Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
bug: Add BUG_FORMAT_ARGS infrastructure
Add BUG_FORMAT_ARGS; when an architecture is able to provide a va_list
given pt_regs, use this to print format arguments.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20251110115757.457339417@infradead.org
+16
-2
+1
include/asm-generic/bug.h
+1
include/asm-generic/bug.h
+15
-2
lib/bug.c
+15
-2
lib/bug.c
···
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163
return module_find_bug(bugaddr);
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}
165
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166
-
static void __warn_printf(const char *fmt)
166
+
static void __warn_printf(const char *fmt, struct pt_regs *regs)
167
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{
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if (!fmt)
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return;
170
+
171
+
#ifdef HAVE_ARCH_BUG_FORMAT_ARGS
172
+
if (regs) {
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+
struct arch_va_list _args;
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+
va_list *args = __warn_args(&_args, regs);
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+
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+
if (args) {
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+
vprintk(fmt, *args);
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+
return;
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+
}
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+
}
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+
#endif
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printk("%s", fmt);
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}
···
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once = bug->flags & BUGFLAG_ONCE;
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done = bug->flags & BUGFLAG_DONE;
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no_cut = bug->flags & BUGFLAG_NO_CUT_HERE;
196
+
has_args = bug->flags & BUGFLAG_ARGS;
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if (warning && once) {
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if (done)
···
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*/
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if (!no_cut) {
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printk(KERN_DEFAULT CUT_HERE);
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-
__warn_printf(fmt);
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+
__warn_printf(fmt, has_args ? regs : NULL);
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}
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if (warning) {