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x86/entry: Rename idtentry_enter/exit_cond_rcu() to idtentry_enter/exit()

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They were originally called _cond_rcu because they were special versions
with conditional RCU handling.  Now they're the standard entry and exit
path, so the _cond_rcu part is just confusing.  Drop it.

Also change the signature to make them more extensible and more foolproof.

No functional change -- it's pure refactoring.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/247fc67685263e0b673e1d7f808182d28ff80359.1593795633.git.luto@kernel.org
This commit is contained in:
Andy Lutomirski
2020-07-03 10:02:58 -07:00
committed by Thomas Gleixner
parent dcb7fd82c7
commit b037b09b90
5 changed files with 53 additions and 43 deletions
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6
arch/x86/kernel/traps.c
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@@ -245,7 +245,7 @@ static noinstr bool handle_bug(struct pt_regs *regs)
DEFINE_IDTENTRY_RAW(exc_invalid_op)
{
bool rcu_exit;
idtentry_state_t state;
/*
* We use UD2 as a short encoding for 'CALL __WARN', as such
@@ -255,11 +255,11 @@ DEFINE_IDTENTRY_RAW(exc_invalid_op)
if (!user_mode(regs) && handle_bug(regs))
return;
rcu_exit = idtentry_enter_cond_rcu(regs);
state = idtentry_enter(regs);
instrumentation_begin();
handle_invalid_op(regs);
instrumentation_end();
idtentry_exit_cond_rcu(regs, rcu_exit);
idtentry_exit(regs, state);
}
DEFINE_IDTENTRY(exc_coproc_segment_overrun)