From 85a793533524f333e8d630dc22450e574b7e08d2 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 24 Mar 2008 20:06:24 -0700 Subject: [SPARC64]: Make save_stack_trace() more efficient. Doing a 'flushw' every stack trace capture creates so much overhead that it makes lockdep next to unusable. We only care about the frame pointer chain and the function caller program counters, so flush those by hand to the stack frame. This is significantly more efficient than a 'flushw' because: 1) We only save 16 bytes per active register window to the stack. 2) This doesn't push the entire register window context of the current call chain out of the cpu, forcing register window fill traps as we return back down. Note that we can't use 'restore' and 'save' instructions to move around the register windows because that wouldn't work on Niagara processors. They optimize 'save' into a new register window by simply clearing out the registers instead of pulling them in from the on-chip register window backing store. Based upon a report by Tom Callaway. Signed-off-by: David S. Miller --- include/asm-sparc64/stacktrace.h | 6 ++++++ 1 file changed, 6 insertions(+) create mode 100644 include/asm-sparc64/stacktrace.h (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/stacktrace.h b/include/asm-sparc64/stacktrace.h new file mode 100644 index 00000000000..6cee39adf6d --- /dev/null +++ b/include/asm-sparc64/stacktrace.h @@ -0,0 +1,6 @@ +#ifndef _SPARC64_STACKTRACE_H +#define _SPARC64_STACKTRACE_H + +extern void stack_trace_flush(void); + +#endif /* _SPARC64_STACKTRACE_H */ -- cgit v1.2.3 From 606d5b19391476f71e10ccce5b376f7071d11aba Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Tue, 25 Mar 2008 21:13:22 -0700 Subject: [SPARC64]: Adjust {TLBTEMP,TSBMAP}_BASE. Move them further from the main kernel image area to facilitate larger kernel sizes. Adjust comments to match. Signed-off-by: David S. Miller --- include/asm-sparc64/pgtable.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/pgtable.h b/include/asm-sparc64/pgtable.h index 3167ccff64f..95303f5be86 100644 --- a/include/asm-sparc64/pgtable.h +++ b/include/asm-sparc64/pgtable.h @@ -23,9 +23,9 @@ #include #include -/* The kernel image occupies 0x4000000 to 0x1000000 (4MB --> 32MB). - * The page copy blockops can use 0x2000000 to 0x4000000. - * The TSB is mapped in the 0x4000000 to 0x6000000 range. +/* The kernel image occupies 0x4000000 to 0x6000000 (4MB --> 96MB). + * The page copy blockops can use 0x6000000 to 0x8000000. + * The TSB is mapped in the 0x8000000 to 0xa000000 range. * The PROM resides in an area spanning 0xf0000000 to 0x100000000. * The vmalloc area spans 0x100000000 to 0x200000000. * Since modules need to be in the lowest 32-bits of the address space, @@ -33,8 +33,8 @@ * There is a single static kernel PMD which maps from 0x0 to address * 0x400000000. */ -#define TLBTEMP_BASE _AC(0x0000000002000000,UL) -#define TSBMAP_BASE _AC(0x0000000004000000,UL) +#define TLBTEMP_BASE _AC(0x0000000006000000,UL) +#define TSBMAP_BASE _AC(0x0000000008000000,UL) #define MODULES_VADDR _AC(0x0000000010000000,UL) #define MODULES_LEN _AC(0x00000000e0000000,UL) #define MODULES_END _AC(0x00000000f0000000,UL) -- cgit v1.2.3 From 3d5ae6b69eacfac025021998d2ce159768edcfe1 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Tue, 25 Mar 2008 21:51:40 -0700 Subject: [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/{cpu,setup}.c We create a local header file entry.h, under arch/sparc64/kernel/, that we can use to declare routines either defined in assembler or only invoked from assembler. As well as other data objects which are private to the inner sparc64 kernel arch code. Signed-off-by: David S. Miller --- include/asm-sparc64/cpudata.