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-rw-r--r--arch/mips/Kconfig9
-rw-r--r--arch/mips/basler/excite/excite_flashtest.c294
-rw-r--r--arch/mips/configs/atlas_defconfig3
-rw-r--r--arch/mips/configs/bigsur_defconfig3
-rw-r--r--arch/mips/configs/capcella_defconfig3
-rw-r--r--arch/mips/configs/cobalt_defconfig3
-rw-r--r--arch/mips/configs/db1000_defconfig3
-rw-r--r--arch/mips/configs/db1100_defconfig3
-rw-r--r--arch/mips/configs/db1200_defconfig3
-rw-r--r--arch/mips/configs/db1500_defconfig3
-rw-r--r--arch/mips/configs/db1550_defconfig3
-rw-r--r--arch/mips/configs/ddb5477_defconfig3
-rw-r--r--arch/mips/configs/decstation_defconfig3
-rw-r--r--arch/mips/configs/e55_defconfig2
-rw-r--r--arch/mips/configs/emma2rh_defconfig3
-rw-r--r--arch/mips/configs/ev64120_defconfig3
-rw-r--r--arch/mips/configs/excite_defconfig3
-rw-r--r--arch/mips/configs/ip22_defconfig3
-rw-r--r--arch/mips/configs/ip27_defconfig3
-rw-r--r--arch/mips/configs/ip32_defconfig3
-rw-r--r--arch/mips/configs/it8172_defconfig3
-rw-r--r--arch/mips/configs/ivr_defconfig3
-rw-r--r--arch/mips/configs/jaguar-atx_defconfig3
-rw-r--r--arch/mips/configs/jmr3927_defconfig3
-rw-r--r--arch/mips/configs/lasat200_defconfig3
-rw-r--r--arch/mips/configs/malta_defconfig3
-rw-r--r--arch/mips/configs/mipssim_defconfig3
-rw-r--r--arch/mips/configs/mpc30x_defconfig2
-rw-r--r--arch/mips/configs/ocelot_3_defconfig3
-rw-r--r--arch/mips/configs/ocelot_c_defconfig3
-rw-r--r--arch/mips/configs/ocelot_defconfig3
-rw-r--r--arch/mips/configs/ocelot_g_defconfig3
-rw-r--r--arch/mips/configs/pb1100_defconfig3
-rw-r--r--arch/mips/configs/pb1500_defconfig3
-rw-r--r--arch/mips/configs/pb1550_defconfig3
-rw-r--r--arch/mips/configs/pnx8550-jbs_defconfig3
-rw-r--r--arch/mips/configs/pnx8550-v2pci_defconfig3
-rw-r--r--arch/mips/configs/qemu_defconfig3
-rw-r--r--arch/mips/configs/rbhma4500_defconfig3
-rw-r--r--arch/mips/configs/rm200_defconfig3
-rw-r--r--arch/mips/configs/sb1250-swarm_defconfig3
-rw-r--r--arch/mips/configs/sead_defconfig3
-rw-r--r--arch/mips/configs/tb0226_defconfig3
-rw-r--r--arch/mips/configs/tb0229_defconfig3
-rw-r--r--arch/mips/configs/tb0287_defconfig3
-rw-r--r--arch/mips/configs/workpad_defconfig2
-rw-r--r--arch/mips/configs/wrppmc_defconfig3
-rw-r--r--arch/mips/configs/yosemite_defconfig3
-rw-r--r--arch/mips/defconfig3
-rw-r--r--arch/mips/kernel/Makefile1
-rw-r--r--arch/mips/kernel/genex.S8
-rw-r--r--arch/mips/kernel/i8259.c4
-rw-r--r--arch/mips/kernel/process.c37
-rw-r--r--arch/mips/kernel/scall32-o32.S13
-rw-r--r--arch/mips/kernel/scall64-64.S2
-rw-r--r--arch/mips/kernel/scall64-n32.S2
-rw-r--r--arch/mips/kernel/scall64-o32.S2
-rw-r--r--arch/mips/kernel/stacktrace.c85
-rw-r--r--arch/mips/kernel/traps.c40
-rw-r--r--arch/mips/mm/c-r3k.c21
-rw-r--r--arch/mips/mm/c-r4k.c77
-rw-r--r--arch/mips/mm/c-sb1.c61
-rw-r--r--arch/mips/mm/c-tx39.c29
-rw-r--r--arch/mips/mm/cache.c1
-rw-r--r--arch/mips/mm/tlbex-fault.S4
-rw-r--r--include/asm-mips/cacheflush.h2
-rw-r--r--include/asm-mips/galileo-boards/ev96100.h55
-rw-r--r--include/asm-mips/galileo-boards/ev96100int.h12
-rw-r--r--include/asm-mips/irqflags.h25
-rw-r--r--include/asm-mips/mach-ev64120/mach-gt64120.h1
-rw-r--r--include/asm-mips/serial.h17
-rw-r--r--include/asm-mips/stacktrace.h44
72 files changed, 359 insertions, 625 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 30750c54bdf..87cee341eb5 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -537,6 +537,7 @@ config QEMU
select SYS_HAS_CPU_MIPS32_R1
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_BIG_ENDIAN
+ select SYS_SUPPORTS_LITTLE_ENDIAN
select ARCH_SPARSEMEM_ENABLE
help
Qemu is a software emulator which among other architectures also
@@ -1841,6 +1842,14 @@ config RWSEM_GENERIC_SPINLOCK
bool
default y
+config LOCKDEP_SUPPORT
+ bool
+ default y
+
+config STACKTRACE_SUPPORT
+ bool
+ default y
+
source "init/Kconfig"
menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
diff --git a/arch/mips/basler/excite/excite_flashtest.c b/arch/mips/basler/excite/excite_flashtest.c
deleted file mode 100644
index f0024a8e329..00000000000
--- a/arch/mips/basler/excite/excite_flashtest.c
+++ /dev/null
@@ -1,294 +0,0 @@
-/*
-* Copyright (C) 2005 by Basler Vision Technologies AG
-* Author: Thies Moeller <thies.moeller@baslerweb.com>
-*
-* This program is free software; you can redistribute it and/or modify
-* it under the terms of the GNU General Public License as published by
-* the Free Software Foundation; either version 2 of the License, or
-* (at your option) any later version.
-*
-* This program is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-* GNU General Public License for more details.
