Aperf: Use JSON for Perf Stat events

Move to using JSON to hold the event details for Perf Stat. This makes
it easier to modify the files without the need for interacting with the
Rust compiler.

This is also in preparation for allowing the user to specify a custom
PMU config file.

src/data.rs

@@ -4,18 +4,6 @@ pub mod constants;
 pub mod cpu_utilization;
 pub mod diskstats;
 pub mod flamegraphs;
-cfg_if::cfg_if! {
-    if #[cfg(target_arch = "aarch64")] {
-        pub mod grv_perf_events;
-    } else if #[cfg(any(target_arch = "x86", target_arch = "x86_64"))] {
-        pub mod intel_perf_events;
-        pub mod intel_icelake_perf_events;
-        pub mod intel_sapphire_rapids_perf_events;
-        pub mod amd_perf_events;
-        pub mod amd_genoa_perf_events;
-        pub mod amd_milan_perf_events;
-    }
-}
 pub mod interrupts;
 pub mod java_profile;
 pub mod kernel_config;

src/data/amd_genoa_ctrs.json

@@ -0,0 +1,20 @@
+[
+  {
+    "name": "stall_backend_pkc",
+    "nrs": [
+      {
+        "perf_type": "RAW",
+        "name": "Backend-Stalls",
+        "config": 4294975136
+      }
+    ],
+    "drs": [
+      {
+        "perf_type": "RAW",
+        "name": "Cycles",
+        "config": 118
+      }
+    ],
+    "scale": 167
+  }
+]

src/data/amd_milan_ctrs.json

@@ -0,0 +1,25 @@
+[
+  {
+    "name": "stall_backend_pkc",
+    "nrs": [
+      {
+        "perf_type": "RAW",
+        "name": "Backend-Stalls-1",
+        "config": 63406
+      },
+      {
+        "perf_type": "RAW",
+        "name": "Backend-Stalls-2",
+        "config": 10159
+      }
+    ],
+    "drs": [
+      {
+        "perf_type": "RAW",
+        "name": "Cycles",
+        "config": 118
+      }
+    ],
+    "scale": 1000
+  }
+]