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-rw-r--r--lib/Kconfig.debug5
-rw-r--r--lib/bitmap.c33
-rw-r--r--lib/string_helpers.c34
-rw-r--r--lib/vsprintf.c49
4 files changed, 89 insertions, 32 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 31d784dd80d..b0f239e443b 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -652,6 +652,11 @@ config DEBUG_BLOCK_EXT_DEVT
depends on BLOCK
default n
help
+ BIG FAT WARNING: ENABLING THIS OPTION MIGHT BREAK BOOTING ON
+ SOME DISTRIBUTIONS. DO NOT ENABLE THIS UNLESS YOU KNOW WHAT
+ YOU ARE DOING. Distros, please enable this and fix whatever
+ is broken.
+
Conventionally, block device numbers are allocated from
predetermined contiguous area. However, extended block area
may introduce non-contiguous block device numbers. This
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 06fb57c86de..1338469ac84 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -316,17 +316,6 @@ int bitmap_scnprintf(char *buf, unsigned int buflen,
EXPORT_SYMBOL(bitmap_scnprintf);
/**
- * bitmap_scnprintf_len - return buffer length needed to convert
- * bitmap to an ASCII hex string
- * @nr_bits: number of bits to be converted
- */
-int bitmap_scnprintf_len(unsigned int nr_bits)
-{
- unsigned int nr_nibbles = ALIGN(nr_bits, 4) / 4;
- return nr_nibbles + ALIGN(nr_nibbles, CHUNKSZ / 4) / (CHUNKSZ / 4) - 1;
-}
-
-/**
* __bitmap_parse - convert an ASCII hex string into a bitmap.
* @buf: pointer to buffer containing string.
* @buflen: buffer size in bytes. If string is smaller than this
@@ -1007,3 +996,25 @@ int bitmap_allocate_region(unsigned long *bitmap, int pos, int order)
return 0;
}
EXPORT_SYMBOL(bitmap_allocate_region);
+
+/**
+ * bitmap_copy_le - copy a bitmap, putting the bits into little-endian order.
+ * @dst: destination buffer
+ * @src: bitmap to copy
+ * @nbits: number of bits in the bitmap
+ *
+ * Require nbits % BITS_PER_LONG == 0.
+ */
+void bitmap_copy_le(void *dst, const unsigned long *src, int nbits)
+{
+ unsigned long *d = dst;
+ int i;
+
+ for (i = 0; i < nbits/BITS_PER_LONG; i++) {
+ if (BITS_PER_LONG == 64)
+ d[i] = cpu_to_le64(src[i]);
+ else
+ d[i] = cpu_to_le32(src[i]);
+ }
+}
+EXPORT_SYMBOL(bitmap_copy_le);
diff --git a/lib/string_helpers.c b/lib/string_helpers.c
index 8347925030f..ab431d4cc97 100644
--- a/lib/string_helpers.c
+++ b/lib/string_helpers.c
@@ -23,7 +23,7 @@
int string_get_size(u64 size, const enum string_size_units units,
char *buf, int len)
{
- const char *units_10[] = { "B", "KB", "MB", "GB", "TB", "PB",
+ const char *units_10[] = { "B", "kB", "MB", "GB", "TB", "PB",
"EB", "ZB", "YB", NULL};
const char *units_2[] = {"B", "KiB", "MiB", "GiB", "TiB", "PiB",
"EiB", "ZiB", "YiB", NULL };
@@ -31,7 +31,7 @@ int string_get_size(u64 size, const enum string_size_units units,
[STRING_UNITS_10] = units_10,
[STRING_UNITS_2] = units_2,
};
- const int divisor[] = {
+ const unsigned int divisor[] = {
[STRING_UNITS_10] = 1000,
[STRING_UNITS_2] = 1024,
};
@@ -40,23 +40,27 @@ int string_get_size(u64 size, const enum string_size_units units,
char tmp[8];
tmp[0] = '\0';
+ i = 0;
+ if (size >= divisor[units]) {
+ while (size >= divisor[units] && units_str[units][i]) {
+ remainder = do_div(size, divisor[units]);
+ i++;
+ }
- for (i = 0; size > divisor[units] && units_str[units][i]; i++)
- remainder = do_div(size, divisor[units]);
+ sf_cap = size;
+ for (j = 0; sf_cap*10 < 1000; j++)
+ sf_cap *= 10;
- sf_cap = size;
- for (j = 0; sf_cap*10 < 1000; j++)
- sf_cap *= 10;
-
- if (j) {
- remainder *= 1000;
