diff options
| 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 /Documentation | |
| parent | f28bdd1b17ec187eaa34845814afaaff99832762 (diff) | |
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 'Documentation')
| -rw-r--r-- | Documentation/core-api/printk-formats.rst | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/Documentation/core-api/printk-formats.rst b/Documentation/core-api/printk-formats.rst index 4451ef501936..14e093da3ccd 100644 --- a/Documentation/core-api/printk-formats.rst +++ b/Documentation/core-api/printk-formats.rst @@ -576,13 +576,12 @@ The field width is passed by value, the bitmap is passed by reference. Helper macros cpumask_pr_args() and nodemask_pr_args() are available to ease printing cpumask and nodemask. -Flags bitfields such as page flags, page_type, gfp_flags +Flags bitfields such as page flags and gfp_flags -------------------------------------------------------- :: %pGp 0x17ffffc0002036(referenced|uptodate|lru|active|private|node=0|zone=2|lastcpupid=0x1fffff) - %pGt 0xffffff7f(buddy) %pGg GFP_USER|GFP_DMA32|GFP_NOWARN %pGv read|exec|mayread|maywrite|mayexec|denywrite @@ -591,7 +590,6 @@ would construct the value. The type of flags is given by the third character. Currently supported are: - p - [p]age flags, expects value of type (``unsigned long *``) - - t - page [t]ype, expects value of type (``unsigned int *``) - v - [v]ma_flags, expects value of type (``unsigned long *``) - g - [g]fp_flags, expects value of type (``gfp_t *``) |