From: tip-bot for Masami Hiramatsu <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: torvalds@linux-foundation.org, linux-kernel@vger.kernel.org,
hpa@zytor.com, mhiramat@kernel.org, mingo@kernel.org,
davem@davemloft.net, naveen.n.rao@linux.vnet.ibm.com,
tglx@linutronix.de, anil.s.keshavamurthy@intel.com,
peterz@infradead.org
Subject: [tip:perf/core] kprobes: Remove pointless BUG_ON() from reuse_unused_kprobe()
Date: Tue, 11 Sep 2018 23:52:58 -0700 [thread overview]
Message-ID: <tip-a6d18e65dff2b73ceeb187c598b48898e36ad7b1@git.kernel.org> (raw)
In-Reply-To: <153666121154.21306.17540752948574483565.stgit@devbox>
Commit-ID: a6d18e65dff2b73ceeb187c598b48898e36ad7b1
Gitweb: https://git.kernel.org/tip/a6d18e65dff2b73ceeb187c598b48898e36ad7b1
Author: Masami Hiramatsu <mhiramat@kernel.org>
AuthorDate: Tue, 11 Sep 2018 19:20:11 +0900
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Wed, 12 Sep 2018 08:01:16 +0200
kprobes: Remove pointless BUG_ON() from reuse_unused_kprobe()
Since reuse_unused_kprobe() is called when the given kprobe
is unused, checking it inside again with BUG_ON() is
pointless. Remove it.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S . Miller <davem@davemloft.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Naveen N . Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/153666121154.21306.17540752948574483565.stgit@devbox
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
kernel/kprobes.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 231569e1e2c8..277a6cbe83db 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -704,7 +704,6 @@ static void reuse_unused_kprobe(struct kprobe *ap)
{
struct optimized_kprobe *op;
- BUG_ON(!kprobe_unused(ap));
/*
* Unused kprobe MUST be on the way of delayed unoptimizing (means
* there is still a relative jump) and disabled.
next prev parent reply other threads:[~2018-09-12 6:53 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-11 10:18 [PATCH -tip v2 0/5] kprobes: Remove BUG_ON from kprobes Masami Hiramatsu
2018-09-11 10:19 ` [PATCH -tip v2 1/5] kprobes: Remove meaningless BUG_ON from disarming process Masami Hiramatsu
2018-09-12 6:51 ` [tip:perf/core] kprobes: Remove pointless BUG_ON() " tip-bot for Masami Hiramatsu
2018-09-11 10:19 ` [PATCH -tip v2 2/5] kprobes: Remove meaningless BUG_ON from add_new_kprobe Masami Hiramatsu
2018-09-12 6:52 ` [tip:perf/core] kprobes: Remove pointless BUG_ON() from add_new_kprobe() tip-bot for Masami Hiramatsu
2018-09-11 10:20 ` [PATCH -tip v2 3/5] kprobes: Remove meaningless BUG_ON from reuse_unused_kprobe Masami Hiramatsu
2018-09-12 6:52 ` tip-bot for Masami Hiramatsu [this message]
2018-09-11 10:20 ` [PATCH -tip v2 4/5] kprobes: Return error if fail to reuse kprobe instead of BUG_ON Masami Hiramatsu
2018-09-12 6:53 ` [tip:perf/core] kprobes: Return error if we fail to reuse kprobe instead of BUG_ON() tip-bot for Masami Hiramatsu
2018-09-11 10:21 ` [PATCH -tip v2 5/5] kprobes: Don't call BUG_ON if there is a kprobe in use on free list Masami Hiramatsu
2018-09-12 6:54 ` [tip:perf/core] kprobes: Don't call BUG_ON() " tip-bot for Masami Hiramatsu
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