diff options
| author | Heiko Carstens <hca@linux.ibm.com> | 2023-02-28 13:57:50 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2023-03-13 09:16:42 +0100 |
| commit | 69a407bf81a8d70d51e1b7787da577e67447c9ea (patch) | |
| tree | c2016b970ed4cddf41c8fab959128a3106098182 /arch/s390/kernel/entry.S | |
| parent | 9b63fd2fc8526e51444de35598927e406b1bb26f (diff) | |
s390/bp: remove __bpon()
There is no point in changing branch prediction state of a cpu shortly
before it enters stop state. Therefore remove __bpon().
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel/entry.S')
| -rw-r--r-- | arch/s390/kernel/entry.S | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index d8890a6f5dee..58b85aedca22 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -159,21 +159,15 @@ _LPP_OFFSET = __LC_LPP .section .kprobes.text, "ax" .Ldummy: /* - * This nop exists only in order to avoid that __bpon starts at - * the beginning of the kprobes text section. In that case we would - * have several symbols at the same address. E.g. objdump would take - * an arbitrary symbol name when disassembling this code. - * With the added nop in between the __bpon symbol is unique - * again. + * The following nop exists only in order to avoid that the next + * symbol starts at the beginning of the kprobes text section. + * In that case there would be several symbols at the same address. + * E.g. objdump would take an arbitrary symbol when disassembling + * the code. + * With the added nop in between this cannot happen. */ nop 0 -ENTRY(__bpon) - .globl __bpon - BPON - BR_EX %r14 -ENDPROC(__bpon) - /* * Scheduler resume function, called by switch_to * gpr2 = (task_struct *) prev |