-*
-* You should have received a copy of the GNU General Public License
-* along with this program; if not, write to the Free Software
-* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-*/
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/ioport.h>
-#include <linux/device.h>
-#include <linux/delay.h>
-#include <linux/err.h>
-#include <linux/kernel.h>
-
-#include <excite.h>
-
-#include <asm/io.h>
-
-#include <linux/mtd/mtd.h>
-#include <linux/mtd/nand.h>
-#include <linux/mtd/nand_ecc.h>
-#include <linux/mtd/partitions.h>
-#include <asm/rm9k-ocd.h> // for ocd_write
-#include <linux/workqueue.h> // for queue
-
-#include "excite_nandflash.h"
-#include "nandflash.h"
-
-#define PFX "excite flashtest: "
-typedef void __iomem *io_reg_t;
-
-#define io_readb(__a__) __raw_readb((__a__))
-#define io_writeb(__v__, __a__) __raw_writeb((__v__), (__a__))
-
-
-
-static inline const struct resource *excite_nandflash_get_resource(
- struct platform_device *d, unsigned long flags, const char *basename)
-{
- const char fmt[] = "%s_%u";
- char buf[80];
-
- if (unlikely(snprintf(buf, sizeof buf, fmt, basename, d->id) >= sizeof buf))
- return NULL;
-
- return platform_get_resource_byname(d, flags, buf);
-}
-
-static inline io_reg_t
-excite_nandflash_map_regs(struct platform_device *d, const char *basename)
-{
- void *result = NULL;
- const struct resource *const r =
- excite_nandflash_get_resource(d, IORESOURCE_MEM, basename);
- if (r)
- result = ioremap_nocache(r->start, r->end + 1 - r->start);
- return result;
-}
-
-/* controller and mtd information */
-
-struct excite_nandflash_drvdata {
- struct mtd_info board_mtd;
- struct nand_chip board_chip;
- io_reg_t regs;
-};
-
-
-/* command and control functions */
-static void excite_nandflash_hwcontrol(struct mtd_info *mtd, int cmd)
-{
- struct nand_chip *this = mtd->priv;
- io_reg_t regs = container_of(mtd,struct excite_nandflash_drvdata,board_mtd)->regs;
-
- switch (cmd) {
- /* Select the command latch */
- case NAND_CTL_SETCLE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_CMD;
- break;
- /* Deselect the command latch */
- case NAND_CTL_CLRCLE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_DATA;
- break;
- /* Select the address latch */
- case NAND_CTL_SETALE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_ADDR;
- break;
- /* Deselect the address latch */
- case NAND_CTL_CLRALE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_DATA;
- break;
- /* Select the chip -- not used */
- case NAND_CTL_SETNCE:
- break;
- /* Deselect the chip -- not used */
- case NAND_CTL_CLRNCE:
- break;
- }
-
- this->IO_ADDR_R = this->IO_ADDR_W;
-}
-
-/* excite_nandflash_devready()
- *
- * returns 0 if the nand is busy, 1 if it is ready
- */
-static int excite_nandflash_devready(struct mtd_info *mtd)
-{
- struct excite_nandflash_drvdata *drvdata =
- container_of(mtd, struct excite_nandflash_drvdata, board_mtd);
-
- return io_readb(drvdata->regs + EXCITE_NANDFLASH_STATUS);
-}
-
-/* device management functions */
-
-/* excite_nandflash_remove
- *
- * called by device layer to remove the driver
- * the binding to the mtd and all allocated
- * resources are released
- */
-static int excite_nandflash_remove(struct device *dev)
-{
- struct excite_nandflash_drvdata *this = dev_get_drvdata(dev);
-
- pr_info(PFX "remove");
-
- dev_set_drvdata(dev, NULL);
-
- if (this == NULL) {
- pr_debug(PFX "call remove without private data!!");
- return 0;
- }
-
-
- /* free the common resources */
- if (this->regs != NULL) {
- iounmap(this->regs);
- this->regs = NULL;
- }
-
- kfree(this);
-
- return 0;
-}
-
-static int elapsed;
-
-void my_workqueue_handler(void *arg)
-{
- elapsed = 1;
-}
-
-DECLARE_WORK(sigElapsed, my_workqueue_handler, 0);
-
-
-/* excite_nandflash_probe
- *
- * called by device layer when it finds a device matching
- * one our driver can handled. This code checks to see if
- * it can allocate all necessary resources then calls the
- * nand layer to look for devices
-*/
-static int excite_nandflash_probe(struct device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev);
-
- struct excite_nandflash_drvdata *drvdata; /* private driver data */
- struct nand_chip *board_chip; /* private flash chip data */
- struct mtd_info *board_mtd; /* mtd info for this board */
-
- int err = 0;
- int count = 0;
- struct timeval tv,endtv;
- unsigned int dt;
-
- pr_info(PFX "probe dev: (%p)\n", dev);
-
- pr_info(PFX "adjust LB timing\n");
- ocd_writel(0x00000330, LDP2);
-
- drvdata = kmalloc(sizeof(*drvdata), GFP_KERNEL);
- if (unlikely(!drvdata)) {
- printk(KERN_ERR PFX "no memory for drvdata\n");
- err = -ENOMEM;
- goto mem_error;
- }
-
- /* Initialize structures */
- memset(drvdata, 0, sizeof(*drvdata));
-
- /* bind private data into driver */
- dev_set_drvdata(dev, drvdata);
-
- /* allocate and map the resource */
- drvdata->regs =
- excite_nandflash_map_regs(pdev, EXCITE_NANDFLASH_RESOURCE_REGS);
-
- if (unlikely(!drvdata->regs)) {
- printk(KERN_ERR PFX "cannot reserve register region\n");
- err = -ENXIO;
- goto io_error;
- }
-
- /* initialise our chip */
- board_chip = &drvdata->board_chip;
-
- board_chip->IO_ADDR_R = drvdata->regs + EXCITE_NANDFLASH_DATA;
- board_chip->IO_ADDR_W = drvdata->regs + EXCITE_NANDFLASH_DATA;
-
- board_chip->hwcontrol = excite_nandflash_hwcontrol;
- board_chip->dev_ready = excite_nandflash_devready;
-
- board_chip->chip_delay = 25;
- #if 0
- /* TODO: speedup the initial scan */
- board_chip->options = NAND_USE_FLASH_BBT;
- #endif
- board_chip->eccmode = NAND_ECC_SOFT;
-
- /* link chip to mtd */
- board_mtd = &drvdata->board_mtd;
- board_mtd->priv = board_chip;
-
-
- pr_info(PFX "FlashTest\n");
- elapsed = 0;
-/* schedule_delayed_work(&sigElapsed, 1*HZ);
- while (!elapsed) {
- io_readb(drvdata->regs + EXCITE_NANDFLASH_STATUS);
- count++;
- }
- pr_info(PFX "reads in 1 sec --> %d\n",count);
-*/
- do_gettimeofday(&tv);
- for (count = 0 ; count < 1000000; count ++) {
- io_readb(drvdata->regs + EXCITE_NANDFLASH_STATUS);
- }
- do_gettimeofday(&endtv);
- dt = (endtv.tv_sec - tv.tv_sec) * 1000000 + endtv.tv_usec - tv.tv_usec;
- pr_info(PFX "%8d us timeval\n",dt);
- pr_info(PFX "EndFlashTest\n");
-
-/* return with error to unload everything
-*/
-io_error:
- iounmap(drvdata->regs);
-
-mem_error:
- kfree(drvdata);
-
- if (err == 0)
- err = -EINVAL;
- return err;
-}
-
-static struct device_driver excite_nandflash_driver = {
- .name = "excite_nand",
- .bus = &platform_bus_type,
- .probe = excite_nandflash_probe,
- .remove = excite_nandflash_remove,
-};
-
-static int __init excite_nandflash_init(void)
-{
- pr_info(PFX "register Driver (Rev: $Revision:$)\n");
- return driver_register(&excite_nandflash_driver);
-}
-
-static void __exit excite_nandflash_exit(void)
-{
- driver_unregister(&excite_nandflash_driver);
- pr_info(PFX "Driver unregistered");
-}
-
-module_init(excite_nandflash_init);
-module_exit(excite_nandflash_exit);
-
-MODULE_AUTHOR("Thies Moeller <thies.moeller@baslerweb.com>");
-MODULE_DESCRIPTION("Basler eXcite NAND-Flash driver");
-MODULE_LICENSE("GPL");
diff --git a/arch/mips/configs/atlas_defconfig b/arch/mips/configs/atlas_defconfig
index d3705284de3..35931bedc3d 100644
--- a/arch/mips/configs/atlas_defconfig
+++ b/arch/mips/configs/atlas_defconfig
@@ -161,6 +161,8 @@ CONFIG_HZ=100
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1304,6 +1306,7 @@ CONFIG_NLS_UTF8=m
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/bigsur_defconfig b/arch/mips/configs/bigsur_defconfig
index e12a475dcbf..c6a015940b4 100644
--- a/arch/mips/configs/bigsur_defconfig
+++ b/arch/mips/configs/bigsur_defconfig
@@ -167,6 +167,8 @@ CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
# CONFIG_PREEMPT_BKL is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -904,6 +906,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_PRINTK_TIME=y
CONFIG_MAGIC_SYSRQ=y
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/capcella_defconfig b/arch/mips/configs/capcella_defconfig
index bfade9abb76..e5358121d2d 100644
--- a/arch/mips/configs/capcella_defconfig
+++ b/arch/mips/configs/capcella_defconfig
@@ -149,6 +149,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -891,6 +893,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/cobalt_defconfig b/arch/mips/configs/cobalt_defconfig
index 4baf2ff1128..adf1e8c98c6 100644
--- a/arch/mips/configs/cobalt_defconfig
+++ b/arch/mips/configs/cobalt_defconfig
@@ -146,6 +146,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -889,6 +891,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/db1000_defconfig b/arch/mips/configs/db1000_defconfig
index 93cca1585bc..4fd29ffdfb8 100644
--- a/arch/mips/configs/db1000_defconfig
+++ b/arch/mips/configs/db1000_defconfig
@@ -147,6 +147,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1006,6 +1008,7 @@ CONFIG_NLS_DEFAULT="iso8859-1"