- do_div(remainder, divisor[units]);
- snprintf(tmp, sizeof(tmp), ".%03lld",
- (unsigned long long)remainder);
- tmp[j+1] = '\0';
+ if (j) {
+ remainder *= 1000;
+ do_div(remainder, divisor[units]);
+ snprintf(tmp, sizeof(tmp), ".%03lld",
+ (unsigned long long)remainder);
+ tmp[j+1] = '\0';
+ }
}
- snprintf(buf, len, "%lld%s%s", (unsigned long long)size,
+ snprintf(buf, len, "%lld%s %s", (unsigned long long)size,
tmp, units_str[units][i]);
return 0;
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index cceecb6a963..a013bbc2371 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -24,6 +24,7 @@
#include <linux/kernel.h>
#include <linux/kallsyms.h>
#include <linux/uaccess.h>
+#include <linux/ioport.h>
#include <asm/page.h> /* for PAGE_SIZE */
#include <asm/div64.h>
@@ -550,18 +551,51 @@ static char *symbol_string(char *buf, char *end, void *ptr, int field_width, int
#endif
}
+static char *resource_string(char *buf, char *end, struct resource *res, int field_width, int precision, int flags)
+{
+#ifndef IO_RSRC_PRINTK_SIZE
+#define IO_RSRC_PRINTK_SIZE 4
+#endif
+
+#ifndef MEM_RSRC_PRINTK_SIZE
+#define MEM_RSRC_PRINTK_SIZE 8
+#endif
+
+ /* room for the actual numbers, the two "0x", -, [, ] and the final zero */
+ char sym[4*sizeof(resource_size_t) + 8];
+ char *p = sym, *pend = sym + sizeof(sym);
+ int size = -1;
+
+ if (res->flags & IORESOURCE_IO)
+ size = IO_RSRC_PRINTK_SIZE;
+ else if (res->flags & IORESOURCE_MEM)
+ size = MEM_RSRC_PRINTK_SIZE;
+
+ *p++ = '[';
+ p = number(p, pend, res->start, 16, size, -1, SPECIAL | SMALL | ZEROPAD);
+ *p++ = '-';
+ p = number(p, pend, res->end, 16, size, -1, SPECIAL | SMALL | ZEROPAD);
+ *p++ = ']';
+ *p = 0;
+
+ return string(buf, end, sym, field_width, precision, flags);
+}
+
/*
* Show a '%p' thing. A kernel extension is that the '%p' is followed
* by an extra set of alphanumeric characters that are extended format
* specifiers.
*
- * Right now we just handle 'F' (for symbolic Function descriptor pointers)
- * and 'S' (for Symbolic direct pointers), but this can easily be
- * extended in the future (network address types etc).
+ * Right now we handle:
+ *
+ * - 'F' For symbolic function descriptor pointers
+ * - 'S' For symbolic direct pointers
+ * - 'R' For a struct resource pointer, it prints the range of
+ * addresses (not the name nor the flags)
*
- * The difference between 'S' and 'F' is that on ia64 and ppc64 function
- * pointers are really function descriptors, which contain a pointer the
- * real address.
+ * Note: The difference between 'S' and 'F' is that on ia64 and ppc64
+ * function pointers are really function descriptors, which contain a
+ * pointer to the real address.
*/
static char *pointer(const char *fmt, char *buf, char *end, void *ptr, int field_width, int precision, int flags)
{
@@ -571,6 +605,8 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr, int field
/* Fallthrough */
case 'S':
return symbol_string(buf, end, ptr, field_width, precision, flags);
+ case 'R':
+ return resource_string(buf, end, ptr, field_width, precision, flags);
}
flags |= SMALL;
if (field_width == -1) {
@@ -590,6 +626,7 @@ static char *pointer(const char *fmt, char *buf, char *end, void *ptr, int field
* This function follows C99 vsnprintf, but has some extensions:
* %pS output the name of a text symbol
* %pF output the name of a function pointer
+ * %pR output the address range in a struct resource
*
* The return value is the number of characters which would
* be generated for the given input, excluding the trailing