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From: ralf@linux-mips.org
To: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org
Subject: [patch 03/14] i8253: Consolidate all kernel definitions of i8253_lock in lib/i8253-lock.c.
Date: Wed, 01 Jun 2011 19:04:59 +0100	[thread overview]
Message-ID: <20110601180610.221426078@duck.linux-mips.net> (raw)
In-Reply-To: 20110601180456.801265664@duck.linux-mips.net

[-- Attachment #1: i8253-add-shared-lock.patch --]
[-- Type: text/plain, Size: 1635 bytes --]

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
To: linux-kernel@vger.kernel.org

 lib/Kconfig      |    6 ++++++
 lib/Makefile     |    1 +
 lib/i8253-lock.c |   11 +++++++++++
 3 files changed, 18 insertions(+)

Index: linux-i8253/lib/i8253-lock.c
===================================================================
--- /dev/null
+++ linux-i8253/lib/i8253-lock.c
@@ -0,0 +1,11 @@
+#include <linux/spinlock.h>
+#include <linux/module.h>
+
+/*
+ * Protects access to I/O ports
+ *
+ * 0040-0043 : timer0, i8253 / i8254
+ * 0061-0061 : NMI Control Register which contains two speaker control bits.
+ */
+DEFINE_RAW_SPINLOCK(i8253_lock);
+EXPORT_SYMBOL(i8253_lock);
Index: linux-i8253/lib/Makefile
===================================================================
--- linux-i8253.orig/lib/Makefile
+++ linux-i8253/lib/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_HAS_IOMEM) += iomap_copy.o 
 obj-$(CONFIG_CHECK_SIGNATURE) += check_signature.o
 obj-$(CONFIG_DEBUG_LOCKING_API_SELFTESTS) += locking-selftest.o
 obj-$(CONFIG_DEBUG_SPINLOCK) += spinlock_debug.o
+obj-$(CONFIG_I8253_LOCK) += i8253-lock.o
 lib-$(CONFIG_RWSEM_GENERIC_SPINLOCK) += rwsem-spinlock.o
 lib-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += rwsem.o
 
Index: linux-i8253/lib/Kconfig
===================================================================
--- linux-i8253.orig/lib/Kconfig
+++ linux-i8253/lib/Kconfig
@@ -237,6 +237,12 @@ config CPU_RMAP
 	bool
 	depends on SMP
 
+config I8253_LOCK
+	bool
+	help
+	  Enable the shared lock for the i8253 PIT.  Any system that uses
+	  the i8253 should select this.
+
 #
 # Netlink attribute parsing support is select'ed if needed
 #



