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From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>,
	Andrew Morton <akpm@linux-foundation.org>,
	Frederic Weisbecker <fweisbec@gmail.com>
Subject: [PATCH 2/9] tracing/x86: No need to disable interrupts when calling arch_init_ideal_nop5
Date: Fri, 15 Oct 2010 16:09:51 -0400	[thread overview]
Message-ID: <20101015201036.166812670@goodmis.org> (raw)
In-Reply-To: 20101015200949.134732894@goodmis.org

[-- Attachment #1: 0002-tracing-x86-No-need-to-disable-interrupts-when-calli.patch --]
[-- Type: text/plain, Size: 1048 bytes --]

From: Steven Rostedt <srostedt@redhat.com>

The function arch_init_ideal_nop5() is taken from the original
ftrace_dyn_arch_init() that originally had interrupts disabled
when calling it. This was due to the old way that mcounts were converted
to nops. The disabling of interrupts is no longer needed for the
work that is done.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
 kernel/trace/ftrace.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 65fb077..1ce8f24 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2795,15 +2795,13 @@ extern unsigned long __stop_mcount_loc[];
 
 void __init ftrace_init(void)
 {
-	unsigned long count, addr, flags;
+	unsigned long count, addr;
 	int ret;
 
 	/* Keep the ftrace pointer to the stub */
 	addr = (unsigned long)ftrace_stub;
 
-	local_irq_save(flags);
 	ftrace_dyn_arch_init(&addr);
-	local_irq_restore(flags);
 
 	/* ftrace_dyn_arch_init places the return code in addr */
 	if (addr)
-- 
1.7.1



  parent reply	other threads:[~2010-10-15 20:10 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-15 20:09 [PATCH 0/9] [GIT PULL] jump label: various updates Steven Rostedt
2010-10-15 20:09 ` [PATCH 1/9] jump label/x86: Move arch_init_ideal_nop5 later Steven Rostedt
2010-10-15 20:09 ` Steven Rostedt [this message]
2010-10-15 20:09 ` [PATCH 3/9] jump label: Fix module __init section race Steven Rostedt
2010-10-16  2:09   ` Steven Rostedt
2010-10-16  6:23     ` Ingo Molnar
2010-10-16 16:23       ` Steven Rostedt
2010-10-18 14:14         ` Jason Baron
2010-10-15 20:09 ` [PATCH 4/9] jump label: Fix deadlock b/w jump_label_mutex vs. text_mutex Steven Rostedt
2010-10-15 20:55   ` Peter Zijlstra
2010-10-16  2:16     ` Steven Rostedt
2010-10-16  2:25     ` Steven Rostedt
2010-10-16  4:21       ` Steven Rostedt
2010-10-15 20:09 ` [PATCH 5/9] jump label: Add register_jump_label_key/unregister_jump_label_key Steven Rostedt
2010-10-15 20:58   ` Peter Zijlstra
2010-10-16  2:11     ` Steven Rostedt
2010-10-15 21:03   ` Peter Zijlstra
2010-10-15 21:09     ` Steven Rostedt
2010-10-15 21:13       ` Peter Zijlstra
2010-10-18 12:05         ` Peter Zijlstra
2010-10-18 14:03           ` Jason Baron
2010-10-18 14:07             ` Peter Zijlstra
2010-10-15 20:09 ` [PATCH 6/9] jump label: Move jump table to r/w section Steven Rostedt
2010-10-15 20:09 ` [PATCH 7/9] jump label: Add docs Steven Rostedt
2010-10-15 20:09 ` [PATCH 8/9] jump label: Make arch_jump_label_text_poke_early() optional Steven Rostedt
2010-10-15 21:06   ` Peter Zijlstra
2010-10-15 21:08     ` Steven Rostedt
2010-10-15 21:22       ` David Daney
2010-10-15 21:35         ` Steven Rostedt
2010-10-15 21:38           ` David Daney
2010-10-16  1:08             ` Steven Rostedt
2010-10-30 10:40   ` [tip:perf/urgent] " tip-bot for Steven Rostedt
2010-10-15 20:09 ` [PATCH 9/9] jump label: Add MIPS support Steven Rostedt
2010-10-15 20:17 ` [PATCH 0/9] [GIT PULL] jump label: various updates Steven Rostedt
2010-10-16  1:10 ` Steven Rostedt
  -- strict thread matches above, loose matches on Subject: below --
2010-10-04 18:56 [PATCH v2 0/2] jump label: Add MIPS architecture support David Daney
2010-10-04 18:56 ` [PATCH v2 1/2] jump label: Make arch_jump_label_text_poke_early() optional David Daney
2010-10-04 18:56 ` [PATCH v2 2/2] jump label: Add MIPS support David Daney
2010-10-06 23:00   ` Ralf Baechle
2010-10-07  1:26     ` David Daney

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