diff options
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/Kconfig.debug | 4 | ||||
| -rw-r--r-- | arch/mips/kernel/entry.S | 15 | ||||
| -rw-r--r-- | arch/mips/kernel/gdb-low.S | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/genex.S | 6 | ||||
| -rw-r--r-- | arch/mips/kernel/head.S | 3 | ||||
| -rw-r--r-- | arch/mips/kernel/scall32-o32.S | 15 | ||||
| -rw-r--r-- | arch/mips/kernel/scall64-64.S | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/scall64-n32.S | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/scall64-o32.S | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/smtc-asm.S | 1 |
10 files changed, 50 insertions, 2 deletions
diff --git a/arch/mips/Kconfig.debug b/arch/mips/Kconfig.debug index 515f9e61130..5d6afb52d90 100644 --- a/arch/mips/Kconfig.debug +++ b/arch/mips/Kconfig.debug @@ -1,5 +1,9 @@ menu "Kernel hacking" +config TRACE_IRQFLAGS_SUPPORT + bool + default y + source "lib/Kconfig.debug" config CROSSCOMPILE diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S index 01e7fa86aa4..766655f3525 100644 --- a/arch/mips/kernel/entry.S +++ b/arch/mips/kernel/entry.S @@ -113,6 +113,21 @@ FEXPORT(restore_all) # restore full frame RESTORE_AT RESTORE_STATIC FEXPORT(restore_partial) # restore partial frame +#ifdef CONFIG_TRACE_IRQFLAGS + SAVE_STATIC + SAVE_AT + SAVE_TEMP + LONG_L v0, PT_STATUS(sp) + and v0, 1 + beqz v0, 1f + jal trace_hardirqs_on + b 2f +1: jal trace_hardirqs_off +2: + RESTORE_TEMP + RESTORE_AT + RESTORE_STATIC +#endif RESTORE_SOME RESTORE_SP_AND_RET .set at diff --git a/arch/mips/kernel/gdb-low.S b/arch/mips/kernel/gdb-low.S index 666bc9014cb..2c446063636 100644 --- a/arch/mips/kernel/gdb-low.S +++ b/arch/mips/kernel/gdb-low.S @@ -7,6 +7,7 @@ #include <asm/asm.h> #include <asm/errno.h> +#include <asm/irqflags.h> #include <asm/mipsregs.h> #include <asm/regdef.h> #include <asm/stackframe.h> @@ -120,6 +121,7 @@ LONG_S $31, GDB_FR_REG31(sp) CLI /* disable interrupts */ + TRACE_IRQS_OFF /* * Followed by the floating point registers diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S index b563811b1b2..37fda3dcdfc 100644 --- a/arch/mips/kernel/genex.S +++ b/arch/mips/kernel/genex.S @@ -13,6 +13,7 @@ #include <asm/asm.h> #include <asm/asmmacro.h> #include <asm/cacheops.h> +#include <asm/irqflags.h> #include <asm/regdef.h> #include <asm/fpregdef.h> #include <asm/mipsregs.h> @@ -128,6 +129,7 @@ handle_vcei: NESTED(handle_int, PT_SIZE, sp) SAVE_ALL CLI + TRACE_IRQS_OFF PTR_LA ra, ret_from_irq move a0, sp @@ -216,6 +218,7 @@ NESTED(except_vec_vi_handler, 0, sp) _ehb #endif /* CONFIG_MIPS_MT_SMTC */ CLI + TRACE_IRQS_OFF move a0, sp jalr v0 j ret_from_irq @@ -288,11 +291,13 @@ NESTED(nmi_handler, PT_SIZE, sp) .endm .macro __build_clear_sti + TRACE_IRQS_ON STI .endm .macro __build_clear_cli CLI + TRACE_IRQS_OFF .endm .macro __build_clear_fpe @@ -300,6 +305,7 @@ NESTED(nmi_handler, PT_SIZE, sp) li a2, ~(0x3f << 12) and a2, a1 ctc1 a2, fcr31 + TRACE_IRQS_ON STI .endm diff --git a/arch/mips/kernel/head.S b/arch/mips/kernel/head.S index 476c1eb33c9..8c6db0fc72f 100644 --- a/arch/mips/kernel/head.S +++ b/arch/mips/kernel/head.S @@ -5,7 +5,7 @@ * * Copyright (C) 1994, 1995 Waldorf Electronics * Written by Ralf Baechle and Andreas Busse - * Copyright (C) 1994, 95, 96, 97, 98, 99, 2003 Ralf Baechle + * Copyright (C) 1994 - 99, 2003, 06 Ralf Baechle * Copyright (C) 1996 Paul M. Antoine * Modified for DECStation and hence R3000 support by Paul M. Antoine * Further modifications by David S. Miller and Harald Koerfgen @@ -18,6 +18,7 @@ #include <asm/asm.h> #include <asm/asmmacro.h> +#include <asm/irqflags.h> #include <asm/regdef.h> #include <asm/page.h> #include <asm/mipsregs.h> diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index c8e5f9c9a11..ba1bcd83c7d 100644 --- a/arch/mips/kernel/scall32-o32.S +++ b/arch/mips/kernel/scall32-o32.S @@ -3,13 +3,14 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (C) 1995, 96, 97, 98, 99, 2000, 01, 02 by Ralf Baechle + * Copyright (C) 1995-99, 2000- 02, 06 Ralf Baechle <ralf@linux-mips.org> * Copyright (C) 2001 MIPS Technologies, Inc. * Copyright (C) 2004 Thiemo Seufer */ #include <linux/errno.h> #include <asm/asm.h> #include <asm/asmmacro.h> +#include <asm/irqflags.h> #include <asm/mipsregs.h> #include <asm/regdef.h> #include <asm/stackframe.h> @@ -27,6 +28,18 @@ 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 STI .set at diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S index 809fd1b55f8..939e172db95 100644 --- a/arch/mips/kernel/scall64-64.S +++ b/arch/mips/kernel/scall64-64.S @@ -10,6 +10,7 @@ #include <linux/errno.h> #include <asm/asm.h> #include <asm/asmmacro.h> +#include <asm/irqflags.h> #include <asm/mipsregs.h> #include <asm/regdef.h> #include <asm/stackframe.h> @@ -33,6 +34,7 @@ NESTED(handle_sys64, PT_SIZE, sp) */ .set noat SAVE_SOME + TRACE_IRQS_ON STI .set at #endif diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S index b2b5cb9fe57..98abbc5a9f1 100644 --- a/arch/mips/kernel/scall64-n32.S +++ b/arch/mips/kernel/scall64-n32.S @@ -10,6 +10,7 @@ #include <linux/errno.h> #include <asm/asm.h> #include <asm/asmmacro.h> +#include <asm/irqflags.h> #include <asm/mipsregs.h> #include <asm/regdef.h> #include <asm/stackframe.h> @@ -32,6 +33,7 @@ NESTED(handle_sysn32, PT_SIZE, sp) #ifndef CONFIG_MIPS32_O32 .set noat SAVE_SOME + TRACE_IRQS_ON STI .set at #endif diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S index 3a138dcc882..505c9ee5400 100644 --- a/arch/mips/kernel/scall64-o32.S +++ b/arch/mips/kernel/scall64-o32.S @@ -16,6 +16,7 @@ #include <linux/errno.h> #include <asm/asm.h> #include <asm/asmmacro.h> +#include <asm/irqflags.h> #include <asm/mipsregs.h> #include <asm/regdef.h> #include <asm/stackframe.h> @@ -27,6 +28,7 @@ NESTED(handle_sys, PT_SIZE, sp) .set noat SAVE_SOME + TRACE_IRQS_ON STI .set at ld t1, PT_EPC(sp) # skip syscall on return diff --git a/arch/mips/kernel/smtc-asm.S b/arch/mips/kernel/smtc-asm.S index 72c6d98f885..4cc3dea3661 100644 --- a/arch/mips/kernel/smtc-asm.S +++ b/arch/mips/kernel/smtc-asm.S @@ -96,6 +96,7 @@ FEXPORT(__smtc_ipi_vector) /* Save all will redundantly recompute the SP, but use it for now */ SAVE_ALL CLI + TRACE_IRQS_OFF move a0,sp /* Function to be invoked passed stack pad slot 5 */ lw t0,PT_PADSLOT5(sp) |