libcutils: Clarify schedboost_enabled()
Commit 795267d4c748 ("Removed cpusets/schedboost build time dependency.")
turned the cpusets and schedtune options into runtime
decisions.
However the kernel option which is mentioned in the
code comment (CONFIG_SCHEDTUNE) is very misleading
as it doesn't exist (CONFIG_SCHED_TUNE does exist)
and it doesn't describe the real functionality of
the method. schedboost_enabled() will still return
false if CONFIG_SCHED_TUNE is set in the kernel but
CONFIG_CGROUP_SCHEDTUNE is not.
So to clarify this, we need to change the comment
to reflect that CONFIG_CGROUP_SCHEDTUNE, which depends
on CONFIG_SCHED_TUNE, is required.
Signed-off-by: Alex Naidis <alex.naidis@linux.com>
diff --git a/libcutils/include/cutils/sched_policy.h b/libcutils/include/cutils/sched_policy.h
index 15391d9..cf8f5c3 100644
--- a/libcutils/include/cutils/sched_policy.h
+++ b/libcutils/include/cutils/sched_policy.h
@@ -34,7 +34,7 @@
* Check if Linux kernel enables SCHEDTUNE feature (only available in Android
* common kernel or Linaro LSK, not in mainline Linux as of v4.9)
*
- * Return value: 1 if Linux kernel CONFIG_SCHEDTUNE=y; 0 otherwise.
+ * Return value: 1 if Linux kernel CONFIG_CGROUP_SCHEDTUNE=y; 0 otherwise.
*/
extern bool schedboost_enabled();
diff --git a/libcutils/sched_policy.cpp b/libcutils/sched_policy.cpp
index 7e38535..4c303e6 100644
--- a/libcutils/sched_policy.cpp
+++ b/libcutils/sched_policy.cpp
@@ -136,7 +136,7 @@
/*
Similar to CONFIG_CPUSETS above, but with a different configuration
- CONFIG_SCHEDTUNE that's in Android common Linux kernel and Linaro
+ CONFIG_CGROUP_SCHEDTUNE that's in Android common Linux kernel and Linaro
Stable Kernel (LSK), but not in mainline Linux as of v4.9.
With runtime check using the following function, build time