Update fence event path for kernel 4.10+
The sysfs path for controlling dma fence events changed yet again in
Linux 4.10, see kernel commit f54d1867005c3.
Test: adb shell atrace --list_categories | grep sync
Test: external/chromium-trace/systrace.py sync, check for dma_fence
events in trace.html's event list
Change-Id: I45905cf199d5de3d5679151f19f8aa693adea5e1
diff --git a/cmds/atrace/atrace.cpp b/cmds/atrace/atrace.cpp
index 53b3a00..39b3aac 100644
--- a/cmds/atrace/atrace.cpp
+++ b/cmds/atrace/atrace.cpp
@@ -192,10 +192,12 @@
{ REQ, "events/cpufreq_interactive/enable" },
} },
{ "sync", "Synchronization", 0, {
- // before linux kernel 4.9
+ // linux kernel < 4.9
{ OPT, "events/sync/enable" },
- // starting in linux kernel 4.9
+ // linux kernel == 4.9.x
{ OPT, "events/fence/enable" },
+ // linux kernel > 4.9
+ { OPT, "events/dma_fence/enable" },
} },
{ "workq", "Kernel Workqueues", 0, {
{ REQ, "events/workqueue/enable" },
diff --git a/cmds/atrace/atrace.rc b/cmds/atrace/atrace.rc
index a282424..66c9cc6 100644
--- a/cmds/atrace/atrace.rc
+++ b/cmds/atrace/atrace.rc
@@ -91,6 +91,8 @@
chmod 0666 /sys/kernel/tracing/events/sync/enable
chmod 0666 /sys/kernel/debug/tracing/events/fence/enable
chmod 0666 /sys/kernel/tracing/events/fence/enable
+ chmod 0666 /sys/kernel/debug/tracing/events/dma_fence/enable
+ chmod 0666 /sys/kernel/tracing/events/dma_fence/enable
chmod 0666 /sys/kernel/debug/tracing/events/kmem/rss_stat/enable
chmod 0666 /sys/kernel/tracing/events/kmem/rss_stat/enable
chmod 0666 /sys/kernel/debug/tracing/events/kmem/ion_heap_grow/enable