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vsprintf: Make %pGp print the hex value

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All existing users of %pGp want the hex value as well as the decoded
flag names.  This looks awkward (passing the same parameter to printf
twice), so move that functionality into the core.  If we want, we
can make that optional with flag arguments to %pGp in the future.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Yafang Shao <laoar.shao@gmail.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20211019142621.2810043-6-willy@infradead.org
This commit is contained in:
Matthew Wilcox (Oracle)
2021-10-19 15:26:21 +01:00
committed by Petr Mladek
parent 507f986036
commit 23efd0804c
6 changed files with 24 additions and 11 deletions
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9
lib/test_printf.c
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@@ -609,10 +609,14 @@ page_flags_test(int section, int node, int zone, int last_cpupid,
char *cmp_buf)
{
unsigned long values[] = {section, node, zone, last_cpupid, kasan_tag};
unsigned long size = 0;
unsigned long size;
bool append = false;
int i;
for (i = 0; i < ARRAY_SIZE(values); i++)
flags |= (values[i] & pft[i].mask) << pft[i].shift;
size = scnprintf(cmp_buf, BUF_SIZE, "%#lx(", flags);
if (flags & PAGEFLAGS_MASK) {
size += scnprintf(cmp_buf + size, BUF_SIZE - size, "%s", name);
append = true;
@@ -625,7 +629,6 @@ page_flags_test(int section, int node, int zone, int last_cpupid,
if (append)
size += scnprintf(cmp_buf + size, BUF_SIZE - size, "|");
flags |= (values[i] & pft[i].mask) << pft[i].shift;
size += scnprintf(cmp_buf + size, BUF_SIZE - size, "%s=",
pft[i].name);
size += scnprintf(cmp_buf + size, BUF_SIZE - size, pft[i].fmt,
@@ -633,6 +636,8 @@ page_flags_test(int section, int node, int zone, int last_cpupid,
append = true;
}
snprintf(cmp_buf + size, BUF_SIZE - size, ")");
test(cmp_buf, "%pGp", &flags);
}