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/db1100_defconfig b/arch/mips/configs/db1100_defconfig
index ffd99252a83..025b960ba99 100644
--- a/arch/mips/configs/db1100_defconfig
+++ b/arch/mips/configs/db1100_defconfig
@@ -147,6 +147,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1006,6 +1008,7 @@ CONFIG_NLS_DEFAULT="iso8859-1"
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/db1200_defconfig b/arch/mips/configs/db1200_defconfig
index 63eac5e89b9..80c9dd98f89 100644
--- a/arch/mips/configs/db1200_defconfig
+++ b/arch/mips/configs/db1200_defconfig
@@ -147,6 +147,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1087,6 +1089,7 @@ CONFIG_NLS_UTF8=m
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/db1500_defconfig b/arch/mips/configs/db1500_defconfig
index 25a095f7dc4..6caa90b0e17 100644
--- a/arch/mips/configs/db1500_defconfig
+++ b/arch/mips/configs/db1500_defconfig
@@ -149,6 +149,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1290,6 +1292,7 @@ CONFIG_NLS_DEFAULT="iso8859-1"
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/db1550_defconfig b/arch/mips/configs/db1550_defconfig
index dda469c842b..c6cae86c6ab 100644
--- a/arch/mips/configs/db1550_defconfig
+++ b/arch/mips/configs/db1550_defconfig
@@ -148,6 +148,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1111,6 +1113,7 @@ CONFIG_NLS_DEFAULT="iso8859-1"
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/ddb5477_defconfig b/arch/mips/configs/ddb5477_defconfig
index fcd3dd19bc7..72f24001c99 100644
--- a/arch/mips/configs/ddb5477_defconfig
+++ b/arch/mips/configs/ddb5477_defconfig
@@ -146,6 +146,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -852,6 +854,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/decstation_defconfig b/arch/mips/configs/decstation_defconfig
index 8683e0df12e..be901df7fef 100644
--- a/arch/mips/configs/decstation_defconfig
+++ b/arch/mips/configs/decstation_defconfig
@@ -147,6 +147,8 @@ CONFIG_HZ=128
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -828,6 +830,7 @@ CONFIG_ULTRIX_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
CONFIG_MAGIC_SYSRQ=y
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/e55_defconfig b/arch/mips/configs/e55_defconfig
index 4ace61c9577..6133c28beb8 100644
--- a/arch/mips/configs/e55_defconfig
+++ b/arch/mips/configs/e55_defconfig
@@ -147,6 +147,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
diff --git a/arch/mips/configs/emma2rh_defconfig b/arch/mips/configs/emma2rh_defconfig
index 5847c916c13..a484b7d396f 100644
--- a/arch/mips/configs/emma2rh_defconfig
+++ b/arch/mips/configs/emma2rh_defconfig
@@ -147,6 +147,8 @@ CONFIG_HZ=1000
# CONFIG_PREEMPT_VOLUNTARY is not set
CONFIG_PREEMPT=y
CONFIG_PREEMPT_BKL=y
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1180,6 +1182,7 @@ CONFIG_NLS_UTF8=m
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/ev64120_defconfig b/arch/mips/configs/ev64120_defconfig
index bc4c4f125c4..21bfcdebf8f 100644
--- a/arch/mips/configs/ev64120_defconfig
+++ b/arch/mips/configs/ev64120_defconfig
@@ -148,6 +148,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -842,6 +844,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/excite_defconfig b/arch/mips/configs/excite_defconfig
index eb87cbbfd03..1a5b06cfb4d 100644
--- a/arch/mips/configs/excite_defconfig
+++ b/arch/mips/configs/excite_defconfig
@@ -149,6 +149,8 @@ CONFIG_HZ=1000
# CONFIG_PREEMPT_VOLUNTARY is not set
CONFIG_PREEMPT=y
CONFIG_PREEMPT_BKL=y
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1184,6 +1186,7 @@ CONFIG_NLS_ISO8859_1=m
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/ip22_defconfig b/arch/mips/configs/ip22_defconfig
index cc9b24eda9e..21d53e0c9ee 100644
--- a/arch/mips/configs/ip22_defconfig
+++ b/arch/mips/configs/ip22_defconfig
@@ -153,6 +153,8 @@ CONFIG_HZ=1000
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1147,6 +1149,7 @@ CONFIG_NLS_UTF8=m
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/ip27_defconfig b/arch/mips/configs/ip27_defconfig
index 50092ba8aa7..e3e94c7e5ee 100644
--- a/arch/mips/configs/ip27_defconfig
+++ b/arch/mips/configs/ip27_defconfig
@@ -162,6 +162,8 @@ CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT is not set
CONFIG_PREEMPT_BKL=y
# CONFIG_MIPS_INSANE_LARGE is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -980,6 +982,7 @@ CONFIG_SGI_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/ip32_defconfig b/arch/mips/configs/ip32_defconfig
index dec2ba6ba03..b4ab2bea972 100644
--- a/arch/mips/configs/ip32_defconfig
+++ b/arch/mips/configs/ip32_defconfig
@@ -153,6 +153,8 @@ CONFIG_HZ=1000
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -922,6 +924,7 @@ CONFIG_SGI_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/it8172_defconfig b/arch/mips/configs/it8172_defconfig
index 37f9dd7187b..18d20fb7d5f 100644
--- a/arch/mips/configs/it8172_defconfig
+++ b/arch/mips/configs/it8172_defconfig
@@ -147,6 +147,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -900,6 +902,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/ivr_defconfig b/arch/mips/configs/ivr_defconfig
index 18874a4c24f..99831d0bf76 100644
--- a/arch/mips/configs/ivr_defconfig
+++ b/arch/mips/configs/ivr_defconfig
@@ -144,6 +144,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -856,6 +858,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/jaguar-atx_defconfig b/arch/mips/configs/jaguar-atx_defconfig
index 9f1e3048d62..9d4d17ace12 100644
--- a/arch/mips/configs/jaguar-atx_defconfig
+++ b/arch/mips/configs/jaguar-atx_defconfig
@@ -153,6 +153,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -775,6 +777,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/jmr3927_defconfig b/arch/mips/configs/jmr3927_defconfig
index fded3f73815..d03746667a9 100644
--- a/arch/mips/configs/jmr3927_defconfig
+++ b/arch/mips/configs/jmr3927_defconfig
@@ -143,6 +143,8 @@ CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
CONFIG_RTC_DS1742=y
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -872,6 +874,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/lasat200_defconfig b/arch/mips/configs/lasat200_defconfig
index 320b8cdd6e5..1db8249b4c0 100644
--- a/arch/mips/configs/lasat200_defconfig
+++ b/arch/mips/configs/lasat200_defconfig
@@ -151,6 +151,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -970,6 +972,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/malta_defconfig b/arch/mips/configs/malta_defconfig
index 0ba1ef5048f..aeefe2873e3 100644
--- a/arch/mips/configs/malta_defconfig
+++ b/arch/mips/configs/malta_defconfig
@@ -170,6 +170,8 @@ CONFIG_HZ=100
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1341,6 +1343,7 @@ CONFIG_NLS_UTF8=m
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/mipssim_defconfig b/arch/mips/configs/mipssim_defconfig
index adbeeadddb8..a3cbd23bf21 100644
--- a/arch/mips/configs/mipssim_defconfig
+++ b/arch/mips/configs/mipssim_defconfig
@@ -148,6 +148,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -799,6 +801,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/mpc30x_defconfig b/arch/mips/configs/mpc30x_defconfig
index 79fd544fcb2..6570b47426c 100644
--- a/arch/mips/configs/mpc30x_defconfig
+++ b/arch/mips/configs/mpc30x_defconfig
@@ -148,6 +148,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
diff --git a/arch/mips/configs/ocelot_3_defconfig b/arch/mips/configs/ocelot_3_defconfig
index 4d87da2b99f..440d65f93a9 100644
--- a/arch/mips/configs/ocelot_3_defconfig
+++ b/arch/mips/configs/ocelot_3_defconfig
@@ -153,6 +153,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1091,6 +1093,7 @@ CONFIG_NLS_DEFAULT="iso8859-1"
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/ocelot_c_defconfig b/arch/mips/configs/ocelot_c_defconfig
index a7ac2b0a827..c2c7ae77da3 100644
--- a/arch/mips/configs/ocelot_c_defconfig
+++ b/arch/mips/configs/ocelot_c_defconfig
@@ -150,6 +150,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -839,6 +841,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/ocelot_defconfig b/arch/mips/configs/ocelot_defconfig
index 853e7bba512..67efe270e0c 100644
--- a/arch/mips/configs/ocelot_defconfig
+++ b/arch/mips/configs/ocelot_defconfig
@@ -154,6 +154,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -788,6 +790,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/ocelot_g_defconfig b/arch/mips/configs/ocelot_g_defconfig
index 8524efa23a4..a10f34de5f7 100644
--- a/arch/mips/configs/ocelot_g_defconfig
+++ b/arch/mips/configs/ocelot_g_defconfig
@@ -153,6 +153,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -842,6 +844,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/pb1100_defconfig b/arch/mips/configs/pb1100_defconfig
index 1a16e92900c..741f8258075 100644
--- a/arch/mips/configs/pb1100_defconfig
