x86/boot/e820: Create coherent API function names for E820 range operations

We have these three related functions:

 extern void e820_add_region(u64 start, u64 size, int type);
 extern u64  e820_update_range(u64 start, u64 size, unsigned old_type, unsigned new_type);
 extern u64  e820_remove_range(u64 start, u64 size, unsigned old_type, int checktype);

But it's not clear from the naming that they are 3 operations based around the
same 'memory range' concept. Rename them to better signal this, and move
the prototypes next to each other:

 extern void e820__range_add   (u64 start, u64 size, int type);
 extern u64  e820__range_update(u64 start, u64 size, unsigned old_type, unsigned new_type);
 extern u64  e820__range_remove(u64 start, u64 size, unsigned old_type, int checktype);

Note that this improved organization of the functions shows another problem that was easy
to miss before: sometimes the E820 entry type is 'int', sometimes 'unsigned int' - but this
will be fixed in a separate patch.

No change in functionality.

Cc: Alex Thorlton <athorlton@sgi.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Huang, Ying <ying.huang@intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul Jackson <pj@sgi.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/include/asm/e820/api.h b/arch/x86/include/asm/e820/api.h
index d4374ba26472692bb5f8593cd1fc2a38cdb02c00..1c3615825115050d3c307c607d8e14ea83b8ace8 100644 (file)
--- a/arch/x86/include/asm/e820/api.h
+++ b/arch/x86/include/asm/e820/api.h
@@ -10,11 +10,13 @@ extern unsigned long pci_mem_start;
 
 extern int  e820__mapped_any(u64 start, u64 end, unsigned type);
 extern int  e820__mapped_all(u64 start, u64 end, unsigned type);
-extern void e820_add_region(u64 start, u64 size, int type);
+
+extern void e820__range_add   (u64 start, u64 size, int type);
+extern u64  e820__range_update(u64 start, u64 size, unsigned old_type, unsigned new_type);
+extern u64  e820__range_remove(u64 start, u64 size, unsigned old_type, int checktype);
+
 extern void e820_print_map(char *who);
 extern int  e820__update_table(struct e820_entry *biosmap, int max_nr_map, u32 *pnr_map);
-extern u64  e820_update_range(u64 start, u64 size, unsigned old_type, unsigned new_type);
-extern u64  e820_remove_range(u64 start, u64 size, unsigned old_type, int checktype);
 extern void e820__update_table_print(void);
 extern void e820__setup_pci_gap(void);
 extern void e820__memory_setup_extended(u64 phys_addr, u32 data_len);

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 8590f4891760e387884cf6105a0a555b0041476c..31b350c6a3b1287ed8c94c9ee72581f0049d0b07 100644 (file)
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -1715,6 +1715,6 @@ int __acpi_release_global_lock(unsigned int *lock)
 
 void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size)
 {
-       e820_add_region(addr, size, E820_ACPI);
+       e820__range_add(addr, size, E820_ACPI);
        e820__update_table_print();
 }

diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index d027858a306eb8e2450ac57b5ec6b41a20de8b6a..8834856844353d12b94c11339cb02d471da98f1e 100644 (file)
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -311,7 +311,7 @@ void __init early_gart_iommu_check(void)
                        /* reserve it, so we can reuse it in second kernel */
                        pr_info("e820: reserve [mem %#010Lx-%#010Lx] for GART\n",
                                aper_base, aper_base + aper_size - 1);
-                       e820_add_region(aper_base, aper_size, E820_RESERVED);
+                       e820__range_add(aper_base, aper_size, E820_RESERVED);
                        e820__update_table_print();
                }
        }

diff --git a/arch/x86/kernel/cpu/mtrr/cleanup.c b/arch/x86/kernel/cpu/mtrr/cleanup.c
index e201401a7cedbacb84dda0d47f930e0fc85ed64f..244aaa988ecdb6cb1b13872b5832f54b8520e170 100644 (file)
--- a/arch/x86/kernel/cpu/mtrr/cleanup.c
+++ b/arch/x86/kernel/cpu/mtrr/cleanup.c
@@ -860,7 +860,7 @@ real_trim_memory(unsigned long start_pfn, unsigned long limit_pfn)
        trim_size <<= PAGE_SHIFT;
        trim_size -= trim_start;
 
