerpc/platforms/powernv/opal-imc.c
@@ -380,7 +380,7 @@ static int imc_get_mem_addr_nest(struct device_node *node,
 /*
  * imc_pmu_create : Takes the parent device which is the pmu unit, pmu_index
  *		    and domain as the inputs.
- * Allocates memory for the pmu, sets up its domain (NEST/CORE), and
+ * Allocates memory for the pmu, sets up its domain (NEST/CORE/THREAD), and
  * calls imc_events_setup() to allocate memory for the events supported
  * by this pmu. Assigns a name for the pmu.
  *
@@ -531,6 +531,8 @@ static int opal_imc_counters_probe(struct platform_device *pdev)
 			domain = IMC_DOMAIN_NEST;
 		else if (type == IMC_COUNTER_PER_CORE)
 			domain = IMC_DOMAIN_CORE;
+		else if (type == IMC_COUNTER_PER_THREAD)
+			domain = IMC_DOMAIN_THREAD;
 		else
 			continue;
 		if (!imc_pmu_create(imc_dev, pmu_count, domain))
-- 
2.11.0