Fix parsing issues and add support for additional events to the Linux perf text file parser (#2286)

* Handle some parsing edge cases and add support for disk IO events

* Fix issues with previous change

* Add support for wakeup events

* Add support for old event format as well

* Add perfview event processing for process_exec

* Fix style issue

* Add test for sched:exec_process

* Add support for IRQ events

---------

Co-authored-by: Tom Ootjers <tomoot@ntdev.microsoft.com>
Co-authored-by: Dillon Caryl <dicaryl@microsoft.com>
Co-authored-by: dillon-caryl <dcaryl@hotmail.com>

Author: 4 people

src/LinuxTracing.Tests/EventParseTests.cs

@@ -6,6 +6,7 @@
 using System.Linq;
 using Xunit;
 using System.Linq.Expressions;
+using System;
 
 namespace LinuxTracingTests
 {
@@ -65,7 +66,7 @@ ScheduleSwitch[] switches
                     Assert.Equal(pids[i], linuxEvent.ProcessID);
                     Assert.Equal(tids[i], linuxEvent.ThreadID);
                     Assert.Equal(cpus[i], linuxEvent.CpuNumber);
-                    Assert.Equal(times[i], linuxEvent.TimeMSec);
+                    Assert.True(Math.Abs(times[i] - linuxEvent.TimeMSec) <= 0.0001);
                     Assert.Equal(timeProperties[i], linuxEvent.TimeProperty);
                     Assert.Equal(events[i], linuxEvent.EventName);
                     Assert.Equal(eventProperties[i], linuxEvent.EventProperty);
@@ -257,5 +258,56 @@ public void CornerCaseProcessNames()
                 eventKinds: null,
                 switches: null);
         }
+
+        [Fact]
+        public void DiskIoNoStacks()
+        {
+            string path = Constants.GetTestingPerfDumpPath("disk_io_no_stacks");
+            HeaderTest(path, blockedTime: false,
+                commands: new string[] { "fio", "swapper", "fio", "swapper" },
+                pids: new int[] { 236193, 0, 236193, 0 },
+                tids: new int[] { 236193, 0, 236193, 0 },
+                cpus: new int[] { 21, 12, 21, 12 },
+                times: new double[] { 1791.544, 1791.615, 1791.628, 1791.699 },
+                timeProperties: new int[] { 1, 1, 1, 1 },
+                events: new string[] { "block", "block", "block", "block" },
+                eventProperties: new string[] { "block_rq_issue: 259,76 R 4096 () 57622160 + 8 [fio] ffffffff8beead90 blk_mq_start_request ([kernel.kallsyms])", "block_rq_complete: 259,76 R () 57622160 + 8 [0] ffffffff8bee2b4c blk_update_request ([kernel.kallsyms])", "block_rq_issue: 259,76 R 4096 () 82612968 + 8 [fio] ffffffff8beead90 blk_mq_start_request ([kernel.kallsyms])", "block_rq_complete: 259,76 R () 82612968 + 8 [0] ffffffff8bee2b4c blk_update_request ([kernel.kallsyms])" },
+                eventKinds: new EventKind[] { EventKind.BlockRequestIssue, EventKind.BlockRequestComplete, EventKind.BlockRequestIssue, EventKind.BlockRequestComplete },
+                switches: null);
+        }
+
+        [Fact]
+        public void OneWakeup()
+        {
+            string path = Constants.GetTestingPerfDumpPath("one_wakeup");
+            HeaderTest(path, blockedTime: false,
+                commands: new string[] { "swapper", "swapper" },
+                pids: new int[] { 0, 0 },
+                tids: new int[] { 0, 0 },
+                cpus: new int[] { 9, 9 },
+                times: new double[] { 0.0, 0.0 },
+                timeProperties: new int[] { 1, 1 },
+                events: new string[] { "sched", "sched" },
+                eventProperties: new string[] { "sched_wakeup: comm=fio pid=243615 prio=120 target_cpu=031 ffffffff8bad311d ttwu_do_wakeup ([kernel.kallsyms])", "sched_wakeup: task fio:243615 [120] success=1 [031] ffffffff8bad311d ttwu_do_wakeup ([kernel.kallsyms])" },
+                eventKinds: new EventKind[] { EventKind.Wakeup, EventKind.Wakeup },
+                switches: null);
+        }
+
+        [Fact]
+        public void ExecProcess()
+        {
+            string path = Constants.GetTestingPerfDumpPath("exec_process");
+            HeaderTest(path, blockedTime: false,
+                commands: new string[] { "probe-bcache" },
+                pids: new int[] { 286053, 286053 },
+                tids: new int[] { 286053, 286053 },
+                cpus: new int[] { 3, 3 },
+                times: new double[] { 0.0, 0.0 },
+                timeProperties: new int[] { 1, 1 },
+                events: new string[] { "sched" },
+                eventProperties: new string[] { "sched_process_exec: filename=/lib/udev/probe-bcache pid=286053 old_pid=286053" },
+                eventKinds: new EventKind[] { EventKind.ProcessExec },
+                switches: null);
+        }
     }
 }

src/LinuxTracing.Tests/Sources/disk_io_no_stacks.perf.data.dump

@@ -0,0 +1,4 @@
+             fio 236193/236193 [021] 1.791544:          1    block:block_rq_issue: 259,76 R 4096 () 57622160 + 8 [fio] ffffffff8beead90 blk_mq_start_request ([kernel.kallsyms])
+         swapper     0/0     [012] 1.791615:          1 block:block_rq_complete: 259,76 R () 57622160 + 8 [0] ffffffff8bee2b4c blk_update_request ([kernel.kallsyms])
+             fio 236193/236193 [021] 1.791628:          1    block:block_rq_issue: 259,76 R 4096 () 82612968 + 8 [fio] ffffffff8beead90 blk_mq_start_request ([kernel.kallsyms])
+         swapper     0/0     [012] 1.791699:          1 block:block_rq_complete: 259,76 R () 82612968 + 8 [0] ffffffff8bee2b4c blk_update_request ([kernel.kallsyms])

src/LinuxTracing.Tests/Sources/exec_process.perf.data.dump

@@ -0,0 +1 @@
+probe-bcache 286053/286053 [003] 0.0:          1 sched:sched_process_exec: filename=/lib/udev/probe-bcache pid=286053 old_pid=286053

src/LinuxTracing.Tests/Sources/no_stack_frames.perf.data.dump

@@ -1,4 +1,4 @@
-comm  0/0  [000] 0.0: event: event_properties 
+comm  0/0  [000] 0.0: event/call-graph=no/: event_properties 
 
 comm  0/0  [000] 0.0: event: event_properties
 	address symbol (module)

src/LinuxTracing.Tests/Sources/one_wakeup.perf.data.dump

@@ -0,0 +1,2 @@
+         swapper     0/0     [009] 0.0:          1                sched:sched_wakeup: comm=fio pid=243615 prio=120 target_cpu=031 ffffffff8bad311d ttwu_do_wakeup ([kernel.kallsyms])
+         swapper     0/0     [009] 0.0:          1                sched:sched_wakeup: task fio:243615 [120] success=1 [031] ffffffff8bad311d ttwu_do_wakeup ([kernel.kallsyms])