mm: move mem_init_print_info() to mm_init.c

mem_init_print_info() is only called from mm_core_init().

Move it close to the caller and make it static.

Link: https://lkml.kernel.org/r/20230321170513.2401534-12-rppt@kernel.org
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Doug Berger <opendmb@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

1 files changed, 53 insertions, 0 deletions

diff --git a/mm/mm_init.c b/mm/mm_init.c
index ff70da11e797..8adadf51bbd2 100644
--- a/mm/mm_init.c
+++ b/mm/mm_init.c
@@ -24,6 +24,8 @@
 #include <linux/page_ext.h>
 #include <linux/pti.h>
 #include <linux/pgtable.h>
+#include <linux/swap.h>
+#include <linux/cma.h>
 #include "internal.h"
 #include "shuffle.h"
 
@@ -2649,6 +2651,57 @@ static void __init report_meminit(void)
 		pr_info("mem auto-init: clearing system memory may take some time...\n");
 }
 
+static void __init mem_init_print_info(void)
+{
+	unsigned long physpages, codesize, datasize, rosize, bss_size;
+	unsigned long init_code_size, init_data_size;
+
+	physpages = get_num_physpages();
+	codesize = _etext - _stext;
+	datasize = _edata - _sdata;
+	rosize = __end_rodata - __start_rodata;
+	bss_size = __bss_stop - __bss_start;
+	init_data_size = __init_end - __init_begin;
+	init_code_size = _einittext - _sinittext;
+
+	/*
+	 * Detect special cases and adjust section sizes accordingly:
+	 * 1) .init.* may be embedded into .data sections
+	 * 2) .init.text.* may be out of [__init_begin, __init_end],
+	 *    please refer to arch/tile/kernel/vmlinux.lds.S.
+	 * 3) .rodata.* may be embedded into .text or .data sections.
+	 */
+#define adj_init_size(start, end, size, pos, adj) \
+	do { \
+		if (&start[0] <= &pos[0] && &pos[0] < &end[0] && size > adj) \
+			size -= adj; \
+	} while (0)
+
+	adj_init_size(__init_begin, __init_end, init_data_size,
+		     _sinittext, init_code_size);
+	adj_init_size(_stext, _etext, codesize, _sinittext, init_code_size);
+	adj_init_size(_sdata, _edata, datasize, __init_begin, init_data_size);
+	adj_init_size(_stext, _etext, codesize, __start_rodata, rosize);
+	adj_init_size(_sdata, _edata, datasize, __start_rodata, rosize);
+
+#undef	adj_init_size
+
+	pr_info("Memory: %luK/%luK available (%luK kernel code, %luK rwdata, %luK rodata, %luK init, %luK bss, %luK reserved, %luK cma-reserved"
+#ifdef	CONFIG_HIGHMEM
+		", %luK highmem"
+#endif
+		")\n",
+		K(nr_free_pages()), K(physpages),
+		codesize / SZ_1K, datasize / SZ_1K, rosize / SZ_1K,
+		(init_data_size + init_code_size) / SZ_1K, bss_size / SZ_1K,
+		K(physpages - totalram_pages() - totalcma_pages),
+		K(totalcma_pages)
+#ifdef	CONFIG_HIGHMEM
+		, K(totalhigh_pages())
+#endif
+		);
+}
+
 /*
  * Set up kernel memory allocators
  */