From 4c652a47722f69c6f2685f05b17490ea97f643a8 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 6 Feb 2026 08:41:13 +0100 Subject: rseq: Mark rseq_arm_slice_extension_timer() __always_inline objtool warns about this function being called inside of a uaccess section: kernel/entry/common.o: warning: objtool: irqentry_exit+0x1dc: call to rseq_arm_slice_extension_timer() with UACCESS enabled Interestingly, this happens with CONFIG_RSEQ_SLICE_EXTENSION disabled, so this is an empty function, as the normal implementation is already marked __always_inline. I could reproduce this multiple times with gcc-11 but not with gcc-15, so the compiler probably got better at identifying the trivial function. Mark all the empty helpers for !RSEQ_SLICE_EXTENSION as __always_inline for consistency, avoiding this warning. Fixes: 0ac3b5c3dc45 ("rseq: Implement time slice extension enforcement timer") Signed-off-by: Arnd Bergmann Signed-off-by: Peter Zijlstra (Intel) Link: https://patch.msgid.link/20260206074122.709580-1-arnd@kernel.org --- include/linux/rseq_entry.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'include') diff --git a/include/linux/rseq_entry.h b/include/linux/rseq_entry.h index cbc4a791618b..c6831c93cd6e 100644 --- a/include/linux/rseq_entry.h +++ b/include/linux/rseq_entry.h @@ -216,10 +216,10 @@ efault: } #else /* CONFIG_RSEQ_SLICE_EXTENSION */ -static inline bool rseq_slice_extension_enabled(void) { return false; } -static inline bool rseq_arm_slice_extension_timer(void) { return false; } -static inline void rseq_slice_clear_grant(struct task_struct *t) { } -static inline bool rseq_grant_slice_extension(bool work_pending) { return false; } +static __always_inline bool rseq_slice_extension_enabled(void) { return false; } +static __always_inline bool rseq_arm_slice_extension_timer(void) { return false; } +static __always_inline void rseq_slice_clear_grant(struct task_struct *t) { } +static __always_inline bool rseq_grant_slice_extension(bool work_pending) { return false; } #endif /* !CONFIG_RSEQ_SLICE_EXTENSION */ bool rseq_debug_update_user_cs(struct task_struct *t, struct pt_regs *regs, unsigned long csaddr); -- cgit v1.2.3