add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/alpha/mm/init.c
..
..
@@ -19,12 +19,11 @@
19
19
 #include <linux/mm.h>
20
20
 #include <linux/swap.h>
21
21
 #include <linux/init.h>
22
-#include <linux/bootmem.h> /* max_low_pfn */
22
+#include <linux/memblock.h> /* max_low_pfn */
23
23
 #include <linux/vmalloc.h>
24
24
 #include <linux/gfp.h>
25
25
 
26
26
 #include <linux/uaccess.h>
27
-#include <asm/pgtable.h>
28
27
 #include <asm/pgalloc.h>
29
28
 #include <asm/hwrpb.h>
30
29
 #include <asm/dma.h>
..
..
@@ -146,6 +145,8 @@
146
145
 {
147
146
 	struct crb_struct * crb;
148
147
 	pgd_t *pgd;
148
+	p4d_t *p4d;
149
+	pud_t *pud;
149
150
 	pmd_t *pmd;
150
151
 	void *two_pages;
151
152
 
..
..
@@ -184,8 +185,10 @@
184
185
 	memset(two_pages, 0, 2*PAGE_SIZE);
185
186
 
186
187
 	pgd = pgd_offset_k(VMALLOC_START);
187
-	pgd_set(pgd, (pmd_t *)two_pages);
188
-	pmd = pmd_offset(pgd, VMALLOC_START);
188
+	p4d = p4d_offset(pgd, VMALLOC_START);
189
+	pud = pud_offset(p4d, VMALLOC_START);
190
+	pud_set(pud, (pmd_t *)two_pages);
191
+	pmd = pmd_offset(pud, VMALLOC_START);
189
192
 	pmd_set(pmd, (pte_t *)(two_pages + PAGE_SIZE));
190
193
 
191
194
 	if (alpha_using_srm) {
..
..
@@ -214,9 +217,9 @@
214
217
 				/* Newer consoles (especially on larger
215
218
 				   systems) may require more pages of
216
219
 				   PTEs. Grab additional pages as needed. */
217
-				if (pmd != pmd_offset(pgd, vaddr)) {
220
+				if (pmd != pmd_offset(pud, vaddr)) {
218
221
 					memset(kernel_end, 0, PAGE_SIZE);
219
-					pmd = pmd_offset(pgd, vaddr);
222
+					pmd = pmd_offset(pud, vaddr);
220
223
 					pmd_set(pmd, (pte_t *)kernel_end);
221
224
 					kernel_end += PAGE_SIZE;
222
225
 				}
..
..
@@ -239,21 +242,17 @@
239
242
  */
240
243
 void __init paging_init(void)
241
244
 {
242
-	unsigned long zones_size[MAX_NR_ZONES] = {0, };
243
-	unsigned long dma_pfn, high_pfn;
245
+	unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, };
246
+	unsigned long dma_pfn;
244
247
 
245
248
 	dma_pfn = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
246
-	high_pfn = max_pfn = max_low_pfn;
249
+	max_pfn = max_low_pfn;
247
250
 
248
-	if (dma_pfn >= high_pfn)
249
-		zones_size[ZONE_DMA] = high_pfn;
250
-	else {
251
-		zones_size[ZONE_DMA] = dma_pfn;
252
-		zones_size[ZONE_NORMAL] = high_pfn - dma_pfn;
253
-	}
251
+	max_zone_pfn[ZONE_DMA] = dma_pfn;
252
+	max_zone_pfn[ZONE_NORMAL] = max_pfn;
254
253
 
255
254
 	/* Initialize mem_map[].  */
256
-	free_area_init(zones_size);
255
+	free_area_init(max_zone_pfn);
257
256
 
258
257
 	/* Initialize the kernel's ZERO_PGE. */
259
258
 	memset((void *)ZERO_PGE, 0, PAGE_SIZE);
..
..
@@ -282,20 +281,6 @@
282
281
 {
283
282
 	set_max_mapnr(max_low_pfn);
284
283
 	high_memory = (void *) __va(max_low_pfn * PAGE_SIZE);
285
-	free_all_bootmem();
284
+	memblock_free_all();
286
285
 	mem_init_print_info(NULL);
287
286
 }
288
-
289
-void
290
-free_initmem(void)
291
-{
292
-	free_initmem_default(-1);
293
-}
294
-
295
-#ifdef CONFIG_BLK_DEV_INITRD
296
-void
297
-free_initrd_mem(unsigned long start, unsigned long end)
298
-{
299
-	free_reserved_area((void *)start, (void *)end, -1, "initrd");
300
-}
301
-#endif