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vsnprintf: inline skip_atoi() again

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At some point skip_atoi() had been marked 'noinline_for_stack', but it
turns out that this is now a pessimization, and not inlining it actually
results in a stack frame in format decoding due to the call and thus
hurts stack usage rather than helping.

With the simplistic atoi function inlined, the format decoding now needs
no frame at all.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2024-12-19 11:37:07 -08:00
parent 614d13462d
commit f372b2256a
1 changed files with 1 additions and 2 deletions
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3
lib/vsprintf.c
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@ -160,8 +160,7 @@ long long simple_strtoll(const char *cp, char **endp, unsigned int base)
}
EXPORT_SYMBOL(simple_strtoll);
static noinline_for_stack
int skip_atoi(const char **s)
static inline int skip_atoi(const char **s)
{
int i = 0;