Introduce interrupts module for debug and trace
Interrupts module has following functions to perform:
1. Apply boot time configuration
- Create a new trace instance
- Enable required irq and irq_gia events in the
instance
- Apply required filters on the high frequency
events
- Set instance's trace buffer size
- Enable tracing
2. Sepolicy for every required access
3. Copy interrupts trace buffer to dumpsys whenever triggered
AVC denials:
avc: denied { search } for comm="dump_interrupts" name="radio" dev="dm-53" ino=373 scontext=u:r:dump_interrupts_traces:s0 tcontext=u:object_r:radio_vendor_data_file:s0 tclass=dir permissive=1
avc: denied { write } for comm="dump_interrupts" name="all_logs" dev="dm-53" ino=7808 scontext=u:r:dump_interrupts_traces:s0 tcontext=u:object_r:radio_vendor_data_file:s0 tclass=dir permissive=1
avc: denied { add_name } for comm="dump_interrupts" name="interrupts" scontext=u:r:dump_interrupts_traces:s0 tcontext=u:object_r:radio_vendor_data_file:s0 tclass=dir permissive=1
avc: denied { create } for comm="dump_interrupts" name="interrupts" scontext=u:r:dump_interrupts_traces:s0 tcontext=u:object_r:radio_vendor_data_file:s0 tclass=dir permissive=1
avc: denied { search } for comm="dump_interrupts" name="instances" dev="tracefs" ino=2151 scontext=u:r:dump_interrupts_traces:s0 tcontext=u:object_r:debugfs_tracing_instances:s0 tclass=dir permissive=1
avc: denied { search } for comm="dump_interrupts" name="radio" dev="dm-53" ino=373 scontext=u:r:dump_interrupts_traces:s0 tcontext=u:object_r:radio_vendor_data_file:s0 tclass=dir permissive=1
avc: denied { read } for comm="dump_interrupts" name="trace" dev="tracefs" ino=143409 scontext=u:r:dump_interrupts_traces:s0 tcontext=u:object_r:tracefs_instances_interrupts:s0 tclass=file permissive=1
avc: denied { open } for comm="dump_interrupts" path="/sys/kernel/tracing/instances/irq_gia_google/trace" dev="tracefs" ino=143409 scontext=u:r:dump_interrupts_traces:s0 tcontext=u:object_r:tracefs_instances_interrupts:s0 tclass=file permissive=1
avc: denied { create } for comm="dump_interrupts" name="interrupts_trace" scontext=u:r:dump_interrupts_traces:s0 tcontext=u:object_r:radio_vendor_data_file:s0 tclass=file permissive=1
avc: denied { write open } for comm="dump_interrupts" path="/data/vendor/radio/logs/always-on/all_logs/interrupts/interrupts_trace" dev="dm-53" ino=8102 scontext=u:r:dump_interrupts_traces:s0 tcontext=u:object_r:radio_vendor_data_file:s0 tclass=file permissive=1
avc: denied { getattr } for comm="dump_interrupts" path="/sys/kernel/tracing/instances/irq_gia_google/trace" dev="tracefs" ino=141578 scontext=u:r:dump_interrupts_traces:s0 tcontext=u:object_r:tracefs_instances_interrupts:s0 tclass=file permissive=1
avc: denied { getattr } for comm="dump_interrupts" path="/data/vendor/radio/logs/always-on/all_logs/interrupts/interrupts_trace" dev="dm-53" ino=7965 scontext=u:r:dump_interrupts_traces:s0 tcontext=u:object_r:radio_vendor_data_file:s0 tclass=file permissive=1
Flag: EXEMPT, add interrupts traces dump program to bugreport
Bug: 376124648
Test: Manually checked boot time trace configuration. Collected
`adb bugreport`. And checked interrupt traces are dumped
into and extracted out from the bugreport. More details
in the bug.
Change-Id: I08872a321fa9726b50a54aeb0a91ed63c0652a3a
diff --git a/interrupts/traces/dump_interrupts_traces.cpp b/interrupts/traces/dump_interrupts_traces.cpp
new file mode 100644
index 0000000..da747a3
--- /dev/null
+++ b/interrupts/traces/dump_interrupts_traces.cpp
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <dump/pixel_dump.h>
+#include <android-base/file.h>
+
+int main() {
+ std::string outputDir = concatenatePath(BUGREPORT_PACKING_DIR, "interrupts");
+ if (mkdir(outputDir.c_str(), 0777) == -1) {
+ printf("Unable to create folder: %s\n", outputDir.c_str());
+ return 0;
+ }
+
+ copyFile("/sys/kernel/tracing/instances/irq_gia_google/trace",
+ concatenatePath(outputDir.c_str(), "interrupts_trace").c_str());
+
+ return 0;
+}