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| author | Masami Hiramatsu <mhiramat@kernel.org> | 2018-06-20 01:14:18 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-06-21 12:33:17 +0200 |
| commit | cba5ec980ca14b204bdb128be397ed1ddc1c7249 (patch) | |
| tree | 54cb67ea56c2eb63ae3f9c8a519c09115d42d7a0 /arch/s390/kernel | |
| parent | 9b85753da73c5c10a9bee4d573be9503ad726b45 (diff) | |
| download | linux-cba5ec980ca14b204bdb128be397ed1ddc1c7249.tar.gz linux-cba5ec980ca14b204bdb128be397ed1ddc1c7249.tar.bz2 linux-cba5ec980ca14b204bdb128be397ed1ddc1c7249.zip | |
s390/kprobes: Don't call the ->break_handler() in s390 kprobes code
Don't call the ->break_handler() from the s390 kprobes code,
because it was only used by jprobes which got removed.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-arch@vger.kernel.org
Cc: linux-s390@vger.kernel.org
Link: https://lore.kernel.org/lkml/152942485849.15209.16608277783809018031.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/s390/kernel')
| -rw-r--r-- | arch/s390/kernel/kprobes.c | 20 |
1 files changed, 0 insertions, 20 deletions
diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c index 0967de19f53d..3e34018960b5 100644 --- a/arch/s390/kernel/kprobes.c +++ b/arch/s390/kernel/kprobes.c @@ -332,26 +332,6 @@ static int kprobe_handler(struct pt_regs *regs) } enable_singlestep(kcb, regs, (unsigned long) p->ainsn.insn); return 1; - } else if (kprobe_running()) { - p = __this_cpu_read(current_kprobe); - if (p->break_handler && p->break_handler(p, regs)) { - /* - * Continuation after the jprobe completed and - * caused the jprobe_return trap. The jprobe - * break_handler "returns" to the original - * function that still has the kprobe breakpoint - * installed. We continue with single stepping. - */ - kcb->kprobe_status = KPROBE_HIT_SS; - enable_singlestep(kcb, regs, - (unsigned long) p->ainsn.insn); - return 1; - } /* else: - * No kprobe at this address and the current kprobe - * has no break handler (no jprobe!). The kernel just - * exploded, let the standard trap handler pick up the - * pieces. - */ } /* else: * No kprobe at this address and no active kprobe. The trap has * not been caused by a kprobe breakpoint. The race of breakpoint |