linux-kernel - [PATCH v5 1/2] perf,kvm/ppc: Add kvm

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Date:	Thu, 16 Jul 2015 21:18:41 +0530
From:	Hemant Kumar <hemant@...ux.vnet.ibm.com>
To:	linuxppc-dev@...ts.ozlabs.org
Cc:	linux-kernel@...r.kernel.org, acme@...nel.org, mingo@...nel.org,
	mpe@...erman.id.au, sukadev@...ux.vnet.ibm.com,
	maddy@...ux.vnet.ibm.com, warrier@...ux.vnet.ibm.com,
	srikar@...ux.vnet.ibm.com, paulus@...ba.org,
	scottwood@...escale.com, Hemant Kumar <hemant@...ux.vnet.ibm.com>
Subject: [PATCH v5 1/2] perf,kvm/ppc: Add kvm_perf.h for powerpc

To analyze the exit events with perf, we need kvm_perf.h to be added in
the arch/powerpc directory, where the kvm tracepoints needed to trace
the KVM exit events are defined.

This patch adds "kvm_perf_book3s.h" to indicate that the tracepoints are
book3s specific. Generic "kvm_perf.h" then can just include
"kvm_perf_book3s.h".

Signed-off-by: Hemant Kumar <hemant@...ux.vnet.ibm.com>
---
Changes:
- Not exporting the exit reasons compared to previous patchset (suggested by Paul)

 arch/powerpc/include/uapi/asm/kvm_perf.h        |  6 ++++++
 arch/powerpc/include/uapi/asm/kvm_perf_book3s.h | 14 ++++++++++++++
 2 files changed, 20 insertions(+)
 create mode 100644 arch/powerpc/include/uapi/asm/kvm_perf.h
 create mode 100644 arch/powerpc/include/uapi/asm/kvm_perf_book3s.h

diff --git a/arch/powerpc/include/uapi/asm/kvm_perf.h b/arch/powerpc/include/uapi/asm/kvm_perf.h
new file mode 100644
index 0000000..5ed2ff3
--- /dev/null
+++ b/arch/powerpc/include/uapi/asm/kvm_perf.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_POWERPC_KVM_PERF_H
+#define _ASM_POWERPC_KVM_PERF_H
+
+#include <asm/kvm_perf_book3s.h>
+
+#endif
diff --git a/arch/powerpc/include/uapi/asm/kvm_perf_book3s.h b/arch/powerpc/include/uapi/asm/kvm_perf_book3s.h
new file mode 100644
index 0000000..8c8d8c2
--- /dev/null
+++ b/arch/powerpc/include/uapi/asm/kvm_perf_book3s.h
@@ -0,0 +1,14 @@
+#ifndef _ASM_POWERPC_KVM_PERF_BOOK3S_H
+#define _ASM_POWERPC_KVM_PERF_BOOK3S_H
+
+#include <asm/kvm.h>
+
+#define DECODE_STR_LEN 20
+
+#define VCPU_ID "vcpu_id"
+
+#define KVM_ENTRY_TRACE "kvm_hv:kvm_guest_enter"
+#define KVM_EXIT_TRACE "kvm_hv:kvm_guest_exit"
+#define KVM_EXIT_REASON "trap"
+
+#endif /* _ASM_POWERPC_KVM_PERF_BOOK3S_H */
-- 
1.9.3

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