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| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2024-08-21 19:39:09 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-04 06:15:42 +0200 |
| commit | e27ad6560e4b5993315b56d6884ca5a4652468f4 (patch) | |
| tree | b4236a0b7893c1d4ba678172275ee839341b01b0 /lib/test_printf.c | |
| parent | selftests/mm: add more mseal traversal tests (diff) | |
| download | linux-e27ad6560e4b5993315b56d6884ca5a4652468f4.tar.xz linux-e27ad6560e4b5993315b56d6884ca5a4652468f4.zip | |
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/test_printf.c')
| -rw-r--r-- | lib/test_printf.c | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/lib/test_printf.c b/lib/test_printf.c index 965cb6f28527..8448b6d02bd9 100644 --- a/lib/test_printf.c +++ b/lib/test_printf.c @@ -641,26 +641,12 @@ page_flags_test(int section, int node, int zone, int last_cpupid, test(cmp_buf, "%pGp", &flags); } -static void __init page_type_test(unsigned int page_type, const char *name, - char *cmp_buf) -{ - unsigned long size; - - size = scnprintf(cmp_buf, BUF_SIZE, "%#x(", page_type); - if (page_type_has_type(page_type)) - size += scnprintf(cmp_buf + size, BUF_SIZE - size, "%s", name); - - snprintf(cmp_buf + size, BUF_SIZE - size, ")"); - test(cmp_buf, "%pGt", &page_type); -} - static void __init flags(void) { unsigned long flags; char *cmp_buffer; gfp_t gfp; - unsigned int page_type; cmp_buffer = kmalloc(BUF_SIZE, GFP_KERNEL); if (!cmp_buffer) @@ -700,18 +686,6 @@ flags(void) gfp |= __GFP_HIGH; test(cmp_buffer, "%pGg", &gfp); - page_type = ~0; - page_type_test(page_type, "", cmp_buffer); - - page_type = 10; - page_type_test(page_type, "", cmp_buffer); - - page_type = ~PG_buddy; - page_type_test(page_type, "buddy", cmp_buffer); - - page_type = ~(PG_table | PG_buddy); - page_type_test(page_type, "table|buddy", cmp_buffer); - kfree(cmp_buffer); } |