+++ b/arch/mips/configs/pb1100_defconfig
@@ -149,6 +149,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1000,6 +1002,7 @@ CONFIG_NLS_DEFAULT="iso8859-1"
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/pb1500_defconfig b/arch/mips/configs/pb1500_defconfig
index 9ea8edea6f2..8576340714d 100644
--- a/arch/mips/configs/pb1500_defconfig
+++ b/arch/mips/configs/pb1500_defconfig
@@ -148,6 +148,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1106,6 +1108,7 @@ CONFIG_NLS_DEFAULT="iso8859-1"
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/pb1550_defconfig b/arch/mips/configs/pb1550_defconfig
index c4a158976f8..3db7427d1b5 100644
--- a/arch/mips/configs/pb1550_defconfig
+++ b/arch/mips/configs/pb1550_defconfig
@@ -148,6 +148,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1098,6 +1100,7 @@ CONFIG_NLS_DEFAULT="iso8859-1"
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/pnx8550-jbs_defconfig b/arch/mips/configs/pnx8550-jbs_defconfig
index 1cbf270c301..26b0b988349 100644
--- a/arch/mips/configs/pnx8550-jbs_defconfig
+++ b/arch/mips/configs/pnx8550-jbs_defconfig
@@ -153,6 +153,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -876,6 +878,7 @@ CONFIG_NLS_DEFAULT="iso8859-1"
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
CONFIG_MAGIC_SYSRQ=y
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/pnx8550-v2pci_defconfig b/arch/mips/configs/pnx8550-v2pci_defconfig
index bec30b15b9b..e93266b37dd 100644
--- a/arch/mips/configs/pnx8550-v2pci_defconfig
+++ b/arch/mips/configs/pnx8550-v2pci_defconfig
@@ -153,6 +153,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1057,6 +1059,7 @@ CONFIG_NLS_DEFAULT="iso8859-1"
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/qemu_defconfig b/arch/mips/configs/qemu_defconfig
index f5f799e9370..9b0dab822bd 100644
--- a/arch/mips/configs/qemu_defconfig
+++ b/arch/mips/configs/qemu_defconfig
@@ -145,6 +145,8 @@ CONFIG_HZ=100
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -733,6 +735,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/rbhma4500_defconfig b/arch/mips/configs/rbhma4500_defconfig
index 2f5650227ba..dd029603602 100644
--- a/arch/mips/configs/rbhma4500_defconfig
+++ b/arch/mips/configs/rbhma4500_defconfig
@@ -155,6 +155,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1335,6 +1337,7 @@ CONFIG_NLS_DEFAULT="iso8859-1"
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/rm200_defconfig b/arch/mips/configs/rm200_defconfig
index 4fee90b2b10..d8a498d64d6 100644
--- a/arch/mips/configs/rm200_defconfig
+++ b/arch/mips/configs/rm200_defconfig
@@ -158,6 +158,8 @@ CONFIG_HZ=1000
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1584,6 +1586,7 @@ CONFIG_NLS_UTF8=m
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/sb1250-swarm_defconfig b/arch/mips/configs/sb1250-swarm_defconfig
index 9041f095f96..805a4fe450f 100644
--- a/arch/mips/configs/sb1250-swarm_defconfig
+++ b/arch/mips/configs/sb1250-swarm_defconfig
@@ -171,6 +171,8 @@ CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
CONFIG_PREEMPT_BKL=y
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -873,6 +875,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/sead_defconfig b/arch/mips/configs/sead_defconfig
index 02abb2f1bfa..6fcb656d8d8 100644
--- a/arch/mips/configs/sead_defconfig
+++ b/arch/mips/configs/sead_defconfig
@@ -151,6 +151,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -581,6 +583,7 @@ CONFIG_PARTITION_ADVANCED=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/tb0226_defconfig b/arch/mips/configs/tb0226_defconfig
index ca3d0c4ba15..dc312f19ada 100644
--- a/arch/mips/configs/tb0226_defconfig
+++ b/arch/mips/configs/tb0226_defconfig
@@ -151,6 +151,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1059,6 +1061,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/tb0229_defconfig b/arch/mips/configs/tb0229_defconfig
index 4e2009ace27..85615d99b01 100644
--- a/arch/mips/configs/tb0229_defconfig
+++ b/arch/mips/configs/tb0229_defconfig
@@ -151,6 +151,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -968,6 +970,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/tb0287_defconfig b/arch/mips/configs/tb0287_defconfig
index 535a813d01a..ad7271b3f26 100644
--- a/arch/mips/configs/tb0287_defconfig
+++ b/arch/mips/configs/tb0287_defconfig
@@ -151,6 +151,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1146,6 +1148,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/workpad_defconfig b/arch/mips/configs/workpad_defconfig
index 3a3ef20b21c..863f6a7cadf 100644
--- a/arch/mips/configs/workpad_defconfig
+++ b/arch/mips/configs/workpad_defconfig
@@ -147,6 +147,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
diff --git a/arch/mips/configs/wrppmc_defconfig b/arch/mips/configs/wrppmc_defconfig
index e6b1dea5584..c10267d61cc 100644
--- a/arch/mips/configs/wrppmc_defconfig
+++ b/arch/mips/configs/wrppmc_defconfig
@@ -155,6 +155,8 @@ CONFIG_HZ=1000
CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -829,6 +831,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/configs/yosemite_defconfig b/arch/mips/configs/yosemite_defconfig
index 06a072b77b1..4d3c1329f3c 100644
--- a/arch/mips/configs/yosemite_defconfig
+++ b/arch/mips/configs/yosemite_defconfig
@@ -152,6 +152,8 @@ CONFIG_PREEMPT_NONE=y
# CONFIG_PREEMPT_VOLUNTARY is not set
# CONFIG_PREEMPT is not set
CONFIG_PREEMPT_BKL=y
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -760,6 +762,7 @@ CONFIG_MSDOS_PARTITION=y
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/defconfig b/arch/mips/defconfig
index cc9b24eda9e..21d53e0c9ee 100644
--- a/arch/mips/defconfig
+++ b/arch/mips/defconfig
@@ -153,6 +153,8 @@ CONFIG_HZ=1000
# CONFIG_PREEMPT_NONE is not set
CONFIG_PREEMPT_VOLUNTARY=y
# CONFIG_PREEMPT is not set
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_STACKTRACE_SUPPORT=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
#
@@ -1147,6 +1149,7 @@ CONFIG_NLS_UTF8=m
#
# Kernel hacking
#
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
# CONFIG_PRINTK_TIME is not set
# CONFIG_MAGIC_SYSRQ is not set
# CONFIG_UNUSED_SYMBOLS is not set
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index 881c467c698..cd9cec9e39e 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -11,6 +11,7 @@ obj-y += cpu-probe.o branch.o entry.o genex.o irq.o process.o \
binfmt_irix-objs := irixelf.o irixinv.o irixioctl.o irixsig.o \
irix5sys.o sysirix.o
+obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-$(CONFIG_MODULES) += mips_ksyms.o module.o
obj-$(CONFIG_APM) += apm.o
diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S
index 37fda3dcdfc..af6ef2fd830 100644
--- a/arch/mips/kernel/genex.S
+++ b/arch/mips/kernel/genex.S
@@ -220,8 +220,8 @@ NESTED(except_vec_vi_handler, 0, sp)
CLI
TRACE_IRQS_OFF
move a0, sp
- jalr v0
- j ret_from_irq
+ PTR_LA ra, ret_from_irq
+ jr v0
END(except_vec_vi_handler)
/*
@@ -349,8 +349,8 @@ NESTED(nmi_handler, PT_SIZE, sp)
.set at
__BUILD_\verbose \exception
move a0, sp
- jal do_\handler
- j ret_from_exception
+ PTR_LA ra, ret_from_exception
+ j do_\handler
END(handle_\exception)
.endm
diff --git a/arch/mips/kernel/i8259.c b/arch/mips/kernel/i8259.c
index ea36c8e8852..48e3418c217 100644
--- a/arch/mips/kernel/i8259.c
+++ b/arch/mips/kernel/i8259.c
@@ -302,11 +302,11 @@ static struct irqaction irq2 = {
};
static struct resource pic1_io_resource = {
- .name = "pic1", .start = 0x20, .end = 0x3f, .flags = IORESOURCE_BUSY
+ .name = "pic1", .start = 0x20, .end = 0x21, .flags = IORESOURCE_BUSY
};
static struct resource pic2_io_resource = {
- .name = "pic2", .start = 0xa0, .end = 0xbf, .flags = IORESOURCE_BUSY
+ .name = "pic2", .start = 0xa0, .end = 0xa1, .flags = IORESOURCE_BUSY
};
/*
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index 2613a0dd4b8..045d987bc68 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -40,6 +40,7 @@
#include <asm/elf.h>
#include <asm/isadep.h>
#include <asm/inst.h>
+#include <asm/stacktrace.h>
#ifdef CONFIG_MIPS_MT_SMTC
#include <asm/mipsmtregs.h>
extern void smtc_idle_loop_hook(void);
@@ -398,7 +399,7 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
#ifdef CONFIG_KALLSYMS
/* used by show_backtrace() */
unsigned long unwind_stack(struct task_struct *task, unsigned long *sp,
- unsigned long pc, unsigned long ra)
+ unsigned long pc, unsigned long *ra)
{
unsigned long stack_page;
struct mips_frame_info info;
@@ -406,18 +407,42 @@ unsigned long unwind_stack(struct task_struct *task, unsigned long *sp,
char namebuf[KSYM_NAME_LEN + 1];
unsigned long size, ofs;
int leaf;
+ extern void ret_from_irq(void);
+ extern void ret_from_exception(void);
stack_page = (unsigned long)task_stack_page(task);
if (!stack_page)
return 0;
+ /*
+ * If we reached the bottom of interrupt context,
+ * return saved pc in pt_regs.
