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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2024-08-21 18:39:09 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-03 21:15:42 -0700 |
| commit | e27ad6560e4b5993315b56d6884ca5a4652468f4 (patch) | |
| tree | b4236a0b7893c1d4ba678172275ee839341b01b0 /lib/vsprintf.c | |
| parent | f28bdd1b17ec187eaa34845814afaaff99832762 (diff) | |
| download | tip-e27ad6560e4b5993315b56d6884ca5a4652468f4.tar.gz | |
printf: remove %pGt support
Patch series "Increase the number of bits available in page_type".
Kent wants more than 16 bits in page_type, so I resurrected this old patch
and expanded it a bit. It's a bit more efficient than our current scheme
(1 4-byte insn vs 3 insns of 13 bytes total) to test a single page type.
This patch (of 4):
An upcoming patch will convert page type from being a bitfield to a
single byte, so we will not be able to use %pG to print the page type
any more. The printing of the symbolic name will be restored in that
patch.
Link: https://lkml.kernel.org/r/20240821173914.2270383-1-willy@infradead.org
Link: https://lkml.kernel.org/r/20240821173914.2270383-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib/vsprintf.c')
| -rw-r--r-- | lib/vsprintf.c | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index 2d71b11159161b..09f022ba1c0538 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -2054,25 +2054,6 @@ char *format_page_flags(char *buf, char *end, unsigned long flags) return buf; } -static -char *format_page_type(char *buf, char *end, unsigned int page_type) -{ - buf = number(buf, end, page_type, default_flag_spec); - - if (buf < end) - *buf = '('; - buf++; - - if (page_type_has_type(page_type)) - buf = format_flags(buf, end, ~page_type, pagetype_names); - - if (buf < end) - *buf = ')'; - buf++; - - return buf; -} - static noinline_for_stack char *flags_string(char *buf, char *end, void *flags_ptr, struct printf_spec spec, const char *fmt) @@ -2086,8 +2067,6 @@ char *flags_string(char *buf, char *end, void *flags_ptr, switch (fmt[1]) { case 'p': return format_page_flags(buf, end, *(unsigned long *)flags_ptr); - case 't': - return format_page_type(buf, end, *(unsigned int *)flags_ptr); case 'v': flags = *(unsigned long *)flags_ptr; names = vmaflag_names; |