Messages in this thread | | | Date | Tue, 16 Jun 2015 20:27:07 -0600 | From | David Ahern <> | Subject | Re: [RFC PATCH] perf/kvm: Guest Symbol Resolution for powerpc |
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On 6/16/15 7:24 PM, Hemant Kumar wrote: > Because, this depends on the kernel tracepoint "kvm_hv:kvm_guest_exit". > perf_prepare_sample() in the kernel side sets the event->header.misc > field to > PERF_RECORD_MISC_KERNEL through perf_misc_flags(pt_regs). In case of > tracepoints which always get hit in the host kernel context, the > perf_misc_flags() will always return PERF_RECORD_MISC_KERNEL. > > IMHO we will rather have to set the cpumode in the user space for this > tracepoint > and we can't depend on the event->header.misc field for this case. > > What would you suggest? >
oh, right you are using a tracepoint for this. It does not have the hooks to specify cpumode. Never mind.
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