perf intel-pt: pkt-decoder: Add CFE and EVD packets

As of Intel SDM (https://www.intel.com/sdm) version 076, there is a new
Intel PT feature called Event Trace which requires 2 new packets CFE and
EVD. Add them to the packet decoder and packet decoder test.

Committer notes:

I got the "Intel® 64 and IA-32 architectures software developer’s manual
combined volumes: 1, 2A, 2B, 2C, 2D, 3A, 3B, 3C, 3D, and 4" PDF at:

  https://cdrdv2.intel.com/v1/dl/getContent/671200

And these new packets are described in page 3951:

<quote>
32.2.4

Event Trace is a capability that exposes details about the asynchronous
events, when they are generated, and when their corresponding software
event handler completes execution. These include:

o Interrupts, including NMI and SMI, including the interrupt vector when
defined.

o Faults, exceptions including the fault vector.

— Page faults additionally include the page fault address, when in context.

o Event handler returns, including IRET and RSM.

o VM exits and VM entries.¹

— VM exits include the values written to the “exit reason” and “exit qualification” VMCS fields.
INIT and SIPI events.

o TSX aborts, including the abort status returned for the RTM instructions.

o Shutdown.

Additionally, it provides indication of the status of the Interrupt Flag
(IF), to indicate when interrupts are masked.
</quote>

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20220124084201.2699795-4-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
index 0e013c2d9eb4..3980ee2080ae 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
@@ -820,6 +820,9 @@ static int intel_pt_calc_cyc_cb(struct intel_pt_pkt_info *pkt_info)
 	case INTEL_PT_BIP:
 	case INTEL_PT_BEP:
 	case INTEL_PT_BEP_IP:
+	case INTEL_PT_CFE:
+	case INTEL_PT_CFE_IP:
+	case INTEL_PT_EVD:
 		return 0;
 
 	case INTEL_PT_MTC:
@@ -1873,6 +1876,9 @@ static int intel_pt_walk_psbend(struct intel_pt_decoder *decoder)
 		case INTEL_PT_BIP:
 		case INTEL_PT_BEP:
 		case INTEL_PT_BEP_IP:
+		case INTEL_PT_CFE:
+		case INTEL_PT_CFE_IP:
+		case INTEL_PT_EVD:
 			decoder->have_tma = false;
 			intel_pt_log("ERROR: Unexpected packet\n");
 			err = -EAGAIN;
@@ -1975,6 +1981,9 @@ static int intel_pt_walk_fup_tip(struct intel_pt_decoder *decoder)
 		case INTEL_PT_BIP:
 		case INTEL_PT_BEP:
 		case INTEL_PT_BEP_IP:
+		case INTEL_PT_CFE:
+		case INTEL_PT_CFE_IP:
+		case INTEL_PT_EVD:
 			intel_pt_log("ERROR: Missing TIP after FUP\n");
 			decoder->pkt_state = INTEL_PT_STATE_ERR3;
 			decoder->pkt_step = 0;
@@ -2134,6 +2143,9 @@ static int intel_pt_vm_psb_lookahead_cb(struct intel_pt_pkt_info *pkt_info)
 	case INTEL_PT_TIP:
 	case INTEL_PT_PSB:
 	case INTEL_PT_TRACESTOP:
+	case INTEL_PT_CFE:
+	case INTEL_PT_CFE_IP:
+	case INTEL_PT_EVD:
 	default:
 		return 1;
 	}
@@ -2653,6 +2665,9 @@ static int intel_pt_vm_time_correlation(struct intel_pt_decoder *decoder)
 			decoder->blk_type = 0;
 			break;
 
+		case INTEL_PT_CFE:
+		case INTEL_PT_CFE_IP:
+		case INTEL_PT_EVD:
 		case INTEL_PT_MODE_EXEC:
 		case INTEL_PT_MODE_TSX:
 		case INTEL_PT_MNT:
@@ -2789,6 +2804,9 @@ static int intel_pt_hop_trace(struct intel_pt_decoder *decoder, bool *no_tip, in
 	case INTEL_PT_BIP:
 	case INTEL_PT_BEP:
 	case INTEL_PT_BEP_IP:
+	case INTEL_PT_CFE:
+	case INTEL_PT_CFE_IP:
+	case INTEL_PT_EVD:
 	default:
 		return HOP_PROCESS;
 	}
@@ -2857,6 +2875,9 @@ static int intel_pt_psb_lookahead_cb(struct intel_pt_pkt_info *pkt_info)
 	case INTEL_PT_BIP:
 	case INTEL_PT_BEP:
 	case INTEL_PT_BEP_IP:
+	case INTEL_PT_CFE:
+	case INTEL_PT_CFE_IP:
+	case INTEL_PT_EVD:
 		if (data->after_psbend) {
 			data->after_psbend -= 1;
 			if (!data->after_psbend)
@@ -3223,6 +3244,11 @@ next:
 			}
 			goto next;
 
+		case INTEL_PT_CFE:
+		case INTEL_PT_CFE_IP:
+		case INTEL_PT_EVD:
+			break;
+
 		default:
 			return intel_pt_bug(decoder);
 		}
@@ -3265,6 +3291,9 @@ static int intel_pt_walk_psb(struct intel_pt_decoder *decoder)
 		case INTEL_PT_BIP:
 		case INTEL_PT_BEP:
 		case INTEL_PT_BEP_IP:
+		case INTEL_PT_CFE:
+		case INTEL_PT_CFE_IP:
+		case INTEL_PT_EVD:
 			intel_pt_log("ERROR: Unexpected packet\n");
 			err = -ENOENT;
 			goto out;
@@ -3476,6 +3505,9 @@ static int intel_pt_walk_to_ip(struct intel_pt_decoder *decoder)
 		case INTEL_PT_BIP:
 		case INTEL_PT_BEP:
 		case INTEL_PT_BEP_IP:
+		case INTEL_PT_CFE:
+		case INTEL_PT_CFE_IP:
+		case INTEL_PT_EVD:
 		default:
 			break;
 		}