aboutsummaryrefslogtreecommitdiffstats
path: root/arch/tile/mm/init.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/tile/mm/init.c')
-rw-r--r--arch/tile/mm/init.c99
1 files changed, 51 insertions, 48 deletions
diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c
index 125ac53b60fc..d89c9eacd162 100644
--- a/arch/tile/mm/init.c
+++ b/arch/tile/mm/init.c
@@ -67,7 +67,9 @@
#define clear_pgd(pmdptr) (*(pmdptr) = hv_pte(0))
+#ifndef __tilegx__
unsigned long VMALLOC_RESERVE = CONFIG_VMALLOC_RESERVE;
+#endif
DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
@@ -282,9 +284,9 @@ static pgprot_t __init init_pgprot(ulong address)
/*
* Everything else that isn't data or bss is heap, so mark it
* with the initial heap home (hash-for-home, or this cpu). This
- * includes any addresses after the loaded image; any address before
- * _einittext (since we already captured the case of text before
- * _sinittext); and any init-data pages.
+ * includes any addresses after the loaded image and any address before
+ * _einitdata, since we already captured the case of text before
+ * _sinittext, and __pa(einittext) is approximately __pa(sinitdata).
*
* All the LOWMEM pages that we mark this way will get their
* struct page homecache properly marked later, in set_page_homes().
@@ -292,9 +294,7 @@ static pgprot_t __init init_pgprot(ulong address)
* homes, but with a zero free_time we don't have to actually
* do a flush action the first time we use them, either.
*/
- if (address >= (ulong) _end || address < (ulong) _sdata ||
- (address >= (ulong) _sinitdata &&
- address < (ulong) _einitdata))
+ if (address >= (ulong) _end || address < (ulong) _einitdata)
return construct_pgprot(PAGE_KERNEL, initial_heap_home());
#if CHIP_HAS_CBOX_HOME_MAP()
@@ -304,35 +304,38 @@ static pgprot_t __init init_pgprot(ulong address)
#endif
/*
+ * Make the w1data homed like heap to start with, to avoid
+ * making it part of the page-striped data area when we're just
+ * going to convert it to read-only soon anyway.
+ */
+ if (address >= (ulong)__w1data_begin && address < (ulong)__w1data_end)
+ return construct_pgprot(PAGE_KERNEL, initial_heap_home());
+
+ /*
* Otherwise we just hand out consecutive cpus. To avoid
* requiring this function to hold state, we just walk forward from
* _sdata by PAGE_SIZE, skipping the readonly and init data, to reach
* the requested address, while walking cpu home around kdata_mask.
* This is typically no more than a dozen or so iterations.
*/
- BUG_ON(_einitdata != __bss_start);
- for (page = (ulong)_sdata, cpu = NR_CPUS; ; ) {
- cpu = cpumask_next(cpu, &kdata_mask);
- if (cpu == NR_CPUS)
- cpu = cpumask_first(&kdata_mask);
- if (page >= address)
- break;
- page += PAGE_SIZE;
- if (page == (ulong)__start_rodata)
- page = (ulong)__end_rodata;
- if (page == (ulong)&init_thread_union)
- page += THREAD_SIZE;
- if (page == (ulong)_sinitdata)
- page = (ulong)_einitdata;
+ page = (((ulong)__w1data_end) + PAGE_SIZE - 1) & PAGE_MASK;
+ BUG_ON(address < page || address >= (ulong)_end);
+ cpu = cpumask_first(&kdata_mask);
+ for (; page < address; page += PAGE_SIZE) {
+ if (page >= (ulong)&init_thread_union &&
