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lockdep: Noinstr annotate warn_bogus_irq_restore()

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vmlinux.o: warning: objtool: lock_is_held_type()+0x107: call to warn_bogus_irq_restore() leaves .noinstr.text section

As per the general rule that WARNs are allowed to violate noinstr to
get out, annotate it away.

Fixes: 997acaf6b4 ("lockdep: report broken irq restoration")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested
Link: https://lkml.kernel.org/r/YCKyYg53mMp4E7YI@hirez.programming.kicks-ass.net
This commit is contained in:
Peter Zijlstra
2021-02-09 09:30:03 +01:00
parent 7f82e631d2
commit c8cc7e8531
1 changed files with 3 additions and 1 deletions
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4
kernel/locking/irqflag-debug.c
View File

@@ -4,8 +4,10 @@
#include <linux/export.h> #include <linux/export.h>
#include <linux/irqflags.h> #include <linux/irqflags.h>
void warn_bogus_irq_restore(void) noinstr void warn_bogus_irq_restore(void)
{ {
instrumentation_begin();
WARN_ONCE(1, "raw_local_irq_restore() called with IRQs enabled\n"); WARN_ONCE(1, "raw_local_irq_restore() called with IRQs enabled\n");
instrumentation_end();
} }
EXPORT_SYMBOL(warn_bogus_irq_restore); EXPORT_SYMBOL(warn_bogus_irq_restore);