Commit 4b00c116 authored by Brian Gerst's avatar Brian Gerst Committed by Ingo Molnar
Browse files

percpu: Remove __per_cpu_load 



__per_cpu_load is now always equal to __per_cpu_start.

Signed-off-by: default avatarBrian Gerst <brgerst@gmail.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Reviewed-by: default avatarArd Biesheuvel <ardb@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20250123190747.745588-15-brgerst@gmail.com
parent e23cff68

include/asm-generic/sections.h

+1 −1
Original line number Diff line number Diff line
@@ -39,7 +39,7 @@ extern char __init_begin[], __init_end[]; 
extern char _sinittext[], _einittext[];

extern char __start_ro_after_init[], __end_ro_after_init[];

extern char _end[];

extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];

extern char __per_cpu_start[], __per_cpu_end[];

extern char __kprobes_text_start[], __kprobes_text_end[];

extern char __entry_text_start[], __entry_text_end[];

extern char __start_rodata[], __end_rodata[];

include/asm-generic/vmlinux.lds.h

+0 −1
Original line number Diff line number Diff line
@@ -1084,7 +1084,6 @@ defined(CONFIG_AUTOFDO_CLANG) || defined(CONFIG_PROPELLER_CLANG) 
#define PERCPU_SECTION(cacheline)					\

	. = ALIGN(PAGE_SIZE);						\

	.data..percpu	: AT(ADDR(.data..percpu) - LOAD_OFFSET) {	\

		__per_cpu_load = .;					\

		PERCPU_INPUT(cacheline)					\

	}

mm/percpu.c

+2 −2
Original line number Diff line number Diff line
@@ -3071,7 +3071,7 @@ int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size, 
				continue;

			}

			/* copy and return the unused part */

			memcpy(ptr, __per_cpu_load, ai->static_size);

			memcpy(ptr, __per_cpu_start, ai->static_size);

			pcpu_fc_free(ptr + size_sum, ai->unit_size - size_sum);

		}

	}
@@ -3240,7 +3240,7 @@ int __init pcpu_page_first_chunk(size_t reserved_size, pcpu_fc_cpu_to_node_fn_t 
		flush_cache_vmap_early(unit_addr, unit_addr + ai->unit_size);



		/* copy static data */

		memcpy((void *)unit_addr, __per_cpu_load, ai->static_size);

		memcpy((void *)unit_addr, __per_cpu_start, ai->static_size);

	}



	/* we're ready, commit */