linux-kernel - [PATCH v6 2/2] perf,kvm/powerpc: Add hcall related info to kvm

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Message-Id: <1441003681-10259-2-git-send-email-hemant@linux.vnet.ibm.com>
Date:	Mon, 31 Aug 2015 12:18:01 +0530
From:	Hemant Kumar <hemant@...ux.vnet.ibm.com>
To:	linuxppc-dev@...ts.ozlabs.org
Cc:	linux-kernel@...r.kernel.org, scottwood@...escale.com,
	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, Hemant Kumar <hemant@...ux.vnet.ibm.com>
Subject: [PATCH v6 2/2] perf,kvm/powerpc: Add hcall related info to kvm_perf.h

To analyze the hcalls with perf kvm stat, we need the hcall related
tracepoint information to be exported.

This patch adds hcall tracepoints "kvm_hv:kvm_hcall_enter" and
"kvm_hv:kvm_hcall_exit" to kvm_perf.h. So, perf will now know to look
for these tracepoints if "perf kvm stat record" is invoked to collect
guest hcall statistics.

Signed-off-by: Hemant Kumar <hemant@...ux.vnet.ibm.com>
---
 arch/powerpc/include/uapi/asm/kvm_perf.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/powerpc/include/uapi/asm/kvm_perf.h b/arch/powerpc/include/uapi/asm/kvm_perf.h
index 68f105e..2af6290 100644
--- a/arch/powerpc/include/uapi/asm/kvm_perf.h
+++ b/arch/powerpc/include/uapi/asm/kvm_perf.h
@@ -12,6 +12,10 @@
 #define KVM_EXIT_TRACE_HV "kvm_hv:kvm_guest_exit"
 #define KVM_EXIT_REASON_HV "trap"
 
+#define KVM_HCALL_ENTRY_TRACE_HV "kvm_hv:kvm_hcall_enter"
+#define KVM_HCALL_EXIT_TRACE_HV "kvm_hv:kvm_hcall_exit"
+#define KVM_HCALL_REASON_HV "req"
+
 /* This is to shut the compiler up */
 #define KVM_ENTRY_TRACE ""
 #define KVM_EXIT_TRACE ""
-- 
1.9.3

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