perf script: Add synthesized Intel PT power and ptwrite events

Add definitions for synthesized Intel PT events for power and ptwrite.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1498811802-2301-1-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2 files changed, 231 insertions, 1 deletions

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index e87b480bbdd0..b458a0cc3544 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -1203,10 +1203,122 @@ static void print_sample_bpf_output(struct perf_sample *sample)
                        (char *)(sample->raw_data));
 }
 
-static void print_sample_synth(struct perf_sample *sample __maybe_unused,
+static void print_sample_spacing(int len, int spacing)
+{
+        if (len > 0 && len < spacing)
+                printf("%*s", spacing - len, "");
+}
+
+static void print_sample_pt_spacing(int len)
+{
+        print_sample_spacing(len, 34);
+}
+
+static void print_sample_synth_ptwrite(struct perf_sample *sample)
+{
+        struct perf_synth_intel_ptwrite *data = perf_sample__synth_ptr(sample);
+        int len;
+
+        if (perf_sample__bad_synth_size(sample, *data))
+                return;
+
+        len = printf(" IP: %u payload: %#" PRIx64 " ",
+                     data->ip, le64_to_cpu(data->payload));
+        print_sample_pt_spacing(len);
+}
+
+static void print_sample_synth_mwait(struct perf_sample *sample)
+{
+        struct perf_synth_intel_mwait *data = perf_sample__synth_ptr(sample);
+        int len;
+
+        if (perf_sample__bad_synth_size(sample, *data))
+                return;
+
+        len = printf(" hints: %#x extensions: %#x ",
+                     data->hints, data->extensions);
+        print_sample_pt_spacing(len);
+}
+
+static void print_sample_synth_pwre(struct perf_sample *sample)
+{
+        struct perf_synth_intel_pwre *data = perf_sample__synth_ptr(sample);
+        int len;
+
+        if (perf_sample__bad_synth_size(sample, *data))
+                return;
+
+        len = printf(" hw: %u cstate: %u sub-cstate: %u ",
+                     data->hw, data->cstate, data->subcstate);
+        print_sample_pt_spacing(len);
+}
+
+static void print_sample_synth_exstop(struct perf_sample *sample)
+{
+        struct perf_synth_intel_exstop *data = perf_sample__synth_ptr(sample);
+        int len;
+
+        if (perf_sample__bad_synth_size(sample, *data))
+                return;
+
+        len = printf(" IP: %u ", data->ip);
+        print_sample_pt_spacing(len);
+}
+
+static void print_sample_synth_pwrx(struct perf_sample *sample)
+{
+        struct perf_synth_intel_pwrx *data = perf_sample__synth_ptr(sample);
+        int len;
+
+        if (perf_sample__bad_synth_size(sample, *data))
+                return;
+
+        len = printf(" deepest cstate: %u last cstate: %u wake reason: %#x ",
+                     data->deepest_cstate, data->last_cstate,
+                     data->wake_reason);
+        print_sample_pt_spacing(len);
+}
+
+static void print_sample_synth_cbr(struct perf_sample *sample)
+{
+        struct perf_synth_intel_cbr *data = perf_sample__synth_ptr(sample);
+        unsigned int percent, freq;
+        int len;
+
+        if (perf_sample__bad_synth_size(sample, *data))
+                return;
+
+        freq = (le32_to_cpu(data->freq) + 500) / 1000;
+        len = printf(" cbr: %2u freq: %4u MHz ", data->cbr, freq);
+        if (data->max_nonturbo) {
+                percent = (5 + (1000 * data->cbr) / data->max_nonturbo) / 10;
+                len += printf("(%3u%%) ", percent);
+        }
+        print_sample_pt_spacing(len);
+}
+
+static void print_sample_synth(struct perf_sample *sample,
                                struct perf_evsel *evsel)
 {
         switch (evsel->attr.config) {
+        case PERF_SYNTH_INTEL_PTWRITE:
+                print_sample_synth_ptwrite(sample);
+                break;
+        case PERF_SYNTH_INTEL_MWAIT:
+                print_sample_synth_mwait(sample);
+                break;
+        case PERF_SYNTH_INTEL_PWRE:
+                print_sample_synth_pwre(sample);
+                break;
+        case PERF_SYNTH_INTEL_EXSTOP:
+                print_sample_synth_exstop(sample);
+                break;
+        case PERF_SYNTH_INTEL_PWRX:
+                print_sample_synth_pwrx(sample);
+                break;
+        case PERF_SYNTH_INTEL_CBR:
+                print_sample_synth_cbr(sample);
+                break;
         default:
                 break;
         }
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 855733c2adcf..9967c87af7a6 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -255,6 +255,124 @@ enum auxtrace_error_type {
 /* Attribute type for custom synthesized events */
 #define PERF_TYPE_SYNTH         (INT_MAX + 1U)
 
