From: Michael Ellerman <mpe@ellerman.id.au>
To: <linuxppc-dev@ozlabs.org>
Cc: cody@linux.vnet.ibm.com, khandual@linux.vnet.ibm.com
Subject: [PATCH 12/20] powerpc/perf: Add hv_gpci interface header
Date: Fri, 14 Mar 2014 16:00:37 +1100 [thread overview]
Message-ID: <1394773245-18328-13-git-send-email-mpe@ellerman.id.au> (raw)
In-Reply-To: <1394773245-18328-1-git-send-email-mpe@ellerman.id.au>
From: Cody P Schafer <cody@linux.vnet.ibm.com>
"H_GetPerformanceCounterInfo" (refered to as hv_gpci or just gpci from
here on) is an interface to retrieve specific performance counters and
other data from the hypervisor. All outputs have a fixed format. This
header only describes the portions of the interface that we plan on
using in linux at this time.
Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
arch/powerpc/perf/hv-gpci.h | 73 +++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 73 insertions(+)
create mode 100644 arch/powerpc/perf/hv-gpci.h
diff --git a/arch/powerpc/perf/hv-gpci.h b/arch/powerpc/perf/hv-gpci.h
new file mode 100644
index 0000000..b25f460
--- /dev/null
+++ b/arch/powerpc/perf/hv-gpci.h
@@ -0,0 +1,73 @@
+#ifndef LINUX_POWERPC_PERF_HV_GPCI_H_
+#define LINUX_POWERPC_PERF_HV_GPCI_H_
+
+#include <linux/types.h>
+
+/* From the document "H_GetPerformanceCounterInfo Interface" v1.07 */
+
+/* H_GET_PERF_COUNTER_INFO argument */
+struct hv_get_perf_counter_info_params {
+ __be32 counter_request; /* I */
+ __be32 starting_index; /* IO */
+ __be16 secondary_index; /* IO */
+ __be16 returned_values; /* O */
+ __be32 detail_rc; /* O, only needed when called via *_norets() */
+
+ /*
+ * O, size each of counter_value element in bytes, only set for version
+ * >= 0x3
+ */
+ __be16 cv_element_size;
+
+ /* I, 0 (zero) for versions < 0x3 */
+ __u8 counter_info_version_in;
+
+ /* O, 0 (zero) if version < 0x3. Must be set to 0 when making hcall */
+ __u8 counter_info_version_out;
+ __u8 reserved[0xC];
+ __u8 counter_value[];
+} __packed;
+
+/*
+ * counter info version => fw version/reference (spec version)
+ *
+ * 8 => power8 (1.07)
+ * [7 is skipped by spec 1.07]
+ * 6 => TLBIE (1.07)
+ * 5 => v7r7m0.phyp (1.05)
+ * [4 skipped]
+ * 3 => v7r6m0.phyp (?)
+ * [1,2 skipped]
+ * 0 => v7r{2,3,4}m0.phyp (?)
+ */
+#define COUNTER_INFO_VERSION_CURRENT 0x8
+
+/*
+ * These determine the counter_value[] layout and the meaning of starting_index
+ * and secondary_index.
+ *
+ * Unless otherwise noted, @secondary_index is unused and ignored.
+ */
+enum counter_info_requests {
+
+ /* GENERAL */
+
+ /* @starting_index: must be -1 (to refer to the current partition)
+ */
+ CIR_SYSTEM_PERFORMANCE_CAPABILITIES = 0X40,
+};
+
+struct cv_system_performance_capabilities {
+ /* If != 0, allowed to collect data from other partitions */
+ __u8 perf_collect_privileged;
+
+ /* These following are only valid if counter_info_version >= 0x3 */
+#define CV_CM_GA (1 << 7)
+#define CV_CM_EXPANDED (1 << 6)
+#define CV_CM_LAB (1 << 5)
+ /* remaining bits are reserved */
+ __u8 capability_mask;
+ __u8 reserved[0xE];
+} __packed;
+
+#endif
--
1.8.3.2
next prev parent reply other threads:[~2014-03-14 5:00 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-14 5:00 powerpc/perf: patches for 3.15 Michael Ellerman
2014-03-14 5:00 ` [PATCH 01/20] powerpc/perf: Make some new raw event codes available in sysfs Michael Ellerman
2014-03-14 5:00 ` [PATCH 02/20] powerpc/perf: Define perf_event_print_debug() to print PMU register values Michael Ellerman
2014-03-14 5:00 ` [PATCH 03/20] powerpc: Add a cpu feature CPU_FTR_PMAO_BUG Michael Ellerman
2014-03-14 5:00 ` [PATCH 04/20] powerpc/perf: Add lost exception workaround Michael Ellerman
2014-03-14 5:00 ` [PATCH 05/20] powerpc/perf: Reject EBB events which specify a sample_type Michael Ellerman
2014-03-14 5:00 ` [PATCH 06/20] powerpc/perf: Clean up the EBB hash defines a little Michael Ellerman
2014-03-14 5:00 ` [PATCH 07/20] powerpc/perf: Avoid mutating event in power8_get_constraint() Michael Ellerman
2014-03-14 5:00 ` [PATCH 08/20] powerpc/perf: Add BHRB constraint and IFM MMCRA handling for EBB Michael Ellerman
2014-03-14 5:00 ` [PATCH 09/20] powerpc/perf: Enable BHRB access for EBB events Michael Ellerman
2014-03-14 5:00 ` [PATCH 10/20] sysfs: create bin_attributes under the requested group Michael Ellerman
2014-03-14 5:00 ` [PATCH 11/20] powerpc: Add hvcalls for 24x7 and gpci (Get Performance Counter Info) Michael Ellerman
2014-03-14 5:00 ` Michael Ellerman [this message]
2014-03-14 5:00 ` [PATCH 13/20] powerpc/perf: Add 24x7 interface headers Michael Ellerman
2014-03-14 5:00 ` [PATCH 14/20] powerpc/perf: Add a shared interface to get gpci version and capabilities Michael Ellerman
2014-03-14 5:00 ` [PATCH 15/20] powerpc/perf: Add macros for defining event fields & formats Michael Ellerman
2014-03-14 5:00 ` [PATCH 16/20] powerpc/perf: Add support for the hv gpci (get performance counter info) interface Michael Ellerman
2014-03-14 5:00 ` [PATCH 17/20] powerpc/perf: Add support for the hv 24x7 interface Michael Ellerman
2014-03-14 5:00 ` [PATCH 18/20] powerpc/perf: Add kconfig option for hypervisor provided counters Michael Ellerman
2014-03-14 5:00 ` [PATCH 19/20] powerpc/perf/hv_{gpci, 24x7}: Add documentation of device attributes Michael Ellerman
2014-03-14 5:00 ` [PATCH 20/20] powerpc/perf: Fix handling of L3 events with bank == 1 Michael Ellerman
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