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: 1633 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
#
next prev parent reply other threads:[~2011-06-01 19:47 UTC|newest]
Thread overview: 39+ 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 ` ralf
2011-06-01 18:04 ` [patch 01/14] i8253: Create <linux/i8253.h> and make all in kernel users to use it ralf
2011-06-01 18:04 ` ralf
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
2011-06-01 18:04 ` ralf [this message]
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
2011-06-01 18:05 ` ralf
2011-06-01 18:05 ` [patch 07/14] i8253: Make pcsp sound " ralf
2011-06-01 18:05 ` ralf
2011-06-03 9:53 ` Takashi Iwai
2011-06-03 9:53 ` [alsa-devel] " Takashi Iwai
2011-06-01 18:05 ` [patch 08/14] i8253: Alpha: Cleanup remaining users of i8253pit.h ralf
2011-06-01 18:05 ` ralf
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
2011-06-01 18:05 ` [patch 10/14] i8253: x86: Consolidate definitions of global_clock_event ralf
2011-06-01 18:05 ` ralf
2011-06-01 18:05 ` [patch 11/14] i8253: Consolidate definitions of PIT_LATCH ralf
2011-06-01 18:05 ` ralf
2011-06-01 18:05 ` [patch 12/14] i8253: Move remaining content and delete <asm/i8253.h> ralf
2011-06-01 18:05 ` ralf
2011-06-02 11:29 ` Sergei Shtylyov
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
2011-06-01 18:05 ` [patch 14/14] PCSPKR: MIPS: Make config dependencies finer grained ralf
2011-06-01 18:05 ` ralf
2011-06-02 19:11 ` [patch 00/14] Sort out i8253 and PC speaker locking and headers Gerhard Pircher
2011-06-02 19:11 ` Gerhard Pircher
2011-06-03 18:00 ` Ralf Baechle
2011-06-03 18:00 ` Ralf Baechle
2011-06-03 19:22 ` Gerhard Pircher
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