diff options
| author | Kent Overstreet <kent.overstreet@gmail.com> | 2022-05-09 20:51:07 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@gmail.com> | 2022-06-09 15:09:29 -0400 |
| commit | 48a2f0ff931835d613fd6ac43c67876b4fa481cd (patch) | |
| tree | 1239a748aa00db39fdad5ec0f43aea33c9364d80 /include/linux/printbuf.h | |
| parent | 1545d45707fa4fb2869d93274db4b772d69b7ed9 (diff) | |
lib/printbuf: Unit specifiers
This adds options to printbuf for specifying whether units should be
printed raw (default) or with human readable units, and for controlling
whether human-readable units should be base 2 (default), or base 10.
This also adds new helpers that obey these options:
- pr_human_readable_u64
- pr_human_readable_s64
These obey printbuf->si_units
- pr_units_u64
- pr_units_s64
These obey both printbuf-human_readable_units and printbuf->si_units
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Diffstat (limited to 'include/linux/printbuf.h')
| -rw-r--r-- | include/linux/printbuf.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/printbuf.h b/include/linux/printbuf.h index 5d32a31295f0..c898faac742c 100644 --- a/include/linux/printbuf.h +++ b/include/linux/printbuf.h @@ -53,11 +53,20 @@ * * Make sure you use prt_newline() instead of \n in the format string for indent * level and tabstops to work corretly. + * + * Output units: printbuf->units exists to tell pretty-printers how to output + * numbers: a raw value (e.g. directly from a superblock field), as bytes, or as + * human readable bytes. prt_units() obeys it. */ #include <linux/kernel.h> #include <linux/string.h> +enum printbuf_si { + PRINTBUF_UNITS_2, /* use binary powers of 2^10 */ + PRINTBUF_UNITS_10, /* use powers of 10^3 (standard SI) */ +}; + struct printbuf { char *buf; unsigned size; @@ -71,6 +80,8 @@ struct printbuf { u8 atomic; bool allocation_failure:1; bool heap_allocated:1; + enum printbuf_si si_units:1; + bool human_readable_units:1; u8 tabstop; u8 tabstops[4]; }; @@ -84,6 +95,10 @@ void printbuf_indent_add(struct printbuf *, unsigned); void printbuf_indent_sub(struct printbuf *, unsigned); void prt_tab(struct printbuf *); void prt_tab_rjust(struct printbuf *); +void prt_human_readable_u64(struct printbuf *, u64); +void prt_human_readable_s64(struct printbuf *, s64); +void prt_units_u64(struct printbuf *, u64); +void prt_units_s64(struct printbuf *, s64); /* Initializer for a heap allocated printbuf: */ #define PRINTBUF ((struct printbuf) { .heap_allocated = true }) |