From: Peter Zijlstra <peterz@infradead.org>
To: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux-kernel@vger.kernel.org, mingo@kernel.org,
jasonbaron0@gmail.com, bp@alien8.de, luto@amacapital.net,
tglx@linutronix.de, rostedt@goodmis.org, will.deacon@arm.com,
liuj97@gmail.com, rabin@rab.in, ralf@linux-mips.org,
ddaney@caviumnetworks.com, benh@kernel.crashing.org,
michael@ellerman.id.au, davem@davemloft.net
Subject: Re: [RFC][PATCH 6/7] jump_label: Add a new static_key interface
Date: Mon, 27 Jul 2015 16:39:24 +0200 [thread overview]
Message-ID: <20150727143924.GX19282@twins.programming.kicks-ass.net> (raw)
In-Reply-To: <20150727105242.GD8278@osiris>
On Mon, Jul 27, 2015 at 12:52:42PM +0200, Heiko Carstens wrote:
> Yeah, just did that and it crashes ;)
Does this make it go?
---
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -221,7 +221,10 @@ void __init jump_label_init(void)
for (iter = iter_start; iter < iter_stop; iter++) {
struct static_key *iterk;
- arch_jump_label_transform_static(iter, jump_label_type(iter));
+ /* rewrite NOPs */
+ if (jump_label_type(iter) == JUMP_LABEL_NOP)
+ arch_jump_label_transform_static(iter, JUMP_LABEL_NOP);
+
iterk = jump_entry_key(iter);
if (iterk == key)
continue;
next prev parent reply other threads:[~2015-07-27 14:39 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-24 17:52 [RFC][PATCH 0/7] jump_label: Another (better) static_key interface Peter Zijlstra
2015-07-24 17:52 ` [RFC][PATCH 1/7] jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE Peter Zijlstra
2015-07-24 17:52 ` [RFC][PATCH 2/7] jump_label: Rename JUMP_LABEL_TYPE_* Peter Zijlstra
2015-07-24 17:52 ` [RFC][PATCH 3/7] jump_label: Add jump_entry_key() helper Peter Zijlstra
2015-07-24 17:52 ` [RFC][PATCH 4/7] jump_label: Add static_key_{en,dis}able() helpers Peter Zijlstra
2015-07-24 17:52 ` [RFC][PATCH 5/7] jump_label: Rework update logic Peter Zijlstra
2015-07-27 9:07 ` Peter Zijlstra
2015-07-27 10:47 ` Peter Zijlstra
2015-07-27 16:30 ` Peter Zijlstra
2015-07-28 5:54 ` Heiko Carstens
2015-07-24 17:52 ` [RFC][PATCH 6/7] jump_label: Add a new static_key interface Peter Zijlstra
2015-07-27 9:24 ` Peter Zijlstra
2015-07-27 9:52 ` Peter Zijlstra
2015-07-27 10:20 ` Heiko Carstens
2015-07-27 10:47 ` Peter Zijlstra
2015-07-27 10:50 ` Peter Zijlstra
2015-07-27 10:52 ` Heiko Carstens
2015-07-27 11:03 ` Peter Zijlstra
2015-07-27 14:39 ` Peter Zijlstra [this message]
2015-07-27 10:45 ` Peter Zijlstra
2015-07-27 10:51 ` Heiko Carstens
2015-07-24 17:52 ` [RFC][PATCH 7/7] x86, tsc: Employ static_branch_likely() Peter Zijlstra
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