+ */
+ if (pc == (unsigned long)ret_from_irq ||
+ pc == (unsigned long)ret_from_exception) {
+ struct pt_regs *regs;
+ if (*sp >= stack_page &&
+ *sp + sizeof(*regs) <= stack_page + THREAD_SIZE - 32) {
+ regs = (struct pt_regs *)*sp;
+ pc = regs->cp0_epc;
+ if (__kernel_text_address(pc)) {
+ *sp = regs->regs[29];
+ *ra = regs->regs[31];
+ return pc;
+ }
+ }
+ return 0;
+ }
if (!kallsyms_lookup(pc, &size, &ofs, &modname, namebuf))
return 0;
/*
* Return ra if an exception occured at the first instruction
*/
- if (unlikely(ofs == 0))
- return ra;
+ if (unlikely(ofs == 0)) {
+ pc = *ra;
+ *ra = 0;
+ return pc;
+ }
info.func = (void *)(pc - ofs);
info.func_size = ofs; /* analyze from start to ofs */
@@ -436,11 +461,12 @@ unsigned long unwind_stack(struct task_struct *task, unsigned long *sp,
* one. In that cases avoid to return always the
* same value.
*/
- pc = pc != ra ? ra : 0;
+ pc = pc != *ra ? *ra : 0;
else
pc = ((unsigned long *)(*sp))[info.pc_offset];
*sp += info.frame_size;
+ *ra = 0;
return __kernel_text_address(pc) ? pc : 0;
}
#endif
@@ -453,6 +479,7 @@ unsigned long get_wchan(struct task_struct *task)
unsigned long pc = 0;
#ifdef CONFIG_KALLSYMS
unsigned long sp;
+ unsigned long ra = 0;
#endif
if (!task || task == current || task->state == TASK_RUNNING)
@@ -466,7 +493,7 @@ unsigned long get_wchan(struct task_struct *task)
sp = task->thread.reg29 + schedule_mfi.frame_size;
while (in_sched_functions(pc))
- pc = unwind_stack(task, &sp, pc, 0);
+ pc = unwind_stack(task, &sp, pc, &ra);
#endif
out:
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index e7178510220..61362e6fa9e 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -28,18 +28,7 @@
NESTED(handle_sys, PT_SIZE, sp)
.set noat
SAVE_SOME
-#ifdef CONFIG_TRACE_IRQFLAGS
- TRACE_IRQS_ON
-#ifdef CONFIG_64BIT
- LONG_L $8, PT_R8(sp)
- LONG_L $9, PT_R9(sp)
-#endif
- LONG_L $7, PT_R7(sp)
- LONG_L $6, PT_R6(sp)
- LONG_L $5, PT_R5(sp)
- LONG_L $4, PT_R4(sp)
- LONG_L $2, PT_R2(sp)
-#endif
+ TRACE_IRQS_ON_RELOAD
STI
.set at
diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
index 4c22d0b4825..6c7b5ed0ea6 100644
--- a/arch/mips/kernel/scall64-64.S
+++ b/arch/mips/kernel/scall64-64.S
@@ -34,7 +34,7 @@ NESTED(handle_sys64, PT_SIZE, sp)
*/
.set noat
SAVE_SOME
- TRACE_IRQS_ON
+ TRACE_IRQS_ON_RELOAD
STI
.set at
#endif
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index f25c2a2f103..6d9f18727ac 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -33,7 +33,7 @@ NESTED(handle_sysn32, PT_SIZE, sp)
#ifndef CONFIG_MIPS32_O32
.set noat
SAVE_SOME
- TRACE_IRQS_ON
+ TRACE_IRQS_ON_RELOAD
STI
.set at
#endif
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 288ee4ac4db..2e6d0673163 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -28,7 +28,7 @@
NESTED(handle_sys, PT_SIZE, sp)
.set noat
SAVE_SOME
- TRACE_IRQS_ON
+ TRACE_IRQS_ON_RELOAD
STI
.set at
ld t1, PT_EPC(sp) # skip syscall on return
diff --git a/arch/mips/kernel/stacktrace.c b/arch/mips/kernel/stacktrace.c
new file mode 100644
index 00000000000..4aabe526a68
--- /dev/null
+++ b/arch/mips/kernel/stacktrace.c
@@ -0,0 +1,85 @@
+/*
+ * arch/mips/kernel/stacktrace.c
+ *
+ * Stack trace management functions
+ *
+ * Copyright (C) 2006 Atsushi Nemoto <anemo@mba.ocn.ne.jp>
+ */
+#include <linux/sched.h>
+#include <linux/stacktrace.h>
+#include <asm/stacktrace.h>
+
+/*
+ * Save stack-backtrace addresses into a stack_trace buffer:
+ */
+static void save_raw_context_stack(struct stack_trace *trace,
+ unsigned long reg29)
+{
+ unsigned long *sp = (unsigned long *)reg29;
+ unsigned long addr;
+
+ while (!kstack_end(sp)) {
+ addr = *sp++;
+ if (__kernel_text_address(addr)) {
+ if (trace->skip > 0)
+ trace->skip--;
+ else
+ trace->entries[trace->nr_entries++] = addr;
+ if (trace->nr_entries >= trace->max_entries)
+ break;
+ }
+ }
+}
+
+static void save_context_stack(struct stack_trace *trace,
+ struct task_struct *task, struct pt_regs *regs)
+{
+ unsigned long sp = regs->regs[29];
+#ifdef CONFIG_KALLSYMS
+ unsigned long ra = regs->regs[31];
+ unsigned long pc = regs->cp0_epc;
+
+ if (raw_show_trace || !__kernel_text_address(pc)) {
+ unsigned long stack_page =
+ (unsigned long)task_stack_page(task);
+ if (stack_page && sp >= stack_page &&
+ sp <= stack_page + THREAD_SIZE - 32)
+ save_raw_context_stack(trace, sp);
+ return;
+ }
+ do {
+ if (trace->skip > 0)
+ trace->skip--;
+ else
+ trace->entries[trace->nr_entries++] = pc;
+ if (trace->nr_entries >= trace->max_entries)
+ break;
+ pc = unwind_stack(task, &sp, pc, &ra);
+ } while (pc);
+#else
+ save_raw_context_stack(sp);
+#endif
+}
+
+/*
+ * Save stack-backtrace addresses into a stack_trace buffer.
