disable cpu isolcpus

hc

2023-12-09 958e46acc8e900e8569dd467c1af9b8d2d019394

 kernel/arch/powerpc/kernel/trace/ftrace_32.S
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@@ -1,10 +1,6 @@
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 /*
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  * Split from entry_32.S
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * as published by the Free Software Foundation; either version
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- * 2 of the License, or (at your option) any later version.
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  */
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 #include <linux/magic.h>
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@@ -54,6 +50,7 @@
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 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
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 _GLOBAL(ftrace_graph_caller)
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+	addi	r5, r1, 48
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 	/* load r4 with local address */
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 	lwz	r4, 44(r1)
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 	subi	r4, r4, MCOUNT_INSN_SIZE