Add support for new sched kernel tracepoint

This tracepoint gives systrace the means to display the reason
for uninterruptible sleep.

diff --git a/cmds/atrace/atrace.cpp b/cmds/atrace/atrace.cpp
index 3c9d899..decaded 100644 (file)
--- a/cmds/atrace/atrace.cpp
+++ b/cmds/atrace/atrace.cpp
@@ -96,6 +96,7 @@ static const TracingCategory k_categories[] = {
     { "sched",      "CPU Scheduling",   0, {
         { REQ,      "/sys/kernel/debug/tracing/events/sched/sched_switch/enable" },
         { REQ,      "/sys/kernel/debug/tracing/events/sched/sched_wakeup/enable" },
+        { OPT,      "/sys/kernel/debug/tracing/events/sched/sched_blocked_reason/enable" },
     } },
     { "irq",        "IRQ Events",   0, {
         { REQ,      "/sys/kernel/debug/tracing/events/irq/enable" },

diff --git a/cmds/atrace/atrace.rc b/cmds/atrace/atrace.rc
index cde9c37..3373192 100644 (file)
--- a/cmds/atrace/atrace.rc
+++ b/cmds/atrace/atrace.rc
@@ -12,6 +12,7 @@ on boot
     chown root shell /sys/kernel/debug/tracing/options/print-tgid
     chown root shell /sys/kernel/debug/tracing/events/sched/sched_switch/enable
     chown root shell /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable
+    chown root shell /sys/kernel/debug/tracing/events/sched/sched_blocked_reason/enable
     chown root shell /sys/kernel/debug/tracing/events/power/cpu_frequency/enable
     chown root shell /sys/kernel/debug/tracing/events/power/cpu_idle/enable
     chown root shell /sys/kernel/debug/tracing/events/power/clock_set_rate/enable
@@ -34,6 +35,7 @@ on boot
     chmod 0664 /sys/kernel/debug/tracing/options/print-tgid
     chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_switch/enable
     chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_wakeup/enable
+    chmod 0664 /sys/kernel/debug/tracing/events/sched/sched_blocked_reason/enable
     chmod 0664 /sys/kernel/debug/tracing/events/power/cpu_frequency/enable
     chmod 0664 /sys/kernel/debug/tracing/events/power/cpu_idle/enable
     chmod 0664 /sys/kernel/debug/tracing/events/power/clock_set_rate/enable