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authorLinus Torvalds <torvalds@linux-foundation.org>2022-03-24 14:14:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-03-24 14:14:07 -0700
commit52deda9551a01879b3562e7b41748e85c591f14c (patch)
treeaacbed0ff40a64529c8d384a0c87b2c3aea4bf2b /lib/bitmap.c
parent169e77764adc041b1dacba84ea90516a895d43b2 (diff)
parentb027471adaf955efde6153d67f391fe1604b7292 (diff)
Merge branch 'akpm' (patches from Andrew)
Merge more updates from Andrew Morton: "Various misc subsystems, before getting into the post-linux-next material. 41 patches. Subsystems affected by this patch series: procfs, misc, core-kernel, lib, checkpatch, init, pipe, minix, fat, cgroups, kexec, kdump, taskstats, panic, kcov, resource, and ubsan" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (41 commits) Revert "ubsan, kcsan: Don't combine sanitizer with kcov on clang" kernel/resource: fix kfree() of bootmem memory again kcov: properly handle subsequent mmap calls kcov: split ioctl handling into locked and unlocked parts panic: move panic_print before kmsg dumpers panic: add option to dump all CPUs backtraces in panic_print docs: sysctl/kernel: add missing bit to panic_print taskstats: remove unneeded dead assignment kasan: no need to unset panic_on_warn in end_report() ubsan: no need to unset panic_on_warn in ubsan_epilogue() panic: unset panic_on_warn inside panic() docs: kdump: add scp example to write out the dump file docs: kdump: update description about sysfs file system support arm64: mm: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef x86/setup: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef riscv: mm: init: use IS_ENABLED(CONFIG_KEXEC_CORE) instead of #ifdef kexec: make crashk_res, crashk_low_res and crash_notes symbols always visible cgroup: use irqsave in cgroup_rstat_flush_locked(). fat: use pointer to simple type in put_user() minix: fix bug when opening a file with O_DIRECT ...
Diffstat (limited to 'lib/bitmap.c')
-rw-r--r--lib/bitmap.c24
1 files changed, 17 insertions, 7 deletions
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 926408883456..0d5c2ece0bcb 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -492,6 +492,11 @@ EXPORT_SYMBOL(bitmap_print_to_pagebuf);
* @list: indicates whether the bitmap must be list
* true: print in decimal list format
* false: print in hexadecimal bitmask format
+ * @buf: buffer into which string is placed
+ * @maskp: pointer to bitmap to convert
+ * @nmaskbits: size of bitmap, in bits
+ * @off: in the string from which we are copying, We copy to @buf
+ * @count: the maximum number of bytes to print
*/
static int bitmap_print_to_buf(bool list, char *buf, const unsigned long *maskp,
int nmaskbits, loff_t off, size_t count)
@@ -512,6 +517,11 @@ static int bitmap_print_to_buf(bool list, char *buf, const unsigned long *maskp,
/**
* bitmap_print_bitmask_to_buf - convert bitmap to hex bitmask format ASCII string
+ * @buf: buffer into which string is placed
+ * @maskp: pointer to bitmap to convert
+ * @nmaskbits: size of bitmap, in bits
+ * @off: in the string from which we are copying, We copy to @buf
+ * @count: the maximum number of bytes to print
*
* The bitmap_print_to_pagebuf() is used indirectly via its cpumap wrapper
* cpumap_print_to_pagebuf() or directly by drivers to export hexadecimal
@@ -553,12 +563,6 @@ static int bitmap_print_to_buf(bool list, char *buf, const unsigned long *maskp,
* move to use bin_attribute. In result, we have to pass the corresponding
* parameters such as off, count from bin_attribute show entry to this API.
*
- * @buf: buffer into which string is placed
- * @maskp: pointer to bitmap to convert
- * @nmaskbits: size of bitmap, in bits
- * @off: in the string from which we are copying, We copy to @buf
- * @count: the maximum number of bytes to print
- *
* The role of cpumap_print_bitmask_to_buf() and cpumap_print_list_to_buf()
* is similar with cpumap_print_to_pagebuf(), the difference is that
* bitmap_print_to_pagebuf() mainly serves sysfs attribute with the assumption
@@ -597,6 +601,11 @@ EXPORT_SYMBOL(bitmap_print_bitmask_to_buf);
/**
* bitmap_print_list_to_buf - convert bitmap to decimal list format ASCII string
+ * @buf: buffer into which string is placed
+ * @maskp: pointer to bitmap to convert
+ * @nmaskbits: size of bitmap, in bits
+ * @off: in the string from which we are copying, We copy to @buf
+ * @count: the maximum number of bytes to print
*
* Everything is same with the above bitmap_print_bitmask_to_buf() except
* the print format.
@@ -807,7 +816,8 @@ EXPORT_SYMBOL(bitmap_parselist);
/**
- * bitmap_parselist_user()
+ * bitmap_parselist_user() - convert user buffer's list format ASCII
+ * string to bitmap
*
* @ubuf: pointer to user buffer containing string.
* @ulen: buffer size in bytes. If string is smaller than this