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| author | Alejandro Jimenez <alejandro.j.jimenez@oracle.com> | 2024-05-06 22:53:20 +0000 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2024-06-05 06:18:27 -0700 |
| commit | 69148ccec679195f37c10af405eb5016eaf03992 (patch) | |
| tree | 338dec5fc4a0f65ed68617173c540c1627d9f236 /arch/x86/kvm/trace.h | |
| parent | 6fef518594bcb7e374f809717281bd02894929f8 (diff) | |
| download | linux-69148ccec679195f37c10af405eb5016eaf03992.tar.gz linux-69148ccec679195f37c10af405eb5016eaf03992.tar.bz2 linux-69148ccec679195f37c10af405eb5016eaf03992.zip | |
KVM: x86: Print names of apicv inhibit reasons in traces
Use the tracing infrastructure helper __print_flags() for printing flag
bitfields, to enhance the trace output by displaying a string describing
each of the inhibit reasons set.
The kvm_apicv_inhibit_changed tracepoint currently shows the raw bitmap
value, requiring the user to consult the source file where the inhibit
reasons are defined to decode the trace output.
Signed-off-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/20240506225321.3440701-2-alejandro.j.jimenez@oracle.com
Co-developed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/kvm/trace.h')
| -rw-r--r-- | arch/x86/kvm/trace.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h index e19fed438a67..e445fc3b0925 100644 --- a/arch/x86/kvm/trace.h +++ b/arch/x86/kvm/trace.h @@ -1375,6 +1375,10 @@ TRACE_EVENT(kvm_hv_stimer_cleanup, __entry->vcpu_id, __entry->timer_index) ); +#define kvm_print_apicv_inhibit_reasons(inhibits) \ + (inhibits), (inhibits) ? " " : "", \ + (inhibits) ? __print_flags(inhibits, "|", APICV_INHIBIT_REASONS) : "" + TRACE_EVENT(kvm_apicv_inhibit_changed, TP_PROTO(int reason, bool set, unsigned long inhibits), TP_ARGS(reason, set, inhibits), @@ -1391,9 +1395,10 @@ TRACE_EVENT(kvm_apicv_inhibit_changed, __entry->inhibits = inhibits; ), - TP_printk("%s reason=%u, inhibits=0x%lx", + TP_printk("%s reason=%u, inhibits=0x%lx%s%s", __entry->set ? "set" : "cleared", - __entry->reason, __entry->inhibits) + __entry->reason, + kvm_print_apicv_inhibit_reasons(__entry->inhibits)) ); TRACE_EVENT(kvm_apicv_accept_irq, |