-       return e820_update_range(trim_start, trim_size, E820_RAM, E820_RESERVED);
+       return e820__range_update(trim_start, trim_size, E820_RAM, E820_RESERVED);
 }
 
 /**

diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index cb25c7248656fb433cf3f60bf3c987b3bfe6e29d..f91901ab9263b31aa54c825e1394e84ca7df8e32 100644 (file)
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -125,7 +125,7 @@ int __init e820__mapped_all(u64 start, u64 end, unsigned type)
 /*
  * Add a memory region to the kernel E820 map.
  */
-static void __init __e820_add_region(struct e820_table *table, u64 start, u64 size, int type)
+static void __init __e820__range_add(struct e820_table *table, u64 start, u64 size, int type)
 {
        int x = table->nr_entries;
 
@@ -140,9 +140,9 @@ static void __init __e820_add_region(struct e820_table *table, u64 start, u64 si
        table->nr_entries++;
 }
 
-void __init e820_add_region(u64 start, u64 size, int type)
+void __init e820__range_add(u64 start, u64 size, int type)
 {
-       __e820_add_region(e820_table, start, size, type);
+       __e820__range_add(e820_table, start, size, type);
 }
 
 static void __init e820_print_type(u32 type)
@@ -380,7 +380,7 @@ static int __init __append_e820_table(struct e820_entry *biosmap, int nr_map)
                if (start > end && likely(size))
                        return -1;
 
-               e820_add_region(start, size, type);
+               e820__range_add(start, size, type);
 
                biosmap++;
                nr_map--;
@@ -407,7 +407,7 @@ static int __init append_e820_table(struct e820_entry *biosmap, int nr_map)
 }
 
 static u64 __init
-__e820_update_range(struct e820_table *table, u64 start, u64 size, unsigned old_type, unsigned new_type)
+__e820__range_update(struct e820_table *table, u64 start, u64 size, unsigned old_type, unsigned new_type)
 {
        u64 end;
        unsigned int i;
@@ -444,8 +444,8 @@ __e820_update_range(struct e820_table *table, u64 start, u64 size, unsigned old_
 
                /* New range is completely covered? */
                if (entry->addr < start && entry_end > end) {
-                       __e820_add_region(table, start, size, new_type);
-                       __e820_add_region(table, end, entry_end - end, entry->type);
+                       __e820__range_add(table, start, size, new_type);
+                       __e820__range_add(table, end, entry_end - end, entry->type);
                        entry->size = start - entry->addr;
                        real_updated_size += size;
                        continue;
@@ -457,7 +457,7 @@ __e820_update_range(struct e820_table *table, u64 start, u64 size, unsigned old_
                if (final_start >= final_end)
                        continue;
 
-               __e820_add_region(table, final_start, final_end - final_start, new_type);
+               __e820__range_add(table, final_start, final_end - final_start, new_type);
 
                real_updated_size += final_end - final_start;
 
@@ -474,18 +474,18 @@ __e820_update_range(struct e820_table *table, u64 start, u64 size, unsigned old_
        return real_updated_size;
 }
 
-u64 __init e820_update_range(u64 start, u64 size, unsigned old_type, unsigned new_type)
+u64 __init e820__range_update(u64 start, u64 size, unsigned old_type, unsigned new_type)
 {
-       return __e820_update_range(e820_table, start, size, old_type, new_type);
+       return __e820__range_update(e820_table, start, size, old_type, new_type);
 }
 
-static u64 __init e820_update_range_firmware(u64 start, u64 size, unsigned old_type, unsigned new_type)
+static u64 __init e820__range_update_firmware(u64 start, u64 size, unsigned old_type, unsigned new_type)
 {
-       return __e820_update_range(e820_table_firmware, start, size, old_type, new_type);
+       return __e820__range_update(e820_table_firmware, start, size, old_type, new_type);
 }
 
 /* Remove a range of memory from the E820 table: */
-u64 __init e820_remove_range(u64 start, u64 size, unsigned old_type, int checktype)
+u64 __init e820__range_remove(u64 start, u64 size, unsigned old_type, int checktype)
 {
        int i;
        u64 end;
@@ -519,7 +519,7 @@ u64 __init e820_remove_range(u64 start, u64 size, unsigned old_type, int checkty
 
