sched/core: Remove sd->*_idx

The sched domain per rq load index files also disappear from the
/proc/sys/kernel/sched_domain/cpuX/domainY directories.

Signed-off-by: Dietmar Eggemann <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Acked-by: Rik van Riel <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Morten Rasmussen <[email protected]>
Cc: Patrick Bellasi <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Quentin Perret <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Valentin Schneider <[email protected]>
Cc: Vincent Guittot <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

Author: deggeman

include/linux/sched/topology.h

@@ -84,11 +84,6 @@ struct sched_domain {
 	unsigned int busy_factor;	/* less balancing by factor if busy */
 	unsigned int imbalance_pct;	/* No balance until over watermark */
 	unsigned int cache_nice_tries;	/* Leave cache hot tasks for # tries */
-	unsigned int busy_idx;
-	unsigned int idle_idx;
-	unsigned int newidle_idx;
-	unsigned int wake_idx;
-	unsigned int forkexec_idx;
 
 	int nohz_idle;			/* NOHZ IDLE status */
 	int flags;			/* See SD_* */

kernel/sched/debug.c

@@ -251,25 +251,20 @@ set_table_entry(struct ctl_table *entry,
 static struct ctl_table *
 sd_alloc_ctl_domain_table(struct sched_domain *sd)
 {
-	struct ctl_table *table = sd_alloc_ctl_entry(14);
+	struct ctl_table *table = sd_alloc_ctl_entry(9);
 
 	if (table == NULL)
 		return NULL;
 
-	set_table_entry(&table[0],  "min_interval",	   &sd->min_interval,	     sizeof(long), 0644, proc_doulongvec_minmax);
-	set_table_entry(&table[1],  "max_interval",	   &sd->max_interval,	     sizeof(long), 0644, proc_doulongvec_minmax);
-	set_table_entry(&table[2],  "busy_idx",		   &sd->busy_idx,	     sizeof(int),  0644, proc_dointvec_minmax);
-	set_table_entry(&table[3],  "idle_idx",		   &sd->idle_idx,	     sizeof(int),  0644, proc_dointvec_minmax);
-	set_table_entry(&table[4],  "newidle_idx",	   &sd->newidle_idx,	     sizeof(int),  0644, proc_dointvec_minmax);
-	set_table_entry(&table[5],  "wake_idx",		   &sd->wake_idx,	     sizeof(int),  0644, proc_dointvec_minmax);
-	set_table_entry(&table[6],  "forkexec_idx",	   &sd->forkexec_idx,	     sizeof(int),  0644, proc_dointvec_minmax);
-	set_table_entry(&table[7],  "busy_factor",	   &sd->busy_factor,	     sizeof(int),  0644, proc_dointvec_minmax);
-	set_table_entry(&table[8],  "imbalance_pct",	   &sd->imbalance_pct,	     sizeof(int),  0644, proc_dointvec_minmax);
-	set_table_entry(&table[9],  "cache_nice_tries",	   &sd->cache_nice_tries,    sizeof(int),  0644, proc_dointvec_minmax);
-	set_table_entry(&table[10], "flags",		   &sd->flags,		     sizeof(int),  0644, proc_dointvec_minmax);
-	set_table_entry(&table[11], "max_newidle_lb_cost", &sd->max_newidle_lb_cost, sizeof(long), 0644, proc_doulongvec_minmax);
-	set_table_entry(&table[12], "name",		   sd->name,		CORENAME_MAX_SIZE, 0444, proc_dostring);
-	/* &table[13] is terminator */
+	set_table_entry(&table[0], "min_interval",	  &sd->min_interval,	    sizeof(long), 0644, proc_doulongvec_minmax);
+	set_table_entry(&table[1], "max_interval",	  &sd->max_interval,	    sizeof(long), 0644, proc_doulongvec_minmax);
+	set_table_entry(&table[2], "busy_factor",	  &sd->busy_factor,	    sizeof(int),  0644, proc_dointvec_minmax);
+	set_table_entry(&table[3], "imbalance_pct",	  &sd->imbalance_pct,	    sizeof(int),  0644, proc_dointvec_minmax);
+	set_table_entry(&table[4], "cache_nice_tries",	  &sd->cache_nice_tries,    sizeof(int),  0644, proc_dointvec_minmax);
+	set_table_entry(&table[5], "flags",		  &sd->flags,		    sizeof(int),  0644, proc_dointvec_minmax);
+	set_table_entry(&table[6], "max_newidle_lb_cost", &sd->max_newidle_lb_cost, sizeof(long), 0644, proc_doulongvec_minmax);
+	set_table_entry(&table[7], "name",		  sd->name,	       CORENAME_MAX_SIZE, 0444, proc_dostring);
+	/* &table[8] is terminator */
 
 	return table;
 }

kernel/sched/topology.c

@@ -1344,11 +1344,6 @@ sd_init(struct sched_domain_topology_level *tl,
 		.imbalance_pct		= 125,
 
 		.cache_nice_tries	= 0,
-		.busy_idx		= 0,
-		.idle_idx		= 0,
-		.newidle_idx		= 0,
-		.wake_idx		= 0,
-		.forkexec_idx		= 0,
 
 		.flags			= 1*SD_LOAD_BALANCE
 					| 1*SD_BALANCE_NEWIDLE
@@ -1400,13 +1395,10 @@ sd_init(struct sched_domain_topology_level *tl,
 	} else if (sd->flags & SD_SHARE_PKG_RESOURCES) {
 		sd->imbalance_pct = 117;
 		sd->cache_nice_tries = 1;
-		sd->busy_idx = 2;
 
 #ifdef CONFIG_NUMA
 	} else if (sd->flags & SD_NUMA) {
 		sd->cache_nice_tries = 2;
-		sd->busy_idx = 3;
-		sd->idle_idx = 2;
 
 		sd->flags &= ~SD_PREFER_SIBLING;
 		sd->flags |= SD_SERIALIZE;
@@ -1419,8 +1411,6 @@ sd_init(struct sched_domain_topology_level *tl,
 #endif
 	} else {
 		sd->cache_nice_tries = 1;
-		sd->busy_idx = 2;
-		sd->idle_idx = 1;
 	}
 
 	/*