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From: Masami Hiramatsu <mhiramat@kernel.org>
To: Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>,
	Ingo Molnar <mingo@redhat.com>, "H . Peter Anvin" <hpa@zytor.com>,
	linux-kernel@vger.kernel.org,
	Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	linux-arch@vger.kernel.org,
	Yoshinori Sato <ysato@users.sourceforge.jp>,
	Rich Felker <dalias@libc.org>,
	linux-sh@vger.kernel.org
Subject: [RFC PATCH -tip v5 22/27] sh: kprobes: Don't call the ->break_handler() in SH kprobes code
Date: Tue,  5 Jun 2018 00:59:10 +0900	[thread overview]
Message-ID: <152812795011.10068.14489215679738766582.stgit@devbox> (raw)
In-Reply-To: <152812730943.10068.5166429445118734697.stgit@devbox>

Don't call the ->break_handler() from the SH kprobes code,
because it was only used by jprobes which got removed.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: linux-sh@vger.kernel.org
---
 arch/sh/kernel/kprobes.c |   14 +-------------
 1 file changed, 1 insertion(+), 13 deletions(-)

diff --git a/arch/sh/kernel/kprobes.c b/arch/sh/kernel/kprobes.c
index 2b5e58873b96..4fafe0cd12c6 100644
--- a/arch/sh/kernel/kprobes.c
+++ b/arch/sh/kernel/kprobes.c
@@ -248,11 +248,6 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
 			prepare_singlestep(p, regs);
 			kcb->kprobe_status = KPROBE_REENTER;
 			return 1;
-		} else {
-			p = __this_cpu_read(current_kprobe);
-			if (p->break_handler && p->break_handler(p, regs)) {
-				goto ss_probe;
-			}
 		}
 		goto no_kprobe;
 	}
@@ -281,7 +276,6 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
 		/* handler has already set things up, so skip ss setup */
 		return 1;
 
-ss_probe:
 	prepare_singlestep(p, regs);
 	kcb->kprobe_status = KPROBE_HIT_SS;
 	return 1;
@@ -508,14 +502,8 @@ int __kprobes kprobe_exceptions_notify(struct notifier_block *self,
 				if (post_kprobe_handler(args->regs))
 					ret = NOTIFY_STOP;
 			} else {
-				if (kprobe_handler(args->regs)) {
+				if (kprobe_handler(args->regs))
 					ret = NOTIFY_STOP;
-				} else {
-					p = __this_cpu_read(current_kprobe);
-					if (p->break_handler &&
-					    p->break_handler(p, args->regs))
-						ret = NOTIFY_STOP;
-				}
 			}
 		}
 	}

  parent reply	other threads:[~2018-06-04 15:59 UTC|newest]