+/* Attribute config for custom synthesized events */
+enum perf_synth_id {
+        PERF_SYNTH_INTEL_PTWRITE,
+        PERF_SYNTH_INTEL_MWAIT,
+        PERF_SYNTH_INTEL_PWRE,
+        PERF_SYNTH_INTEL_EXSTOP,
+        PERF_SYNTH_INTEL_PWRX,
+        PERF_SYNTH_INTEL_CBR,
+};
+
+/*
+ * Raw data formats for synthesized events. Note that 4 bytes of padding are
+ * present to match the 'size' member of PERF_SAMPLE_RAW data which is always
+ * 8-byte aligned. That means we must dereference raw_data with an offset of 4.
+ * Refer perf_sample__synth_ptr() and perf_synth__raw_data().  It also means the
+ * structure sizes are 4 bytes bigger than the raw_size, refer
+ * perf_synth__raw_size().
+ */
+
+struct perf_synth_intel_ptwrite {
+        u32 padding;
+        union {
+                struct {
+                        u32     ip              :  1,
+                                reserved        : 31;
+                };
+                u32     flags;
+        };
+        u64     payload;
+};
+
+struct perf_synth_intel_mwait {
+        u32 padding;
+        u32 reserved;
+        union {
+                struct {
+                        u64     hints           :  8,
+                                reserved1       : 24,
+                                extensions      :  2,
+                                reserved2       : 30;
+                };
+                u64     payload;
+        };
+};
+
+struct perf_synth_intel_pwre {
+        u32 padding;
+        u32 reserved;
+        union {
+                struct {
+                        u64     reserved1       :  7,
+                                hw              :  1,
+                                subcstate       :  4,
+                                cstate          :  4,
+                                reserved2       : 48;
+                };
+                u64     payload;
+        };
+};
+
+struct perf_synth_intel_exstop {
+        u32 padding;
+        union {
+                struct {
+                        u32     ip              :  1,
+                                reserved        : 31;
+                };
+                u32     flags;
+        };
+};
+
+struct perf_synth_intel_pwrx {
+        u32 padding;
+        u32 reserved;
+        union {
+                struct {
+                        u64     deepest_cstate  :  4,
+                                last_cstate     :  4,
+                                wake_reason     :  4,
+                                reserved1       : 52;
+                };
+                u64     payload;
+        };
+};
+
+struct perf_synth_intel_cbr {
+        u32 padding;
+        union {
+                struct {
+                        u32     cbr             :  8,
+                                reserved1       :  8,
+                                max_nonturbo    :  8,
+                                reserved2       :  8;
+                };
+                u32     flags;
+        };
+        u32 freq;
+        u32 reserved3;
+};
+
+/*
+ * raw_data is always 4 bytes from an 8-byte boundary, so subtract 4 to get
+ * 8-byte alignment.
+ */
+static inline void *perf_sample__synth_ptr(struct perf_sample *sample)
+{
+        return sample->raw_data - 4;
+}
+
+static inline void *perf_synth__raw_data(void *p)
+{
+        return p + 4;
+}
+
+#define perf_synth__raw_size(d) (sizeof(d) - 4)
+
+#define perf_sample__bad_synth_size(s, d) ((s)->raw_size < sizeof(d) - 4)
+
 /*
  * The kernel collects the number of events it couldn't send in a stretch and
  * when possible sends this number in a PERF_RECORD_LOST event. The number of