                /* Is the new range completely covered? */
                if (entry->addr < start && entry_end > end) {
-                       e820_add_region(end, entry_end - end, entry->type);
+                       e820__range_add(end, entry_end - end, entry->type);
                        entry->size = start - entry->addr;
                        real_removed_size += size;
                        continue;
@@ -747,7 +747,7 @@ u64 __init e820__memblock_alloc_reserved(u64 size, u64 align)
 
        addr = __memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE);
        if (addr) {
-               e820_update_range_firmware(addr, size, E820_RAM, E820_RESERVED);
+               e820__range_update_firmware(addr, size, E820_RAM, E820_RESERVED);
                pr_info("e820: update e820_table_firmware for e820__memblock_alloc_reserved()\n");
                e820__update_table_firmware();
        }
@@ -846,7 +846,7 @@ static int __init parse_memopt(char *p)
        if (mem_size == 0)
                return -EINVAL;
 
-       e820_remove_range(mem_size, ULLONG_MAX - mem_size, E820_RAM, 1);
+       e820__range_remove(mem_size, ULLONG_MAX - mem_size, E820_RAM, 1);
 
        return 0;
 }
@@ -882,18 +882,18 @@ static int __init parse_memmap_one(char *p)
        userdef = 1;
        if (*p == '@') {
                start_at = memparse(p+1, &p);
-               e820_add_region(start_at, mem_size, E820_RAM);
+               e820__range_add(start_at, mem_size, E820_RAM);
        } else if (*p == '#') {
                start_at = memparse(p+1, &p);
-               e820_add_region(start_at, mem_size, E820_ACPI);
+               e820__range_add(start_at, mem_size, E820_ACPI);
        } else if (*p == '$') {
                start_at = memparse(p+1, &p);
-               e820_add_region(start_at, mem_size, E820_RESERVED);
+               e820__range_add(start_at, mem_size, E820_RESERVED);
        } else if (*p == '!') {
                start_at = memparse(p+1, &p);
-               e820_add_region(start_at, mem_size, E820_PRAM);
+               e820__range_add(start_at, mem_size, E820_PRAM);
        } else {
-               e820_remove_range(mem_size, ULLONG_MAX - mem_size, E820_RAM, 1);
+               e820__range_remove(mem_size, ULLONG_MAX - mem_size, E820_RAM, 1);
        }
 
        return *p == '\0' ? 0 : -EINVAL;
@@ -926,7 +926,7 @@ void __init e820_reserve_setup_data(void)
 
        while (pa_data) {
                data = early_memremap(pa_data, sizeof(*data));
-               e820_update_range(pa_data, sizeof(*data)+data->len, E820_RAM, E820_RESERVED_KERN);
+               e820__range_update(pa_data, sizeof(*data)+data->len, E820_RAM, E820_RESERVED_KERN);
                pa_data = data->next;
                early_memunmap(data, sizeof(*data));
        }
@@ -1146,8 +1146,8 @@ char *__init e820__memory_setup_default(void)
                }
 
                e820_table->nr_entries = 0;
-               e820_add_region(0, LOWMEMSIZE(), E820_RAM);
-               e820_add_region(HIGH_MEMORY, mem_size << 10, E820_RAM);
+               e820__range_add(0, LOWMEMSIZE(), E820_RAM);
+               e820__range_add(HIGH_MEMORY, mem_size << 10, E820_RAM);
        }
 
        return who;

diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 66722f4474010b4f7d3f31924dcb6b662897fc08..81a10ab15be906325fadb1aeacfb65fc058694f6 100644 (file)
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -546,7 +546,7 @@ intel_graphics_stolen(int num, int slot, int func,
               &base, &end);
 
        /* Mark this space as reserved */
-       e820_add_region(base, size, E820_RESERVED);
+       e820__range_add(base, size, E820_RESERVED);
        e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
 }
 

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 0fd7c0ef27160ebcab900739c7140532faac4425..2449df3c0044fcbaf9a699fc95a7e83a3c5b9c2f 100644 (file)
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -731,14 +731,14 @@ static void __init trim_bios_range(void)
         * since some BIOSes are known to corrupt low memory.  See the
         * Kconfig help text for X86_RESERVE_LOW.
         */
-       e820_update_range(0, PAGE_SIZE, E820_RAM, E820_RESERVED);
+       e820__range_update(0, PAGE_SIZE, E820_RAM, E820_RESERVED);
 
