diff options
Diffstat (limited to 'kernel/entry')
| -rw-r--r-- | kernel/entry/common.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/kernel/entry/common.c b/kernel/entry/common.c index dff07b4ce6ec..17b1e032afe7 100644 --- a/kernel/entry/common.c +++ b/kernel/entry/common.c @@ -10,16 +10,7 @@ #define CREATE_TRACE_POINTS #include <trace/events/syscalls.h> -/** - * __enter_from_user_mode - Establish state when coming from user mode - * - * Syscall/interrupt entry disables interrupts, but user mode is traced as - * interrupts enabled. Also with NO_HZ_FULL RCU might be idle. - * - * 1) Tell lockdep that interrupts are disabled - * 2) Invoke context tracking if enabled to reactivate RCU - * 3) Trace interrupts off state - */ +/* See comment for enter_from_user_mode() in entry-common.h */ static __always_inline void __enter_from_user_mode(struct pt_regs *regs) { arch_check_user_regs(regs); @@ -33,6 +24,11 @@ static __always_inline void __enter_from_user_mode(struct pt_regs *regs) instrumentation_end(); } +void noinstr enter_from_user_mode(struct pt_regs *regs) +{ + __enter_from_user_mode(regs); +} + static inline void syscall_enter_audit(struct pt_regs *regs, long syscall) { if (unlikely(audit_context())) { |