diff options
| author |   Geert Uytterhoeven <geert+renesas@glider.be> | 2019-10-25 11:41:24 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-03 18:08:53 +0100 |
| commit | d3504757f3f049b553ba0eda8bd17cd1f2651285 (patch) | |
| tree | 30f15df7508abc56187ead1a46305daf77ea4c3c /Documentation/filesystems | |
| parent | Documentation: debugfs: Document debugfs helper for unsigned long values (diff) | |
| download | linux-dev-d3504757f3f049b553ba0eda8bd17cd1f2651285.tar.xz linux-dev-d3504757f3f049b553ba0eda8bd17cd1f2651285.zip | |
debugfs: Add debugfs_create_xul() for hexadecimal unsigned long
The existing debugfs_create_ulong() function supports objects of
type "unsigned long", which are 32-bit or 64-bit depending on the
platform, in decimal form. To format objects in hexadecimal, various
debugfs_create_x*() functions exist, but all of them take fixed-size
types.
Add a debugfs helper for "unsigned long" objects in hexadecimal format.
This avoids the need for users to open-code the same, or introduce
bugs when casting the value pointer to "u32 *" or "u64 *" to call
debugfs_create_x{32,64}().
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20191025094130.26033-2-geert+renesas@glider.be
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/debugfs.txt | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/filesystems/debugfs.txt b/Documentation/filesystems/debugfs.txt index 36dac49e859f..dc497b96fa4f 100644 --- a/Documentation/filesystems/debugfs.txt +++ b/Documentation/filesystems/debugfs.txt @@ -102,11 +102,14 @@ functions meant to help out in such special cases: As might be expected, this function will create a debugfs file to represent a variable of type size_t. -Similarly, there is a helper for variables of type unsigned long: +Similarly, there are helpers for variables of type unsigned long, in decimal +and hexadecimal: struct dentry *debugfs_create_ulong(const char *name, umode_t mode, struct dentry *parent, unsigned long *value); + void debugfs_create_xul(const char *name, umode_t mode, + struct dentry *parent, unsigned long *value); Boolean values can be placed in debugfs with: |