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/cpudata.h b/include/asm-sparc64/cpudata.h index 542421460a1..532975ecfe1 100644 --- a/include/asm-sparc64/cpudata.h +++ b/include/asm-sparc64/cpudata.h @@ -86,6 +86,8 @@ extern struct trap_per_cpu trap_block[NR_CPUS]; extern void init_cur_cpu_trap(struct thread_info *); extern void setup_tba(void); extern int ncpus_probed; +extern void __init cpu_probe(void); +extern const struct seq_operations cpuinfo_op; extern unsigned long real_hard_smp_processor_id(void); -- cgit v1.2.3 From 99cd220133cdf2a559529d522a78b2ebc1bef2d8 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 26 Mar 2008 00:19:43 -0700 Subject: [SPARC64]: Fix sparse errors in arch/sparc64/kernel/traps.c Add 'UL' markers to DCU_* macros. Declare C functions called from assembler in entry.h Declare C functions called from within the sparc64 arch code in include/asm-sparc64/*.h headers as appropriate. Remove unused routines in traps.c Signed-off-by: David S. Miller --- include/asm-sparc64/dcu.h | 41 +++++++++++++++++++++-------------------- include/asm-sparc64/pgtable.h | 2 ++ 2 files changed, 23 insertions(+), 20 deletions(-) (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/dcu.h b/include/asm-sparc64/dcu.h index ecbed2ae548..0f704e106a1 100644 --- a/include/asm-sparc64/dcu.h +++ b/include/asm-sparc64/dcu.h @@ -1,26 +1,27 @@ -/* $Id: dcu.h,v 1.2 2001/03/01 23:23:33 davem Exp $ */ #ifndef _SPARC64_DCU_H #define _SPARC64_DCU_H +#include + /* UltraSparc-III Data Cache Unit Control Register */ -#define DCU_CP 0x0002000000000000 /* Physical Cache Enable w/o mmu*/ -#define DCU_CV 0x0001000000000000 /* Virtual Cache Enable w/o mmu */ -#define DCU_ME 0x0000800000000000 /* NC-store Merging Enable */ -#define DCU_RE 0x0000400000000000 /* RAW bypass Enable */ -#define DCU_PE 0x0000200000000000 /* PCache Enable */ -#define DCU_HPE 0x0000100000000000 /* HW prefetch Enable */ -#define DCU_SPE 0x0000080000000000 /* SW prefetch Enable */ -#define DCU_SL 0x0000040000000000 /* Secondary load steering Enab */ -#define DCU_WE 0x0000020000000000 /* WCache enable */ -#define DCU_PM 0x000001fe00000000 /* PA Watchpoint Byte Mask */ -#define DCU_VM 0x00000001fe000000 /* VA Watchpoint Byte Mask */ -#define DCU_PR 0x0000000001000000 /* PA Watchpoint Read Enable */ -#define DCU_PW 0x0000000000800000 /* PA Watchpoint Write Enable */ -#define DCU_VR 0x0000000000400000 /* VA Watchpoint Read Enable */ -#define DCU_VW 0x0000000000200000 /* VA Watchpoint Write Enable */ -#define DCU_DM 0x0000000000000008 /* DMMU Enable */ -#define DCU_IM 0x0000000000000004 /* IMMU Enable */ -#define DCU_DC 0x0000000000000002 /* Data Cache Enable */ -#define DCU_IC 0x0000000000000001 /* Instruction Cache Enable */ +#define DCU_CP _AC(0x0002000000000000,UL) /* Phys Cache Enable w/o mmu */ +#define DCU_CV _AC(0x0001000000000000,UL) /* Virt Cache Enable w/o mmu */ +#define DCU_ME _AC(0x0000800000000000,UL) /* NC-store Merging Enable */ +#define DCU_RE _AC(0x0000400000000000,UL) /* RAW bypass Enable */ +#define DCU_PE _AC(0x0000200000000000,UL) /* PCache Enable */ +#define DCU_HPE _AC(0x0000100000000000,UL) /* HW prefetch Enable */ +#define DCU_SPE _AC(0x0000080000000000,UL) /* SW prefetch Enable */ +#define DCU_SL _AC(0x0000040000000000,UL) /* Secondary ld-steering Enab*/ +#define DCU_WE _AC(0x0000020000000000,UL) /* WCache enable */ +#define DCU_PM _AC(0x000001fe00000000,UL) /* PA Watchpoint Byte Mask */ +#define DCU_VM _AC(0x00000001fe000000,UL) /* VA Watchpoint Byte Mask */ +#define DCU_PR _AC(0x0000000001000000,UL) /* PA Watchpoint Read Enable */ +#define DCU_PW _AC(0x0000000000800000,UL) /* PA Watchpoint Write Enable*/ +#define DCU_VR _AC(0x0000000000400000,UL) /* VA Watchpoint Read Enable */ +#define DCU_VW _AC(0x0000000000200000,UL) /* VA Watchpoint Write Enable*/ +#define DCU_DM _AC(0x0000000000000008,UL) /* DMMU Enable */ +#define DCU_IM _AC(0x0000000000000004,UL) /* IMMU Enable */ +#define DCU_DC _AC(0x0000000000000002,UL) /* Data Cache Enable */ +#define DCU_IC _AC(0x0000000000000001,UL) /* Instruction Cache Enable */ #endif /* _SPARC64_DCU_H */ diff --git a/include/asm-sparc64/pgtable.h b/include/asm-sparc64/pgtable.h index 95303f5be86..549e45266b6 100644 --- a/include/asm-sparc64/pgtable.h +++ b/include/asm-sparc64/pgtable.h @@ -761,6 +761,8 @@ extern unsigned long get_fb_unmapped_area(struct file *filp, unsigned long, extern void pgtable_cache_init(void); extern void sun4v_register_fault_status(void); extern void sun4v_ktsb_register(void); +extern void __init cheetah_ecache_flush_init(void); +extern void sun4v_patch_tlb_handlers(void); extern unsigned long cmdline_memory_size; -- cgit v1.2.3 From d91aa123b4b96e57680a39fb9dfd9722f8df3c7e Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 26 Mar 2008 00:37:51 -0700 Subject: [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/irq.c Signed-off-by: David S. Miller --- include/asm-sparc64/irq.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/irq.h b/include/asm-sparc64/irq.h index 30cb76b47be..0bb9bf53174 100644 --- a/include/asm-sparc64/irq.h +++ b/include/asm-sparc64/irq.h @@ -64,6 +64,7 @@ extern unsigned char virt_irq_alloc(unsigned int dev_handle, extern void virt_irq_free(unsigned int virt_irq); #endif +extern void __init init_IRQ(void); extern void fixup_irqs(void); static inline void set_softint(unsigned long bits) -- cgit v1.2.3 From cf3d7c1ef418863376d556c48c214cb828623584 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 26 Mar 2008 01:11:55 -0700 Subject: [SPARC64]: Fix sparse warnings in arch/sparc64/kernel/time.c Signed-off-by: David S. Miller --- include/asm-sparc64/timer.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/timer.h b/include/asm-sparc64/timer.h index ccbd6944886..5b779fd1f78 100644 --- a/include/asm-sparc64/timer.h +++ b/include/asm-sparc64/timer.h @@ -1,14 +1,13 @@ -/* $Id: timer.h,v 1.3 2000/05/09 17:40:15 davem Exp $ - * timer.h: System timer definitions for sun5. +/* timer.h: System timer definitions for sun5. * - * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) + * Copyright (C) 1997, 2008 David S. Miller (davem@davemloft.net) */ #ifndef _SPARC64_TIMER_H #define _SPARC64_TIMER_H #include - +#include struct sparc64_tick_ops { unsigned long (*get_tick)(void); @@ -25,5 +24,7 @@ struct sparc64_tick_ops { extern struct sparc64_tick_ops *tick_ops; extern unsigned long sparc64_get_clock_tick(unsigned int cpu); +extern void __devinit setup_sparc64_timer(void); +extern void __init time_init(void); #endif /* _SPARC64_TIMER_H */ -- cgit v1.2.3 From c101b088ba0ed16d7109b2f3c2d16798d162a535 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 26 Mar 2008 17:32:33 -0700 Subject: [SPARC64]: Define TASK_SIZE_OF() This make "cat /proc/${PID}/pagemap" more efficient for 32-bit tasks. Based upon a report by Mariusz Kozlowski. Signed-off-by: David S. Miller --- include/asm-sparc64/processor.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/asm-sparc64') diff --git a/include/asm-sparc64/processor.h b/include/asm-sparc64/processor.h index 8da484c1982..885b6a1dcae 100644 --- a/include/asm-sparc64/processor.h +++ b/include/asm-sparc64/processor.h @@ -37,6 +37,9 @@ #endif #define TASK_SIZE ((unsigned long)-VPTE_SIZE) +#define TASK_SIZE_OF(tsk) \ + (test_tsk_thread_flag(tsk,TIF_32BIT) ? \ + (1UL << 32UL) : TASK_SIZE) #ifdef __KERNEL__ #define STACK_TOP32 ((1UL << 32UL) - PAGE_SIZE) -- cgit v1.2.3