  parent reply	other threads:[~2011-06-01 19:47 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-01 18:04 [patch 00/14] Sort out i8253 and PC speaker locking and headers ralf
2011-06-01 18:04 ` [patch 01/14] i8253: Create <linux/i8253.h> and make all in kernel users to use it ralf
2011-06-09 11:16   ` [tip:timers/cleanup] i8253: Create linux/i8253.h and use it in all 8253 related files tip-bot for Ralf Baechle
2011-06-09 13:04   ` tip-bot for Ralf Baechle
2011-06-01 18:04 ` [patch 02/14] i8253: Unify all kernel declarations of i8253_lock in <linux/i8253.h> ralf
2011-06-01 18:04   ` ralf at linux-mips.org
2011-06-09 11:16   ` [tip:timers/cleanup] i8253: Unify all kernel declarations of i8253_lock tip-bot for Ralf Baechle
2011-06-09 13:04   ` tip-bot for Ralf Baechle
2011-06-01 18:04 ` ralf [this message]
2011-06-09 11:17   ` [tip:timers/cleanup] i8253: Consolidate all kernel definitions " tip-bot for Ralf Baechle
2011-06-09 13:04   ` tip-bot for Ralf Baechle
2011-06-01 18:05 ` [patch 04/14] i8253: Make MIPS use the shared i8253_lock ralf
2011-06-01 18:05 ` [patch 05/14] i8253: Make x86 " ralf
2011-06-01 18:05 ` [patch 06/14] i8253: Make pcspkr input driver " ralf
2011-06-09 11:17   ` [tip:timers/cleanup] " tip-bot for Ralf Baechle
2011-06-09 13:05   ` tip-bot for Ralf Baechle
2011-06-01 18:05 ` [patch 07/14] i8253: Make pcsp sound " ralf
2011-06-01 18:05   ` ralf
2011-06-03  9:53   ` [alsa-devel] " Takashi Iwai
2011-06-03  9:53     ` Takashi Iwai
2011-06-09 11:18   ` [tip:timers/cleanup] " tip-bot for Ralf Baechle
2011-06-09 13:05   ` tip-bot for Ralf Baechle
2011-06-01 18:05 ` [patch 08/14] i8253: Alpha: Cleanup remaining users of i8253pit.h ralf
2011-06-09 11:19   ` [tip:timers/cleanup] alpha: i8253: " tip-bot for Ralf Baechle
2011-06-09 13:06   ` tip-bot for Ralf Baechle
2011-06-01 18:05 ` [patch 09/14] i8253: Alpha, PowerPC: Remove unused <asm/8253pit.h> header ralf
2011-06-01 18:05   ` ralf
2011-06-09  5:07   ` Benjamin Herrenschmidt
2011-06-09  5:07     ` Benjamin Herrenschmidt
2011-06-09 11:19   ` [tip:timers/cleanup] i8253: Alpha, PowerPC: Remove unused asm/8253pit.h tip-bot for Ralf Baechle
2011-06-09 13:07   ` tip-bot for Ralf Baechle
2011-06-01 18:05 ` [patch 10/14] i8253: x86: Consolidate definitions of global_clock_event ralf
2011-06-09 11:19   ` [tip:timers/cleanup] x86: i8253: " tip-bot for Ralf Baechle
2011-06-09 13:07   ` tip-bot for Ralf Baechle
2011-06-01 18:05 ` [patch 11/14] i8253: Consolidate definitions of PIT_LATCH ralf
2011-06-01 18:05   ` ralf at linux-mips.org
2011-06-01 18:05   ` ralf
2011-06-09 11:20   ` [tip:timers/cleanup] " tip-bot for Ralf Baechle
2011-06-09 13:07   ` tip-bot for Ralf Baechle
2011-06-01 18:05 ` [patch 12/14] i8253: Move remaining content and delete <asm/i8253.h> ralf
2011-06-01 18:05   ` ralf at linux-mips.org
2011-06-01 18:05   ` ralf
2011-06-02 11:29   ` Sergei Shtylyov
2011-06-02 11:29     ` Sergei Shtylyov
2011-06-09 11:20   ` [tip:timers/cleanup] i8253: Move remaining content and delete asm/i8253.h tip-bot for Ralf Baechle
2011-06-09 13:08   ` tip-bot for Ralf Baechle
2011-06-01 18:05 ` [patch 13/14] PCSPKR: Cleanup Kconfig dependencies ralf
2011-06-01 18:05   ` ralf
2011-06-09  5:09   ` Benjamin Herrenschmidt
2011-06-09  5:09     ` Benjamin Herrenschmidt
2011-06-09 11:21   ` [tip:timers/cleanup] pcspkr: " tip-bot for Ralf Baechle
2011-06-09 13:08   ` tip-bot for Ralf Baechle
2011-06-01 18:05 ` [patch 14/14] PCSPKR: MIPS: Make config dependencies finer grained ralf
2011-06-09 11:21   ` [tip:timers/cleanup] pcpskr: " tip-bot for Ralf Baechle
2011-06-09 13:09   ` tip-bot for Ralf Baechle
2011-06-02 19:11 ` [patch 00/14] Sort out i8253 and PC speaker locking and headers Gerhard Pircher
2011-06-03 18:00   ` Ralf Baechle
2011-06-03 18:00     ` Ralf Baechle
2011-06-03 19:22     ` Gerhard Pircher
2011-06-03 19:22       ` Gerhard Pircher

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