+ page < (ulong)&init_thread_union + THREAD_SIZE)
+ continue;
if (page == (ulong)empty_zero_page)
- page += PAGE_SIZE;
+ continue;
#ifndef __tilegx__
#if !ATOMIC_LOCKS_FOUND_VIA_TABLE()
if (page == (ulong)atomic_locks)
- page += PAGE_SIZE;
+ continue;
#endif
#endif
-
+ cpu = cpumask_next(cpu, &kdata_mask);
+ if (cpu == NR_CPUS)
+ cpu = cpumask_first(&kdata_mask);
}
return construct_pgprot(PAGE_KERNEL, cpu);
}
@@ -362,7 +365,7 @@ static int __init setup_ktext(char *str)
/* If you have a leading "nocache", turn off ktext caching */
if (strncmp(str, "nocache", 7) == 0) {
ktext_nocache = 1;
- printk("ktext: disabling local caching of kernel text\n");
+ pr_info("ktext: disabling local caching of kernel text\n");
str += 7;
if (*str == ',')
++str;
@@ -374,20 +377,20 @@ static int __init setup_ktext(char *str)
/* Default setting on Tile64: use a huge page */
if (strcmp(str, "huge") == 0)
- printk("ktext: using one huge locally cached page\n");
+ pr_info("ktext: using one huge locally cached page\n");
/* Pay TLB cost but get no cache benefit: cache small pages locally */
else if (strcmp(str, "local") == 0) {
ktext_small = 1;
ktext_local = 1;
- printk("ktext: using small pages with local caching\n");
+ pr_info("ktext: using small pages with local caching\n");
}
/* Neighborhood cache ktext pages on all cpus. */
else if (strcmp(str, "all") == 0) {
ktext_small = 1;
ktext_all = 1;
- printk("ktext: using maximal caching neighborhood\n");
+ pr_info("ktext: using maximal caching neighborhood\n");
}
@@ -397,10 +400,10 @@ static int __init setup_ktext(char *str)
cpulist_scnprintf(buf, sizeof(buf), &ktext_mask);
if (cpumask_weight(&ktext_mask) > 1) {
ktext_small = 1;
- printk("ktext: using caching neighborhood %s "
+ pr_info("ktext: using caching neighborhood %s "
"with small pages\n", buf);
} else {
- printk("ktext: caching on cpu %s with one huge page\n",
+ pr_info("ktext: caching on cpu %s with one huge page\n",
buf);
}
}
@@ -470,19 +473,19 @@ static void __init kernel_physical_mapping_init(pgd_t *pgd_base)
#if CHIP_HAS_CBOX_HOME_MAP()
if (ktext_arg_seen && ktext_hash) {
- printk("warning: \"ktext\" boot argument ignored"
- " if \"kcache_hash\" sets up text hash-for-home\n");
+ pr_warning("warning: \"ktext\" boot argument ignored"
+ " if \"kcache_hash\" sets up text hash-for-home\n");
ktext_small = 0;
}
if (kdata_arg_seen && kdata_hash) {
- printk("warning: \"kdata\" boot argument ignored"
- " if \"kcache_hash\" sets up data hash-for-home\n");
+ pr_warning("warning: \"kdata\" boot argument ignored"
+ " if \"kcache_hash\" sets up data hash-for-home\n");
}
if (kdata_huge && !hash_default) {
- printk("warning: disabling \"kdata=huge\"; requires"
- " kcache_hash=all or =allbutstack\n");
+ pr_warning("warning: disabling \"kdata=huge\"; requires"
+ " kcache_hash=all or =allbutstack\n");
kdata_huge = 0;
}
#endif
@@ -556,11 +559,11 @@ static void __init kernel_physical_mapping_init(pgd_t *pgd_base)
if (!cpumask_empty(&bad)) {
char buf[NR_CPUS * 5];
cpulist_scnprintf(buf, sizeof(buf), &bad);
- printk("ktext: not using unavailable cpus %s\n", buf);
+ pr_info("ktext: not using unavailable cpus %s\n", buf);
}
if (cpumask_empty(&ktext_mask)) {
