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context_tracking: Always inline ct_{nmi,irq}_{enter,exit}()

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[ Upstream commit 9ac50f7311 ]

Thanks to CONFIG_DEBUG_SECTION_MISMATCH, empty functions can be
generated out of line.  These can be called from noinstr code, so make
sure they're always inlined.

Fixes the following warnings:

  vmlinux.o: warning: objtool: irqentry_nmi_enter+0xa2: call to ct_nmi_enter() leaves .noinstr.text section
  vmlinux.o: warning: objtool: irqentry_nmi_exit+0x16: call to ct_nmi_exit() leaves .noinstr.text section
  vmlinux.o: warning: objtool: irqentry_exit+0x78: call to ct_irq_exit() leaves .noinstr.text section

Fixes: 6f0e6c1598 ("context_tracking: Take IRQ eqs entrypoints over RCU")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/8509bce3f536bcd4ae7af3a2cf6930d48c5e631a.1743481539.git.jpoimboe@kernel.org
Closes: https://lore.kernel.org/d1eca076-fdde-484a-b33e-70e0d167c36d@infradead.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Josh Poimboeuf
2025-03-31 21:26:45 -07:00
committed by Greg Kroah-Hartman
parent 698243234d
commit 0a0813d127
1 changed files with 4 additions and 4 deletions
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include/linux/context_tracking_irq.h
+4 -4
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@@ -10,12 +10,12 @@ void ct_irq_exit_irqson(void);
void ct_nmi_enter(void);
void ct_nmi_exit(void);
#else
static inline void ct_irq_enter(void) { }
static inline void ct_irq_exit(void) { }
static __always_inline void ct_irq_enter(void) { }
static __always_inline void ct_irq_exit(void) { }
static inline void ct_irq_enter_irqson(void) { }
static inline void ct_irq_exit_irqson(void) { }
static inline void ct_nmi_enter(void) { }
static inline void ct_nmi_exit(void) { }
static __always_inline void ct_nmi_enter(void) { }
static __always_inline void ct_nmi_exit(void) { }
#endif
#endif