+ */
+void save_stack_trace(struct stack_trace *trace, struct task_struct *task)
+{
+ struct pt_regs dummyregs;
+ struct pt_regs *regs = &dummyregs;
+
+ WARN_ON(trace->nr_entries || !trace->max_entries);
+
+ if (task && task != current) {
+ regs->regs[29] = task->thread.reg29;
+ regs->regs[31] = 0;
+ regs->cp0_epc = task->thread.reg31;
+ } else {
+ if (!task)
+ task = current;
+ prepare_frametrace(regs);
+ }
+
+ save_context_stack(trace, task, regs);
+}
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index e51d8fd9a15..b7292a56d4c 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -41,6 +41,7 @@
#include <asm/mmu_context.h>
#include <asm/watch.h>
#include <asm/types.h>
+#include <asm/stacktrace.h>
extern asmlinkage void handle_int(void);
extern asmlinkage void handle_tlbm(void);
@@ -92,16 +93,14 @@ static void show_raw_backtrace(unsigned long reg29)
}
#ifdef CONFIG_KALLSYMS
-static int raw_show_trace;
+int raw_show_trace;
static int __init set_raw_show_trace(char *str)
{
raw_show_trace = 1;
return 1;
}
__setup("raw_show_trace", set_raw_show_trace);
-
-extern unsigned long unwind_stack(struct task_struct *task, unsigned long *sp,
- unsigned long pc, unsigned long ra);
+#endif
static void show_backtrace(struct task_struct *task, struct pt_regs *regs)
{
@@ -116,14 +115,10 @@ static void show_backtrace(struct task_struct *task, struct pt_regs *regs)
printk("Call Trace:\n");
do {
print_ip_sym(pc);
- pc = unwind_stack(task, &sp, pc, ra);
- ra = 0;
+ pc = unwind_stack(task, &sp, pc, &ra);
} while (pc);
printk("\n");
}
-#else
-#define show_backtrace(task, r) show_raw_backtrace((r)->regs[29]);
-#endif
/*
* This routine abuses get_user()/put_user() to reference pointers
@@ -158,28 +153,6 @@ static void show_stacktrace(struct task_struct *task, struct pt_regs *regs)
show_backtrace(task, regs);
}
-static __always_inline void prepare_frametrace(struct pt_regs *regs)
-{
- __asm__ __volatile__(
- ".set push\n\t"
- ".set noat\n\t"
-#ifdef CONFIG_64BIT
- "1: dla $1, 1b\n\t"
- "sd $1, %0\n\t"
- "sd $29, %1\n\t"
- "sd $31, %2\n\t"
-#else
- "1: la $1, 1b\n\t"
- "sw $1, %0\n\t"
- "sw $29, %1\n\t"
- "sw $31, %2\n\t"
-#endif
- ".set pop\n\t"
- : "=m" (regs->cp0_epc),
- "=m" (regs->regs[29]), "=m" (regs->regs[31])
- : : "memory");
-}
-
void show_stack(struct task_struct *task, unsigned long *sp)
{
struct pt_regs regs;
@@ -206,11 +179,6 @@ void dump_stack(void)
{
struct pt_regs regs;
- /*
- * Remove any garbage that may be in regs (specially func
- * addresses) to avoid show_raw_backtrace() to report them
- */
- memset(&regs, 0, sizeof(regs));
prepare_frametrace(&regs);
show_backtrace(current, &regs);
}
diff --git a/arch/mips/mm/c-r3k.c b/arch/mips/mm/c-r3k.c
index e1f35ef8114..d1af42c2a52 100644
--- a/arch/mips/mm/c-r3k.c
+++ b/arch/mips/mm/c-r3k.c
@@ -268,26 +268,6 @@ static void r3k_flush_data_cache_page(unsigned long addr)
{
}
-static void r3k_flush_icache_page(struct vm_area_struct *vma, struct page *page)
-{
- struct mm_struct *mm = vma->vm_mm;
- unsigned long physpage;
-
- if (cpu_context(smp_processor_id(), mm) == 0)
- return;
-
- if (!(vma->vm_flags & VM_EXEC))
- return;
-
-#ifdef DEBUG_CACHE
- printk("cpage[%d,%08lx]", cpu_context(smp_processor_id(), mm), page);
-#endif
-
- physpage = (unsigned long) page_address(page);
- if (physpage)
- r3k_flush_icache_range(physpage, physpage + PAGE_SIZE);
-}
-
static void r3k_flush_cache_sigtramp(unsigned long addr)
{
unsigned long flags;
@@ -335,7 +315,6 @@ void __init r3k_cache_init(void)
flush_cache_mm = r3k_flush_cache_mm;
flush_cache_range = r3k_flush_cache_range;
flush_cache_page = r3k_flush_cache_page;
- __flush_icache_page = r3k_flush_icache_page;
flush_icache_range = r3k_flush_icache_range;
flush_cache_sigtramp = r3k_flush_cache_sigtramp;
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index 0b2da53750b..cc895dad71d 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -551,82 +551,6 @@ static void r4k_flush_icache_range(unsigned long start, unsigned long end)
instruction_hazard();
}
-/*
- * Ok, this seriously sucks. We use them to flush a user page but don't
- * know the virtual address, so we have to blast away the whole icache
- * which is significantly more expensive than the real thing. Otoh we at
- * least know the kernel address of the page so we can flush it
- * selectivly.
- */
-
-struct flush_icache_page_args {
- struct vm_area_struct *vma;
- struct page *page;
-};
-
-static inline void local_r4k_flush_icache_page(void *args)
-{
- struct flush_icache_page_args *fip_args = args;
- struct vm_area_struct *vma = fip_args->vma;
- struct page *page = fip_args->page;
-
- /*
- * Tricky ... Because we don't know the virtual address we've got the
- * choice of either invalidating the entire primary and secondary
- * caches or invalidating the secondary caches also. With the subset
- * enforcment on R4000SC, R4400SC, R10000 and R12000 invalidating the
- * secondary cache will result in any entries in the primary caches
- * also getting invalidated which hopefully is a bit more economical.
- */
- if (cpu_has_inclusive_pcaches) {
- unsigned long addr = (unsigned long) page_address(page);
-
- r4k_blast_scache_page(addr);
- ClearPageDcacheDirty(page);
-
- return;
- }
-
- if (!cpu_has_ic_fills_f_dc) {
- unsigned long addr = (unsigned long) page_address(page);
- r4k_blast_dcache_page(addr);
- if (!cpu_icache_snoops_remote_store)
- r4k_blast_scache_page(addr);
- ClearPageDcacheDirty(page);
- }
-
- /*
- * We're not sure of the virtual address(es) involved here, so
- * we have to flush the entire I-cache.
- */
- if (cpu_has_vtag_icache && vma->vm_mm == current->active_mm) {
- int cpu = smp_processor_id();
-
- if (cpu_context(cpu, vma->vm_mm) != 0)
- drop_mmu_context(vma->vm_mm, cpu);
- } else
- r4k_blast_icache();
-}
-
-static void r4k_flush_icache_page(struct vm_area_struct *vma,
- struct page *page)
-{
- struct flush_icache_page_args args;
-
- /*
- * If there's no context yet, or the page isn't executable, no I-cache
- * flush is needed.
- */
- if (!(vma->vm_flags & VM_EXEC))
- return;
-
- args.vma = vma;
- args.page = page;
-
- r4k_on_each_cpu(local_r4k_flush_icache_page, &args, 1, 1);
-}
-
-
#ifdef CONFIG_DMA_NONCOHERENT
static void r4k_dma_cache_wback_inv(unsigned long addr, unsigned long size)
@@ -1291,7 +1215,6 @@ void __init r4k_cache_init(void)
__flush_cache_all = r4k___flush_cache_all;
flush_cache_mm = r4k_flush_cache_mm;
flush_cache_page = r4k_flush_cache_page;
- __flush_icache_page = r4k_flush_icache_page;
flush_cache_range = r4k_flush_cache_range;
flush_cache_sigtramp = r4k_flush_cache_sigtramp;
diff --git a/arch/mips/mm/c-sb1.c b/arch/mips/mm/c-sb1.c
index 16bad7c0a63..5537558f19f 100644
--- a/arch/mips/mm/c-sb1.c
+++ b/arch/mips/mm/c-sb1.c
@@ -307,66 +307,6 @@ void sb1_flush_icache_range(unsigned long start, unsigned long end)
#endif
/*
- * Flush the icache for a given physical page. Need to writeback the
- * dcache first, then invalidate the icache. If the page isn't
- * executable, nothing is required.