- printk("ktext: no valid cpus; caching on %d.\n",
- smp_processor_id());
+ pr_warning("ktext: no valid cpus; caching on %d.\n",
+ smp_processor_id());
cpumask_copy(&ktext_mask,
cpumask_of(smp_processor_id()));
}
@@ -737,17 +740,18 @@ static void __init set_non_bootmem_pages_init(void)
for_each_zone(z) {
unsigned long start, end;
int nid = z->zone_pgdat->node_id;
+ int idx = zone_idx(z);
start = z->zone_start_pfn;
if (start == 0)
continue; /* bootmem */
end = start + z->spanned_pages;
- if (zone_idx(z) == ZONE_NORMAL) {
+ if (idx == ZONE_NORMAL) {
BUG_ON(start != node_start_pfn[nid]);
start = node_free_pfn[nid];
}
#ifdef CONFIG_HIGHMEM
- if (zone_idx(z) == ZONE_HIGHMEM)
+ if (idx == ZONE_HIGHMEM)
totalhigh_pages += z->spanned_pages;
#endif
if (kdata_huge) {
@@ -841,9 +845,9 @@ void __init mem_init(void)
#ifdef CONFIG_HIGHMEM
/* check that fixmap and pkmap do not overlap */
if (PKMAP_ADDR(LAST_PKMAP-1) >= FIXADDR_START) {
- printk(KERN_ERR "fixmap and kmap areas overlap"
+ pr_err("fixmap and kmap areas overlap"
" - this will crash\n");
- printk(KERN_ERR "pkstart: %lxh pkend: %lxh fixstart %lxh\n",
+ pr_err("pkstart: %lxh pkend: %lxh fixstart %lxh\n",
PKMAP_BASE, PKMAP_ADDR(LAST_PKMAP-1),
FIXADDR_START);
BUG();
@@ -863,7 +867,7 @@ void __init mem_init(void)
initsize = (unsigned long)&_einittext - (unsigned long)&_sinittext;
initsize += (unsigned long)&_einitdata - (unsigned long)&_sinitdata;
- printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, %dk data, %dk init, %ldk highmem)\n",
+ pr_info("Memory: %luk/%luk available (%dk kernel code, %dk data, %dk init, %ldk highmem)\n",
(unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
num_physpages << (PAGE_SHIFT-10),
codesize >> 10,
@@ -968,7 +972,6 @@ static void mark_w1data_ro(void)
BUG_ON((addr & (PAGE_SIZE-1)) != 0);
for (; addr <= (unsigned long)__w1data_end - 1; addr += PAGE_SIZE) {
unsigned long pfn = kaddr_to_pfn((void *)addr);
- struct page *page = pfn_to_page(pfn);
pte_t *ptep = virt_to_pte(NULL, addr);
BUG_ON(pte_huge(*ptep)); /* not relevant for kdata_huge */
set_pte_at(&init_mm, addr, ptep, pfn_pte(pfn, PAGE_KERNEL_RO));
@@ -986,7 +989,7 @@ static long __write_once initfree = 1;
static int __init set_initfree(char *str)
{
strict_strtol(str, 0, &initfree);
- printk("initfree: %s free init pages\n", initfree ? "will" : "won't");
+ pr_info("initfree: %s free init pages\n", initfree ? "will" : "won't");
return 1;
}
__setup("initfree=", set_initfree);
@@ -996,8 +999,8 @@ static void free_init_pages(char *what, unsigned long begin, unsigned long end)
unsigned long addr = (unsigned long) begin;
if (kdata_huge && !initfree) {
- printk("Warning: ignoring initfree=0:"
- " incompatible with kdata=huge\n");
+ pr_warning("Warning: ignoring initfree=0:"
+ " incompatible with kdata=huge\n");
initfree = 1;
}
end = (end + PAGE_SIZE - 1) & PAGE_MASK;
@@ -1033,7 +1036,7 @@ static void free_init_pages(char *what, unsigned long begin, unsigned long end)
free_page(addr);
totalram_pages++;
}
- printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
+ pr_info("Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
}
void free_initmem(void)
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.