        /*
         * special case: Some BIOSen report the PC BIOS
         * area (640->1Mb) as ram even though it is not.
         * take them out.
         */
-       e820_remove_range(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1);
+       e820__range_remove(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1);
 
        e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
 }
@@ -760,8 +760,8 @@ static void __init e820_add_kernel_range(void)
                return;
 
        pr_warn(".text .data .bss are not marked as E820_RAM!\n");
-       e820_remove_range(start, size, E820_RAM, 0);
-       e820_add_region(start, size, E820_RAM);
+       e820__range_remove(start, size, E820_RAM, 0);
+       e820__range_add(start, size, E820_RAM);
 }
 
 static unsigned reserve_low = CONFIG_X86_RESERVE_LOW << 10;
@@ -1031,7 +1031,7 @@ void __init setup_arch(char **cmdline_p)
        trim_bios_range();
 #ifdef CONFIG_X86_32
        if (ppro_with_ram_bug()) {
-               e820_update_range(0x70000000ULL, 0x40000ULL, E820_RAM,
+               e820__range_update(0x70000000ULL, 0x40000ULL, E820_RAM,
                                  E820_RESERVED);
                e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
                printk(KERN_INFO "fixed physical RAM map:\n");

diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
index fc42e960456269f9e6a1fd01885b494bbf32a2c2..7aa6336862951a9529a9a33e9acebdf73e7f68b7 100644 (file)
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
@@ -1178,7 +1178,7 @@ static __init char *lguest_memory_setup(void)
         * The Linux bootloader header contains an "e820" memory map: the
         * Launcher populated the first entry with our memory limit.
         */
-       e820_add_region(boot_params.e820_table[0].addr,
+       e820__range_add(boot_params.e820_table[0].addr,
                          boot_params.e820_table[0].size,
                          boot_params.e820_table[0].type);
 

diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index 3a8f11ef6bfec8c86efd4b074e4497fd2330cdd7..d97c05ee96649b7a4e772da465cde8e0f1f20144 100644 (file)
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -165,7 +165,7 @@ static void __init do_add_efi_memmap(void)
                        e820_type = E820_RESERVED;
                        break;
                }
-               e820_add_region(start, size, e820_type);
+               e820__range_add(start, size, e820_type);
        }
        e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
 }

diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index c2f8e4ab55bd72a564000aee4a92002293286867..a634723e660f70a51aca07ea0bad6a7e8b87a5ec 100644 (file)
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -596,7 +596,7 @@ static void __init xen_align_and_add_e820_region(phys_addr_t start,
                end &= ~((phys_addr_t)PAGE_SIZE - 1);
        }
 
-       e820_add_region(start, end - start, type);
+       e820__range_add(start, end - start, type);
 }
 
 static void __init xen_ignore_unusable(void)
@@ -858,7 +858,7 @@ char * __init xen_memory_setup(void)
         * reserve ISA memory anyway because too many things poke
         * about in there.
         */
-       e820_add_region(ISA_START_ADDRESS, ISA_END_ADDRESS - ISA_START_ADDRESS,
+       e820__range_add(ISA_START_ADDRESS, ISA_END_ADDRESS - ISA_START_ADDRESS,
                        E820_RESERVED);
 
        e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries);
@@ -936,7 +936,7 @@ char * __init xen_auto_xlated_memory_setup(void)
                          &xen_e820_table_entries);
 
        for (i = 0; i < xen_e820_table_entries; i++)
-               e820_add_region(xen_e820_table[i].addr, xen_e820_table[i].size,
+               e820__range_add(xen_e820_table[i].addr, xen_e820_table[i].size,
                                xen_e820_table[i].type);
 
        /* Remove p2m info, it is not needed. */

diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 2604189d6cd156e5449c7dd071d63120ea000a0e..9b9ac04593fb5134e8b03f2ad5ebf9e75276b7e5 100644 (file)
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -556,7 +556,7 @@ void __init acpi_table_upgrade(void)
         * But it's not enough on X86 because ioremap will
         * complain later (used by acpi_os_map_memory) that the pages
         * that should get mapped are not marked "reserved".
-        * Both memblock_reserve and e820_add_region (via arch_reserve_mem_area)
+        * Both memblock_reserve and e820__range_add (via arch_reserve_mem_area)
         * works fine.
         */
        memblock_reserve(acpi_tables_addr, all_tables_size);