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[Xen-devel] Re: [PATCH RFC V2 4/5] kvm guest : Added configuration support to enable debug information for KVM Guests



On 10/24/2011 03:45 PM, Avi Kivity wrote:
On 10/23/2011 09:07 PM, Raghavendra K T wrote:
Added configuration support to enable debug information
for KVM Guests in debugfs

Signed-off-by: Srivatsa Vaddagiri<vatsa@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Suzuki Poulose<suzuki@xxxxxxxxxx>
Signed-off-by: Raghavendra K T<raghavendra.kt@xxxxxxxxxxxxxxxxxx>
---
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 1f03f82..ed34269 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -562,6 +562,15 @@ config KVM_GUEST
          This option enables various optimizations for running under the KVM
          hypervisor.

+config KVM_DEBUG_FS
+       bool "Enable debug information for KVM Guests in debugfs"
+       depends on KVM_GUEST
+       default n
+       ---help---
+         This option enables collection of various statistics for KVM guest.
+         Statistics are displayed in debugfs filesystem. Enabling this option
+         may incur significant overhead.
+
  source "arch/x86/lguest/Kconfig"



This might be better implemented through tracepoints, which an be
enabled dynamically.

Interesting option. I 'll explore this one. Thanks for pointing.

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