x86/itmt: Convert "sysctl_sched_itmt_enabled" to boolean

JIRA: https://issues.redhat.com/browse/RHEL-53784

commit 2f6f726
Author: K Prateek Nayak <[email protected]>
Date:   Mon Dec 23 04:34:00 2024 +0000

    x86/itmt: Convert "sysctl_sched_itmt_enabled" to boolean

    In preparation to move "sysctl_sched_itmt_enabled" to debugfs, convert
    the unsigned int to bool since debugfs readily exposes boolean fops
    primitives (debugfs_read_file_bool, debugfs_write_file_bool) which can
    streamline the conversion.

    Since the current ctl_table initializes extra1 and extra2 to SYSCTL_ZERO
    and SYSCTL_ONE respectively, the value of "sysctl_sched_itmt_enabled"
    can only be 0 or 1 and this datatype conversion should not cause any
    functional changes.

    Signed-off-by: K Prateek Nayak <[email protected]>
    Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
    Reviewed-by: Tim Chen <[email protected]>
    Link: https://lore.kernel.org/r/[email protected]

Signed-off-by: David Arcari <[email protected]>

Author: darcari

arch/x86/include/asm/topology.h

@@ -245,7 +245,7 @@ extern bool x86_topology_update;
 #include <asm/percpu.h>
 
 DECLARE_PER_CPU_READ_MOSTLY(int, sched_core_priority);
-extern unsigned int __read_mostly sysctl_sched_itmt_enabled;
+extern bool __read_mostly sysctl_sched_itmt_enabled;
 
 /* Interface to set priority of a cpu */
 void sched_set_itmt_core_prio(int prio, int core_cpu);
@@ -258,7 +258,7 @@ void sched_clear_itmt_support(void);
 
 #else /* CONFIG_SCHED_MC_PRIO */
 
-#define sysctl_sched_itmt_enabled	0
+#define sysctl_sched_itmt_enabled	false
 static inline void sched_set_itmt_core_prio(int prio, int core_cpu)
 {
 }

arch/x86/kernel/itmt.c

@@ -36,7 +36,7 @@ static bool __read_mostly sched_itmt_capable;
  *
  * It can be set via /proc/sys/kernel/sched_itmt_enabled
  */
-unsigned int __read_mostly sysctl_sched_itmt_enabled;
+bool __read_mostly sysctl_sched_itmt_enabled;
 
 static int sched_itmt_update_handler(struct ctl_table *table, int write,
 				     void *buffer, size_t *lenp, loff_t *ppos)