Merge pull request #216 from hamadmarri/5.15.tt-fork

Add tasks' load accountings and statistics.

include/linux/sched/sysctl.h

@@ -30,6 +30,7 @@ extern unsigned int sysctl_sched_child_runs_first;
 
 #ifdef CONFIG_TT_SCHED
 extern unsigned int tt_max_lifetime;
+extern int tt_rt_prio;
 #endif
 
 enum sched_tunable_scaling {

init/Kconfig

@@ -109,6 +109,14 @@ config TT_SCHED
 	bool "TT Scheduler"
 	default y
 
+config TT_ACCOUNTING_STATS
+	bool "TT include all accounting and statistics"
+	depends on TT_SCHED
+	default y
+	help
+	  This will include all CFS tasks' load accounting and statistics.
+	  If you are using 'performance' governor and do not depend/care
+	  about tasks statistics, then choose N. Otherwise say Y.
 
 menu "General setup"
 
@@ -821,8 +829,7 @@ menu "Scheduler features"
 
 config UCLAMP_TASK
 	bool "Enable utilization clamping for RT/FAIR tasks"
-	depends on CPU_FREQ_GOV_SCHEDUTIL
-	depends on !TT_SCHED
+	depends on CPU_FREQ_GOV_SCHEDUTIL && TT_ACCOUNTING_STATS
 	help
 	  This feature enables the scheduler to track the clamped utilization
 	  of each CPU based on RUNNABLE tasks scheduled on that CPU.

kernel/Kconfig.hz

@@ -47,27 +47,12 @@ choice
 	 on desktops with great smoothness without increasing CPU power
 	 consumption and sacrificing the battery life on laptops.
 
-	config HZ_833
-		bool "833 HZ"
-	help
-	 833 Hz is the TT alternative to 1000 Hz. Choose 833 Hz
-	 if you want a balance between latency and performance.
-
 	config HZ_1000
 		bool "1000 HZ"
 	help
 	 1000 Hz is the preferred choice for desktop systems and other
 	 systems requiring fast interactive responses to events.
 
-	config HZ_1666
-		bool "1666 HZ"
-	help
-	 1666 Hz is for very high latency bound systems. Choose 1666 Hz
-	 if you don't care about overall throughput or performance, but
-	 you care more about latency (some realtime applications) require
-	 low latency. The response and interactive processes with 1666 Hz
-	 feel much snappier.
-
 endchoice
 
 config HZ
@@ -76,9 +61,7 @@ config HZ
 	default 250 if HZ_250
 	default 300 if HZ_300
 	default 500 if HZ_500
-	default 833 if HZ_833
 	default 1000 if HZ_1000
-	default 1666 if HZ_1666
 
 config SCHED_HRTICK
 	def_bool HIGH_RES_TIMERS