On 04/16/2010 10:34 AM, Zhang, Yanmin wrote:
Below is the kernel patch to enable perf to collect guest os statistics.
Joerg,
Would you like to add support on svm? I don't know the exact point to trigger
NMI to host with svm.
See below code with vmx:
+ kvm_before_handle_nmi(&vmx->vcpu);
asm("int $2");
+ kvm_after_handle_nmi(&vmx->vcpu);
Signed-off-by: Zhang Yanmin<yanmin_zhang@xxxxxxxxxxxxxxx>
Can you please split it further?
Patch 1 introduces perf_register_guest_info_callbacks() and related.
Ingo can merge this into a branch in tip.git.
Patch 2 is just the kvm bits, I'll apply that after merging the branch
with patch 1.
Patch 3 adds the tools/perf changes.
This way perf development can continue on tip.git, and kvm development
can continue on kvm.git, without the code bases diverging and requiring
a merge later.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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