- */
-static void local_sb1_flush_icache_page(struct vm_area_struct *vma,
- struct page *page)
-{
- unsigned long start;
- int cpu = smp_processor_id();
-
-#ifndef CONFIG_SMP
- if (!(vma->vm_flags & VM_EXEC))
- return;
-#endif
-
- /* Need to writeback any dirty data for that page, we have the PA */
- start = (unsigned long)(page-mem_map) << PAGE_SHIFT;
- __sb1_writeback_inv_dcache_phys_range(start, start + PAGE_SIZE);
- /*
- * If there's a context, bump the ASID (cheaper than a flush,
- * since we don't know VAs!)
- */
- if (vma->vm_mm == current->active_mm) {
- if (cpu_context(cpu, vma->vm_mm) != 0)
- drop_mmu_context(vma->vm_mm, cpu);
- } else
- __sb1_flush_icache_range(start, start + PAGE_SIZE);
-
-}
-
-#ifdef CONFIG_SMP
-struct flush_icache_page_args {
- struct vm_area_struct *vma;
- struct page *page;
-};
-
-static void sb1_flush_icache_page_ipi(void *info)
-{
- struct flush_icache_page_args *args = info;
- local_sb1_flush_icache_page(args->vma, args->page);
-}
-
-/* Dirty dcache could be on another CPU, so do the IPIs */
-static void sb1_flush_icache_page(struct vm_area_struct *vma,
- struct page *page)
-{
- struct flush_icache_page_args args;
-
- if (!(vma->vm_flags & VM_EXEC))
- return;
- args.vma = vma;
- args.page = page;
- on_each_cpu(sb1_flush_icache_page_ipi, (void *) &args, 1, 1);
-}
-#else
-void sb1_flush_icache_page(struct vm_area_struct *vma, struct page *page)
- __attribute__((alias("local_sb1_flush_icache_page")));
-#endif
-
-/*
* A signal trampoline must fit into a single cacheline.
*/
static void local_sb1_flush_cache_sigtramp(unsigned long addr)
@@ -526,7 +466,6 @@ void sb1_cache_init(void)
/* These routines are for Icache coherence with the Dcache */
flush_icache_range = sb1_flush_icache_range;
- __flush_icache_page = sb1_flush_icache_page;
flush_icache_all = __sb1_flush_icache_all; /* local only */
/* This implies an Icache flush too, so can't be nop'ed */
diff --git a/arch/mips/mm/c-tx39.c b/arch/mips/mm/c-tx39.c
index 932a09d7ef8..f32ebde30cc 100644
--- a/arch/mips/mm/c-tx39.c
+++ b/arch/mips/mm/c-tx39.c
@@ -248,33 +248,6 @@ static void tx39_flush_icache_range(unsigned long start, unsigned long end)
}
}
-/*
- * Ok, this seriously sucks. We use them to flush a user page but don't
- * know the virtual address, so we have to blast away the whole icache
- * which is significantly more expensive than the real thing. Otoh we at
- * least know the kernel address of the page so we can flush it
- * selectivly.
- */
-static void tx39_flush_icache_page(struct vm_area_struct *vma, struct page *page)
-{
- unsigned long addr;
- /*
- * If there's no context yet, or the page isn't executable, no icache
- * flush is needed.
- */
- if (!(vma->vm_flags & VM_EXEC))
- return;
-
- addr = (unsigned long) page_address(page);
- tx39_blast_dcache_page(addr);
-
- /*
- * We're not sure of the virtual address(es) involved here, so
- * we have to flush the entire I-cache.
- */
- tx39_blast_icache();
-}
-
static void tx39_dma_cache_wback_inv(unsigned long addr, unsigned long size)
{
unsigned long end;
@@ -382,7 +355,6 @@ void __init tx39_cache_init(void)
flush_cache_mm = (void *) tx39h_flush_icache_all;
flush_cache_range = (void *) tx39h_flush_icache_all;
flush_cache_page = (void *) tx39h_flush_icache_all;
- __flush_icache_page = (void *) tx39h_flush_icache_all;
flush_icache_range = (void *) tx39h_flush_icache_all;
flush_cache_sigtramp = (void *) tx39h_flush_icache_all;
@@ -408,7 +380,6 @@ void __init tx39_cache_init(void)
flush_cache_mm = tx39_flush_cache_mm;
flush_cache_range = tx39_flush_cache_range;
flush_cache_page = tx39_flush_cache_page;
- __flush_icache_page = tx39_flush_icache_page;
flush_icache_range = tx39_flush_icache_range;
flush_cache_sigtramp = tx39_flush_cache_sigtramp;
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c
index 40c8b023518..caf807ded51 100644
--- a/arch/mips/mm/cache.c
+++ b/arch/mips/mm/cache.c
@@ -25,7 +25,6 @@ void (*flush_cache_range)(struct vm_area_struct *vma, unsigned long start,
void (*flush_cache_page)(struct vm_area_struct *vma, unsigned long page,
unsigned long pfn);
void (*flush_icache_range)(unsigned long start, unsigned long end);
-void (*__flush_icache_page)(struct vm_area_struct *vma, struct page *page);
/* MIPS specific cache operations */
void (*flush_cache_sigtramp)(unsigned long addr);
diff --git a/arch/mips/mm/tlbex-fault.S b/arch/mips/mm/tlbex-fault.S
index 9e7f4175b49..e99eaa1fbed 100644
--- a/arch/mips/mm/tlbex-fault.S
+++ b/arch/mips/mm/tlbex-fault.S
@@ -19,8 +19,8 @@
move a0, sp
REG_S a2, PT_BVADDR(sp)
li a1, \write
- jal do_page_fault
- j ret_from_exception
+ PTR_LA ra, ret_from_exception
+ j do_page_fault
END(tlb_do_page_fault_\write)
.endm
diff --git a/include/asm-mips/cacheflush.h b/include/asm-mips/cacheflush.h
index 36416fdfcf6..9ab59e2bb23 100644
--- a/include/asm-mips/cacheflush.h
+++ b/include/asm-mips/cacheflush.h
@@ -46,8 +46,6 @@ static inline void flush_dcache_page(struct page *page)
#define flush_dcache_mmap_lock(mapping) do { } while (0)
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
-extern void (*__flush_icache_page)(struct vm_area_struct *vma,
- struct page *page);
static inline void flush_icache_page(struct vm_area_struct *vma,
struct page *page)
{
diff --git a/include/asm-mips/galileo-boards/ev96100.h b/include/asm-mips/galileo-boards/ev96100.h
deleted file mode 100644
index 070dfd84a8e..00000000000
--- a/include/asm-mips/galileo-boards/ev96100.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- *
- */
-#ifndef _MIPS_EV96100_H
-#define _MIPS_EV96100_H
-
-#include <asm/addrspace.h>
-
-/*
- * GT64120 config space base address
- */
-#define GT64120_BASE (KSEG1ADDR(0x14000000))
-#define MIPS_GT_BASE GT64120_BASE
-
-/*
- * PCI Bus allocation
- */
-#define GT_PCI_MEM_BASE 0x12000000UL
-#define GT_PCI_MEM_SIZE 0x02000000UL
-#define GT_PCI_IO_BASE 0x10000000UL
-#define GT_PCI_IO_SIZE 0x02000000UL
-#define GT_ISA_IO_BASE PCI_IO_BASE
-
-/*
- * Duart I/O ports.
- */
-#define EV96100_COM1_BASE_ADDR (0xBD000000 + 0x20)
-#define EV96100_COM2_BASE_ADDR (0xBD000000 + 0x00)
-
-
-/*
- * EV96100 interrupt controller register base.
- */
-#define EV96100_ICTRL_REGS_BASE (KSEG1ADDR(0x1f000000))
-
-/*
- * EV96100 UART register base.
