MIPS: rename rollback_handler with skipover_handler

Recently the rollback region has been changed into an
idle interrupt region [1]. This patch make the appropriate
changes renaming functions and macro, to reflect the change.

[1] https://lore.kernel.org/linux-mips/20250403161143.361461-2-marco.crivellari@suse.com/

Signed-off-by: Marco Crivellari <marco.crivellari@suse.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

Author: DispatchCode

arch/mips/include/asm/idle.h

@@ -9,7 +9,7 @@ extern void (*cpu_wait)(void);
 extern asmlinkage void r4k_wait(void);
 extern void r4k_wait_irqoff(void);
 
-static inline int using_rollback_handler(void)
+static inline int using_skipover_handler(void)
 {
 	return cpu_wait == r4k_wait;
 }

arch/mips/kernel/genex.S

@@ -116,7 +116,7 @@ LEAF(r4k_wait)
 	 * If an interrupt lands here, before going idle on the next
 	 * instruction, we must *NOT* go idle since the interrupt could
 	 * have set TIF_NEED_RESCHED or caused a timer to need resched.
-	 * Fall through -- see rollback_handler below -- and have the
+	 * Fall through -- see skipover_handler below -- and have the
 	 * idle loop take care of things.
 	 */
 1:	.fill	0
@@ -139,8 +139,8 @@ r4k_wait_exit:
 	END(r4k_wait)
 	.previous
 
-	.macro	BUILD_ROLLBACK_PROLOGUE handler
-	FEXPORT(rollback_\handler)
+	.macro	BUILD_SKIPOVER_PROLOGUE handler
+	FEXPORT(skipover_\handler)
 	.set	push
 	.set	noat
 	MFC0	k0, CP0_EPC
@@ -156,7 +156,7 @@ r4k_wait_exit:
 	.endm
 
 	.align	5
-BUILD_ROLLBACK_PROLOGUE handle_int
+BUILD_SKIPOVER_PROLOGUE handle_int
 NESTED(handle_int, PT_SIZE, sp)
 	.cfi_signal_frame
 #ifdef CONFIG_TRACE_IRQFLAGS
@@ -276,7 +276,7 @@ NESTED(except_vec_ejtag_debug, 0, sp)
  * This prototype is copied to ebase + n*IntCtl.VS and patched
  * to invoke the handler
  */
-BUILD_ROLLBACK_PROLOGUE except_vec_vi
+BUILD_SKIPOVER_PROLOGUE except_vec_vi
 NESTED(except_vec_vi, 0, sp)
 	SAVE_SOME docfi=1
 	SAVE_AT docfi=1

arch/mips/kernel/traps.c

@@ -77,7 +77,7 @@
 #include "access-helper.h"
 
 extern void check_wait(void);
-extern asmlinkage void rollback_handle_int(void);
+extern asmlinkage void skipover_handle_int(void);
 extern asmlinkage void handle_int(void);
 extern asmlinkage void handle_adel(void);
 extern asmlinkage void handle_ades(void);
@@ -2066,7 +2066,7 @@ void *set_vi_handler(int n, vi_handler_t addr)
 {
 	extern const u8 except_vec_vi[];
 	extern const u8 except_vec_vi_ori[], except_vec_vi_end[];
-	extern const u8 rollback_except_vec_vi[];
+	extern const u8 skipover_except_vec_vi[];
 	unsigned long handler;
 	unsigned long old_handler = vi_handlers[n];
 	int srssets = current_cpu_data.srsets;
@@ -2095,7 +2095,7 @@ void *set_vi_handler(int n, vi_handler_t addr)
 			change_c0_srsmap(0xf << n*4, 0 << n*4);
 	}
 
-	vec_start = using_rollback_handler() ? rollback_except_vec_vi :
+	vec_start = using_skipover_handler() ? skipover_except_vec_vi :
 					       except_vec_vi;
 #if defined(CONFIG_CPU_MICROMIPS) || defined(CONFIG_CPU_BIG_ENDIAN)
 	ori_offset = except_vec_vi_ori - vec_start + 2;
@@ -2426,8 +2426,8 @@ void __init trap_init(void)
 	if (board_be_init)
 		board_be_init();
 
-	set_except_vector(EXCCODE_INT, using_rollback_handler() ?
-					rollback_handle_int : handle_int);
+	set_except_vector(EXCCODE_INT, using_skipover_handler() ?
+					skipover_handle_int : handle_int);
 	set_except_vector(EXCCODE_MOD, handle_tlbm);
 	set_except_vector(EXCCODE_TLBL, handle_tlbl);
 	set_except_vector(EXCCODE_TLBS, handle_tlbs);