1 files changed, 0 insertions, 93 deletions
diff --git a/arch/x86/include/asm/resctrl_sched.h b/arch/x86/include/asm/resctrl_sched.h
deleted file mode 100644
index f6b7fe2833cc..000000000000
--- a/arch/x86/include/asm/resctrl_sched.h
+++ /dev/null
@@ -1,93 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_X86_RESCTRL_SCHED_H
-#define _ASM_X86_RESCTRL_SCHED_H
-
-#ifdef CONFIG_X86_CPU_RESCTRL
-
-#include <linux/sched.h>
-#include <linux/jump_label.h>
-
-#define IA32_PQR_ASSOC	0x0c8f
-
-/**
- * struct resctrl_pqr_state - State cache for the PQR MSR
- * @cur_rmid:		The cached Resource Monitoring ID
- * @cur_closid:	The cached Class Of Service ID
- * @default_rmid:	The user assigned Resource Monitoring ID
- * @default_closid:	The user assigned cached Class Of Service ID
- *
- * The upper 32 bits of IA32_PQR_ASSOC contain closid and the
- * lower 10 bits rmid. The update to IA32_PQR_ASSOC always
- * contains both parts, so we need to cache them. This also
- * stores the user configured per cpu CLOSID and RMID.
- *
- * The cache also helps to avoid pointless updates if the value does
- * not change.
- */
-struct resctrl_pqr_state {
-	u32			cur_rmid;
-	u32			cur_closid;
-	u32			default_rmid;
-	u32			default_closid;
-};
-
-DECLARE_PER_CPU(struct resctrl_pqr_state, pqr_state);
-
-DECLARE_STATIC_KEY_FALSE(rdt_enable_key);
-DECLARE_STATIC_KEY_FALSE(rdt_alloc_enable_key);
-DECLARE_STATIC_KEY_FALSE(rdt_mon_enable_key);
-
-/*
- * __resctrl_sched_in() - Writes the task's CLOSid/RMID to IA32_PQR_MSR
- *
- * Following considerations are made so that this has minimal impact
- * on scheduler hot path:
- * - This will stay as no-op unless we are running on an Intel SKU
- *   which supports resource control or monitoring and we enable by
- *   mounting the resctrl file system.
- * - Caches the per cpu CLOSid/RMID values and does the MSR write only
- *   when a task with a different CLOSid/RMID is scheduled in.
- * - We allocate RMIDs/CLOSids globally in order to keep this as
- *   simple as possible.
- * Must be called with preemption disabled.
- */
-static void __resctrl_sched_in(void)
-{
-	struct resctrl_pqr_state *state = this_cpu_ptr(&pqr_state);
-	u32 closid = state->default_closid;
-	u32 rmid = state->default_rmid;
-
-	/*
-	 * If this task has a closid/rmid assigned, use it.
-	 * Else use the closid/rmid assigned to this cpu.
-	 */
-	if (static_branch_likely(&rdt_alloc_enable_key)) {
-		if (current->closid)
-			closid = current->closid;
-	}
-
-	if (static_branch_likely(&rdt_mon_enable_key)) {
-		if (current->rmid)
-			rmid = current->rmid;
-	}
-
-	if (closid != state->cur_closid || rmid != state->cur_rmid) {
-		state->cur_closid = closid;
-		state->cur_rmid = rmid;
-		wrmsr(IA32_PQR_ASSOC, rmid, closid);
-	}
-}
-
-static inline void resctrl_sched_in(void)
-{
-	if (static_branch_likely(&rdt_enable_key))
-		__resctrl_sched_in();
-}
-
-#else
-
-static inline void resctrl_sched_in(void) {}
-
-#endif /* CONFIG_X86_CPU_RESCTRL */
-
-#endif /* _ASM_X86_RESCTRL_SCHED_H */