Thread overview: 76+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-04 15:48 [RFC PATCH -tip v5 00/27] kprobes: Cleanup jprobe implementation Masami Hiramatsu
2018-06-04 15:48 ` Masami Hiramatsu
2018-06-04 15:49 ` [RFC PATCH -tip v5 01/27] Documentation/kprobes: Fix to remove remaining jprobe Masami Hiramatsu
2018-06-04 15:49   ` Masami Hiramatsu
2018-06-04 15:49 ` [RFC PATCH -tip v5 02/27] kprobes: Remove jprobe API implementation Masami Hiramatsu
2018-06-04 15:49   ` Masami Hiramatsu
2018-06-04 15:49 ` [RFC PATCH -tip v5 03/27] kprobes/x86: Remove jprobe implementation Masami Hiramatsu
2018-06-04 15:49   ` Masami Hiramatsu
2018-06-04 15:50 ` [RFC PATCH -tip v5 04/27] ARC: kprobes: " Masami Hiramatsu
2018-06-04 15:50   ` Masami Hiramatsu
2018-06-04 15:50 ` [RFC PATCH -tip v5 05/27] ARM: kprobes: Remove jprobe arm implementation Masami Hiramatsu
2018-06-04 15:50   ` Masami Hiramatsu
2018-06-04 15:51 ` [RFC PATCH -tip v5 06/27] arm64: kprobes: Remove jprobe implementation Masami Hiramatsu
2018-06-04 15:51   ` Masami Hiramatsu
2018-06-05 15:34   ` Will Deacon
2018-06-05 15:34     ` Will Deacon
2018-06-06  4:42     ` Masami Hiramatsu
2018-06-06  4:42       ` Masami Hiramatsu
2018-06-04 15:51 ` [RFC PATCH -tip v5 07/27] powerpc/kprobes: Remove jprobe powerpc implementation Masami Hiramatsu
2018-06-04 15:51   ` Masami Hiramatsu
2018-06-07 11:31   ` Naveen N. Rao
2018-06-07 11:31     ` Naveen N. Rao
2018-06-07 14:23     ` Masami Hiramatsu
2018-06-07 14:23       ` Masami Hiramatsu
2018-06-04 15:52 ` [RFC PATCH -tip v5 08/27] ia64: kprobes: Remove jprobe implementation Masami Hiramatsu
2018-06-04 15:52   ` Masami Hiramatsu
2018-06-04 15:52 ` [RFC PATCH -tip v5 09/27] MIPS: " Masami Hiramatsu
2018-06-04 15:52   ` Masami Hiramatsu
2018-06-04 15:53 ` [RFC PATCH -tip v5 10/27] s390/kprobes: " Masami Hiramatsu
2018-06-04 15:53   ` Masami Hiramatsu
2018-06-04 15:53 ` [RFC PATCH -tip v5 11/27] sh: kprobes: " Masami Hiramatsu
2018-06-04 15:53   ` Masami Hiramatsu
2018-06-04 15:54 ` [RFC PATCH -tip v5 12/27] sparc64: " Masami Hiramatsu
2018-06-04 15:54   ` Masami Hiramatsu
2018-06-04 15:54 ` [RFC PATCH -tip v5 13/27] kprobes: Don't check the ->break_handler() in generic kprobes code Masami Hiramatsu
2018-06-04 15:54   ` Masami Hiramatsu
2018-06-04 15:55 ` [RFC PATCH -tip v5 14/27] kprobes/x86: Don't call ->break_handler() in x86 kprobes Masami Hiramatsu
2018-06-04 15:55   ` Masami Hiramatsu
2018-06-04 15:55 ` [RFC PATCH -tip v5 15/27] ARC: kprobes: Don't call the ->break_handler() in ARC kprobes code Masami Hiramatsu
2018-06-04 15:55   ` Masami Hiramatsu
2018-06-04 15:56 ` [RFC PATCH -tip v5 16/27] ARM: kprobes: Don't call the ->break_handler() in arm " Masami Hiramatsu
2018-06-04 15:56   ` Masami Hiramatsu
2018-06-04 15:56 ` [RFC PATCH -tip v5 17/27] arm64: " Masami Hiramatsu
2018-06-04 15:56   ` Masami Hiramatsu
2018-06-05 15:37   ` Will Deacon
2018-06-05 15:37     ` Will Deacon
2018-06-04 15:57 ` [RFC PATCH -tip v5 18/27] powerpc/kprobes: " Masami Hiramatsu
2018-06-04 15:57   ` Masami Hiramatsu
2018-06-07 11:37   ` Naveen N. Rao
2018-06-07 11:37     ` Naveen N. Rao
2018-06-07 14:28     ` Masami Hiramatsu
2018-06-07 14:28       ` Masami Hiramatsu
2018-06-07 16:37       ` Naveen N. Rao
2018-06-07 16:37         ` Naveen N. Rao
2018-06-08  0:42         ` Masami Hiramatsu
2018-06-08  0:42           ` Masami Hiramatsu
2018-06-04 15:57 ` [RFC PATCH -tip v5 19/27] ia64: kprobes: Don't call the ->break_handler() in ia64 " Masami Hiramatsu
2018-06-04 15:57   ` Masami Hiramatsu
2018-06-04 15:58 ` [RFC PATCH -tip v5 20/27] MIPS: kprobes: Don't call the ->break_handler() in MIPS " Masami Hiramatsu
2018-06-04 15:58   ` Masami Hiramatsu
2018-06-04 15:58 ` [RFC PATCH -tip v5 21/27] s390/kprobes: Don't call the ->break_handler() in s390 " Masami Hiramatsu
2018-06-04 15:58   ` Masami Hiramatsu
2018-06-04 15:59 ` Masami Hiramatsu [this message]
2018-06-04 15:59   ` [RFC PATCH -tip v5 22/27] sh: kprobes: Don't call the ->break_handler() in SH " Masami Hiramatsu
2018-06-04 15:59 ` [RFC PATCH -tip v5 23/27] sparc64: kprobes: Don't call the ->break_handler() in sparc64 " Masami Hiramatsu
2018-06-04 15:59   ` Masami Hiramatsu
2018-06-04 16:00 ` [RFC PATCH -tip v5 24/27] bpf: error-inject: kprobes: Clear current_kprobe and enable preempt in kprobe Masami Hiramatsu
2018-06-04 16:00   ` Masami Hiramatsu
2018-06-07 11:42   ` Naveen N. Rao
2018-06-07 11:42     ` Naveen N. Rao
2018-06-04 16:00 ` [RFC PATCH -tip v5 25/27] kprobes/x86: Do not disable preempt on int3 path Masami Hiramatsu
2018-06-04 16:00   ` Masami Hiramatsu
2018-06-04 16:01 ` [RFC PATCH -tip v5 26/27] Documentation: kprobes: Add how to change the execution path Masami Hiramatsu
2018-06-04 16:01   ` Masami Hiramatsu
2018-06-04 16:01 ` [RFC PATCH -tip v5 27/27] kprobes: Remove jprobe stub API Masami Hiramatsu
2018-06-04 16:01   ` Masami Hiramatsu

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