- */
-#define EV96100_UART0_REGS_BASE EV96100_COM1_BASE_ADDR
-#define EV96100_UART1_REGS_BASE EV96100_COM2_BASE_ADDR
-#define EV96100_BASE_BAUD ( 3686400 / 16 )
-
-
-/*
- * Because of an error/peculiarity in the Galileo chip, we need to swap the
- * bytes when running bigendian.
- */
-#define __GT_READ(ofs) \
- (*(volatile u32 *)(GT64120_BASE+(ofs)))
-#define __GT_WRITE(ofs, data) \
- do { *(volatile u32 *)(GT64120_BASE+(ofs)) = (data); } while (0)
-#define GT_READ(ofs) le32_to_cpu(__GT_READ(ofs))
-#define GT_WRITE(ofs, data) __GT_WRITE(ofs, cpu_to_le32(data))
-
-#endif /* !(_MIPS_EV96100_H) */
diff --git a/include/asm-mips/galileo-boards/ev96100int.h b/include/asm-mips/galileo-boards/ev96100int.h
deleted file mode 100644
index c58b16d06d6..00000000000
--- a/include/asm-mips/galileo-boards/ev96100int.h
+++ /dev/null
@@ -1,12 +0,0 @@
-/*
- *
- */
-#ifndef _MIPS_EV96100INT_H
-#define _MIPS_EV96100INT_H
-
-#define EV96100INT_UART_0 6 /* IP 6 */
-#define EV96100INT_TIMER 7 /* IP 7 */
-
-extern void ev96100int_init(void);
-
-#endif /* !(_MIPS_EV96100_H) */
diff --git a/include/asm-mips/irqflags.h b/include/asm-mips/irqflags.h
index 43ca09a3a3d..46bf5de5ac7 100644
--- a/include/asm-mips/irqflags.h
+++ b/include/asm-mips/irqflags.h
@@ -213,12 +213,37 @@ static inline int raw_irqs_disabled_flags(unsigned long flags)
* Do the CPU's IRQ-state tracing from assembly code.
*/
#ifdef CONFIG_TRACE_IRQFLAGS
+/* Reload some registers clobbered by trace_hardirqs_on */
+#ifdef CONFIG_64BIT
+# define TRACE_IRQS_RELOAD_REGS \
+ LONG_L $11, PT_R11(sp); \
+ LONG_L $10, PT_R10(sp); \
+ LONG_L $9, PT_R9(sp); \
+ LONG_L $8, PT_R8(sp); \
+ LONG_L $7, PT_R7(sp); \
+ LONG_L $6, PT_R6(sp); \
+ LONG_L $5, PT_R5(sp); \
+ LONG_L $4, PT_R4(sp); \
+ LONG_L $2, PT_R2(sp)
+#else
+# define TRACE_IRQS_RELOAD_REGS \
+ LONG_L $7, PT_R7(sp); \
+ LONG_L $6, PT_R6(sp); \
+ LONG_L $5, PT_R5(sp); \
+ LONG_L $4, PT_R4(sp); \
+ LONG_L $2, PT_R2(sp)
+#endif
# define TRACE_IRQS_ON \
+ CLI; /* make sure trace_hardirqs_on() is called in kernel level */ \
jal trace_hardirqs_on
+# define TRACE_IRQS_ON_RELOAD \
+ TRACE_IRQS_ON; \
+ TRACE_IRQS_RELOAD_REGS
# define TRACE_IRQS_OFF \
jal trace_hardirqs_off
#else
# define TRACE_IRQS_ON
+# define TRACE_IRQS_ON_RELOAD
# define TRACE_IRQS_OFF
#endif
diff --git a/include/asm-mips/mach-ev64120/mach-gt64120.h b/include/asm-mips/mach-ev64120/mach-gt64120.h
index 13b1443a7a6..7e272ce57ea 100644
--- a/include/asm-mips/mach-ev64120/mach-gt64120.h
+++ b/include/asm-mips/mach-ev64120/mach-gt64120.h
@@ -42,6 +42,7 @@ extern unsigned long gt64120_base;
#define EV64120_UART0_REGS_BASE (KSEG1ADDR(EV64120_COM1_BASE_ADDR))
#define EV64120_UART1_REGS_BASE (KSEG1ADDR(EV64120_COM2_BASE_ADDR))
#define EV64120_BASE_BAUD ( 3686400 / 16 )
+#define EV64120_UART_IRQ 6
/*
* PCI interrupts will come in on either the INTA or INTD interrups lines,
diff --git a/include/asm-mips/serial.h b/include/asm-mips/serial.h
index 035637c67e7..c882e04e149 100644
--- a/include/asm-mips/serial.h
+++ b/include/asm-mips/serial.h
@@ -55,19 +55,18 @@
* Galileo EV64120 evaluation board
*/
#ifdef CONFIG_MIPS_EV64120
-#include <asm/galileo-boards/ev96100.h>
-#include <asm/galileo-boards/ev96100int.h>
-#define EV96100_SERIAL_PORT_DEFNS \
- { .baud_base = EV96100_BASE_BAUD, .irq = EV96100INT_UART_0, \
+#include <mach-gt64120.h>
+#define EV64120_SERIAL_PORT_DEFNS \
+ { .baud_base = EV64120_BASE_BAUD, .irq = EV64120_UART_IRQ, \
.flags = STD_COM_FLAGS, \
- .iomem_base = EV96100_UART0_REGS_BASE, .iomem_reg_shift = 2, \
+ .iomem_base = EV64120_UART0_REGS_BASE, .iomem_reg_shift = 2, \
.io_type = SERIAL_IO_MEM }, \
- { .baud_base = EV96100_BASE_BAUD, .irq = EV96100INT_UART_0, \
+ { .baud_base = EV64120_BASE_BAUD, .irq = EV64120_UART_IRQ, \
.flags = STD_COM_FLAGS, \
- .iomem_base = EV96100_UART1_REGS_BASE, .iomem_reg_shift = 2, \
+ .iomem_base = EV64120_UART1_REGS_BASE, .iomem_reg_shift = 2, \
.io_type = SERIAL_IO_MEM },
#else
-#define EV96100_SERIAL_PORT_DEFNS
+#define EV64120_SERIAL_PORT_DEFNS
#endif
#ifdef CONFIG_MIPS_ITE8172
@@ -239,7 +238,7 @@
#define SERIAL_PORT_DFNS \
DDB5477_SERIAL_PORT_DEFNS \
- EV96100_SERIAL_PORT_DEFNS \
+ EV64120_SERIAL_PORT_DEFNS \
IP32_SERIAL_PORT_DEFNS \
ITE_SERIAL_PORT_DEFNS \
IVR_SERIAL_PORT_DEFNS \
diff --git a/include/asm-mips/stacktrace.h b/include/asm-mips/stacktrace.h
new file mode 100644
index 00000000000..07f873351a8
--- /dev/null
+++ b/include/asm-mips/stacktrace.h
@@ -0,0 +1,44 @@
+#ifndef _ASM_STACKTRACE_H
+#define _ASM_STACKTRACE_H
+
+#include <asm/ptrace.h>
+
+#ifdef CONFIG_KALLSYMS
+extern int raw_show_trace;
+extern unsigned long unwind_stack(struct task_struct *task, unsigned long *sp,
+ unsigned long pc, unsigned long *ra);
+#else
+#define raw_show_trace 1
+#define unwind_stack(task, sp, pc, ra) 0
+#endif
+
+static __always_inline void prepare_frametrace(struct pt_regs *regs)
+{
+#ifndef CONFIG_KALLSYMS
+ /*
+ * Remove any garbage that may be in regs (specially func
+ * addresses) to avoid show_raw_backtrace() to report them
+ */
+ memset(regs, 0, sizeof(*regs));
+#endif
+ __asm__ __volatile__(
+ ".set push\n\t"
+ ".set noat\n\t"
+#ifdef CONFIG_64BIT
+ "1: dla $1, 1b\n\t"
+ "sd $1, %0\n\t"
+ "sd $29, %1\n\t"
+ "sd $31, %2\n\t"
+#else
+ "1: la $1, 1b\n\t"
+ "sw $1, %0\n\t"
+ "sw $29, %1\n\t"
+ "sw $31, %2\n\t"
+#endif
+ ".set pop\n\t"
+ : "=m" (regs->cp0_epc),
+ "=m" (regs->regs[29]), "=m" (regs->regs[31])
+ : : "memory");
+}
+
+#endif /* _ASM_STACKTRACE_H */