marlin: add property to enable/disable crash on RCU stalls

Bug: 34991231 Test: setprop on marlin Change-Id: Ice4766cd30d8741613fa55718b1d5bfc73026d09
LineageOS · Mar 8, 2017 · 5659f0b · 5659f0b
1 parent 5460ba7
commit 5659f0b
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Showing 5 changed files with 10 additions and 1 deletion.
diff --git a/device-common.mk b/device-common.mk
@@ -382,7 +382,8 @@ PRODUCT_COPY_FILES += \
 
 # Subsystem ramdump
 PRODUCT_PROPERTY_OVERRIDES += \
-    persist.sys.ssr.enable_ramdumps=1
+    persist.sys.ssr.enable_ramdumps=1 \
+    persist.sys.crash_rcu=true
 else
 PRODUCT_COPY_FILES += \
     device/google/marlin/init.common.diag.rc.user:$(INIT_COMMON_DIAG_RC)

diff --git a/init.common.diag.rc.userdebug b/init.common.diag.rc.userdebug
@@ -112,3 +112,8 @@ service cnss_diag_txt /system/bin/cnss_diag -s -f -m /data/cnss_diag/cnss_diag.c
     disabled
     oneshot
 
+on property:persist.sys.crash_rcu=true
+    write /proc/sys/kernel/panic_on_rcu_stall 1
+
+on property:persist.sys.crash_rcu=false
+    write /proc/sys/kernel/panic_on_rcu_stall 0
diff --git a/sepolicy/platform_app.te b/sepolicy/platform_app.te
@@ -10,4 +10,5 @@ userdebug_or_eng(`
    dontaudit platform_app proc_sysrq:file getattr;
    dontaudit platform_app proc_iomem:file getattr;
    set_prop(platform_app, cnss_diag_prop);
+   set_prop(platform_app, ramdump_prop);
 ')
diff --git a/sepolicy/property.te b/sepolicy/property.te
@@ -6,3 +6,4 @@ type mid_prop, property_type;
 type ssr_prop, property_type;
 type cnss_diag_prop, property_type;
 type thermal_prop, property_type;
+type ramdump_prop, property_type;
diff --git a/sepolicy/property_contexts b/sepolicy/property_contexts
@@ -9,5 +9,6 @@ ro.boot.hardware.sku       u:object_r:hw_sku_prop:s0
 ro.boot.mid                u:object_r:mid_prop:s0
 debug.ssrdump              u:object_r:ssr_prop:s0
 persist.sys.cnss.          u:object_r:cnss_diag_prop:s0
+persist.sys.crash_rcu      u:object_r:ramdump_prop:s0
 sys.qcom.thermalcfg        u:object_r:thermal_prop:s0
 ctl.thermal-engine         u:object_r:thermal_prop:s0