修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/arch/powerpc/platforms/powernv/memtrace.c
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@@ -1,11 +1,7 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Copyright (C) IBM Corporation, 2014, 2017
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  * Anton Blanchard, Rashmica Gupta.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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  */
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 #define pr_fmt(fmt) "memtrace: " fmt
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@@ -20,6 +16,7 @@
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 #include <linux/slab.h>
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 #include <linux/memory.h>
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 #include <linux/memory_hotplug.h>
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+#include <linux/numa.h>
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 #include <asm/machdep.h>
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 #include <asm/debugfs.h>
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22
 
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@@ -91,23 +88,23 @@
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 /* called with device_hotplug_lock held */
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 static bool memtrace_offline_pages(u32 nid, u64 start_pfn, u64 nr_pages)
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 {
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-	u64 end_pfn = start_pfn + nr_pages - 1;
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+	const unsigned long start = PFN_PHYS(start_pfn);
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+	const unsigned long size = PFN_PHYS(nr_pages);
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-	if (walk_memory_range(start_pfn, end_pfn, NULL,
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-	    check_memblock_online))
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+	if (walk_memory_blocks(start, size, NULL, check_memblock_online))
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 		return false;
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-	walk_memory_range(start_pfn, end_pfn, (void *)MEM_GOING_OFFLINE,
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-			  change_memblock_state);
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+	walk_memory_blocks(start, size, (void *)MEM_GOING_OFFLINE,
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+			   change_memblock_state);
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 	if (offline_pages(start_pfn, nr_pages)) {
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-		walk_memory_range(start_pfn, end_pfn, (void *)MEM_ONLINE,
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-				  change_memblock_state);
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+		walk_memory_blocks(start, size, (void *)MEM_ONLINE,
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+				   change_memblock_state);
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 		return false;
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 	}
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-	walk_memory_range(start_pfn, end_pfn, (void *)MEM_OFFLINE,
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-			  change_memblock_state);
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+	walk_memory_blocks(start, size, (void *)MEM_OFFLINE,
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+			   change_memblock_state);
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 	return true;
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@@ -213,11 +210,6 @@
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 		snprintf(ent->name, 16, "%08x", ent->nid);
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 		dir = debugfs_create_dir(ent->name, memtrace_debugfs_dir);
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-		if (!dir) {
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-			pr_err("Failed to create debugfs directory for node %d\n",
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-				ent->nid);
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-			return -1;
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-		}
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 		ent->dir = dir;
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 		debugfs_create_file("trace", 0400, dir, ent, &memtrace_fops);
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@@ -246,7 +238,7 @@
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 		ent = &memtrace_array[i];
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 		/* We have onlined this chunk previously */
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-		if (ent->nid == -1)
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+		if (ent->nid == NUMA_NO_NODE)
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 			continue;
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 		/* Remove from io mappings */
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@@ -255,24 +247,17 @@
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 			ent->mem = 0;
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 		}
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-		if (add_memory(ent->nid, ent->start, ent->size)) {
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+		if (add_memory(ent->nid, ent->start, ent->size, MHP_NONE)) {
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 			pr_err("Failed to add trace memory to node %d\n",
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 				ent->nid);
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 			ret += 1;
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 			continue;
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 		}
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-		/*
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-		 * If kernel isn't compiled with the auto online option
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-		 * we need to online the memory ourselves.
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-		 */
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-		if (!memhp_auto_online) {
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-			lock_device_hotplug();
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-			walk_memory_range(PFN_DOWN(ent->start),
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-					  PFN_UP(ent->start + ent->size - 1),
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-					  NULL, online_mem_block);
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-			unlock_device_hotplug();
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-		}
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+		lock_device_hotplug();
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+		walk_memory_blocks(ent->start, ent->size, NULL,
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+				   online_mem_block);
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+		unlock_device_hotplug();
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 		/*
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 		 * Memory was added successfully so clean up references to it
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@@ -280,7 +265,7 @@
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 		 */
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 		debugfs_remove_recursive(ent->dir);
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 		pr_info("Added trace memory back to node %d\n", ent->nid);
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-		ent->size = ent->start = ent->nid = -1;
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+		ent->size = ent->start = ent->nid = NUMA_NO_NODE;
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 	}
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 	if (ret)
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 		return ret;
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@@ -348,8 +333,6 @@
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 {
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 	memtrace_debugfs_dir = debugfs_create_dir("memtrace",
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 						  powerpc_debugfs_root);
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-	if (!memtrace_debugfs_dir)
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-		return -1;
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 	debugfs_create_file("enable", 0600, memtrace_debugfs_dir,
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 			    NULL, &memtrace_init_fops);