From b4f4372f96e0573d752d9e45beda02fabf716cc8 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Sun, 23 Nov 2008 21:55:29 -0800 Subject: sparc64: Make %pil level 15 a pseudo-NMI. So that we can profile code even in a local_irq_disable() section, only write 14 (instead of 15) into the %pil register to disable IRQs. This allows PIL level 15 to serve as a pseudo NMI. Signed-off-by: David S. Miller --- arch/sparc64/kernel/cherrs.S | 10 +++++----- arch/sparc64/kernel/head.S | 2 +- arch/sparc64/kernel/hvtramp.S | 5 +++-- arch/sparc64/kernel/smp.c | 4 ++-- arch/sparc64/kernel/spiterrs.S | 2 +- arch/sparc64/kernel/sun4v_ivec.S | 8 ++++---- arch/sparc64/kernel/traps.c | 4 ++-- arch/sparc64/kernel/ttable.S | 2 +- 8 files changed, 19 insertions(+), 18 deletions(-) (limited to 'arch/sparc64/kernel') diff --git a/arch/sparc64/kernel/cherrs.S b/arch/sparc64/kernel/cherrs.S index 89afebd7eca..4ee1ad42086 100644 --- a/arch/sparc64/kernel/cherrs.S +++ b/arch/sparc64/kernel/cherrs.S @@ -102,7 +102,7 @@ cheetah_plus_dcpe_trap_vector: .type do_cheetah_plus_data_parity,#function do_cheetah_plus_data_parity: rdpr %pil, %g2 - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil ba,pt %xcc, etrap_irq rd %pc, %g7 #ifdef CONFIG_TRACE_IRQFLAGS @@ -144,7 +144,7 @@ cheetah_plus_icpe_trap_vector: .type do_cheetah_plus_insn_parity,#function do_cheetah_plus_insn_parity: rdpr %pil, %g2 - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil ba,pt %xcc, etrap_irq rd %pc, %g7 #ifdef CONFIG_TRACE_IRQFLAGS @@ -492,7 +492,7 @@ cheetah_fast_ecc: .type c_fast_ecc,#function c_fast_ecc: rdpr %pil, %g2 - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil ba,pt %xcc, etrap_irq rd %pc, %g7 #ifdef CONFIG_TRACE_IRQFLAGS @@ -528,7 +528,7 @@ cheetah_cee: .type c_cee,#function c_cee: rdpr %pil, %g2 - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil ba,pt %xcc, etrap_irq rd %pc, %g7 #ifdef CONFIG_TRACE_IRQFLAGS @@ -564,7 +564,7 @@ cheetah_deferred_trap: .type c_deferred,#function c_deferred: rdpr %pil, %g2 - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil ba,pt %xcc, etrap_irq rd %pc, %g7 #ifdef CONFIG_TRACE_IRQFLAGS diff --git a/arch/sparc64/kernel/head.S b/arch/sparc64/kernel/head.S index 353226fa023..45830c35fc6 100644 --- a/arch/sparc64/kernel/head.S +++ b/arch/sparc64/kernel/head.S @@ -706,7 +706,7 @@ setup_trap_table: andn %l0, PSTATE_IE, %o1 wrpr %o1, 0x0, %pstate rdpr %pil, %l1 - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil /* Make the firmware call to jump over to the Linux trap table. */ sethi %hi(is_sun4v), %o0 diff --git a/arch/sparc64/kernel/hvtramp.S b/arch/sparc64/kernel/hvtramp.S index 0236c43772f..9365432904d 100644 --- a/arch/sparc64/kernel/hvtramp.S +++ b/arch/sparc64/kernel/hvtramp.S @@ -1,6 +1,6 @@ /* hvtramp.S: Hypervisor start-cpu trampoline code. * - * Copyright (C) 2007 David S. Miller + * Copyright (C) 2007, 2008 David S. Miller */ #include @@ -14,6 +14,7 @@ #include #include #include +#include __CPUINIT .align 8 @@ -32,7 +33,7 @@ */ hv_cpu_startup: SET_GL(0) - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil wrpr %g0, 0, %canrestore wrpr %g0, 0, %otherwin wrpr %g0, 6, %cansave diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c index c6d06362728..b5225c81556 100644 --- a/arch/sparc64/kernel/smp.c +++ b/arch/sparc64/kernel/smp.c @@ -1146,8 +1146,8 @@ void smp_release(void) } } -/* Imprisoned penguins run with %pil == 15, but PSTATE_IE set, so they - * can service tlb flush xcalls... +/* Imprisoned penguins run with %pil == PIL_NORMAL_MAX, but PSTATE_IE + * set, so they can service tlb flush xcalls... */ extern void prom_world(int); diff --git a/arch/sparc64/kernel/spiterrs.S b/arch/sparc64/kernel/spiterrs.S index ef902c6f8e3..c357e40ffd0 100644 --- a/arch/sparc64/kernel/spiterrs.S +++ b/arch/sparc64/kernel/spiterrs.S @@ -80,7 +80,7 @@ __spitfire_cee_trap_continue: cmp %g2, 1 rdpr %pil, %g2 bleu,pt %xcc, 1f - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil ba,pt %xcc, etraptl1 rd %pc, %g7 diff --git a/arch/sparc64/kernel/sun4v_ivec.S b/arch/sparc64/kernel/sun4v_ivec.S index e2f8e1b4882..559bc5e9c19 100644 --- a/arch/sparc64/kernel/sun4v_ivec.S +++ b/arch/sparc64/kernel/sun4v_ivec.S @@ -186,7 +186,7 @@ sun4v_res_mondo: * when it's done. */ rdpr %pil, %g2 - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil mov %g1, %g4 ba,pt %xcc, etrap_irq rd %pc, %g7 @@ -216,7 +216,7 @@ sun4v_res_mondo_queue_full: membar #Sync rdpr %pil, %g2 - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil ba,pt %xcc, etrap_irq rd %pc, %g7 #ifdef CONFIG_TRACE_IRQFLAGS @@ -297,7 +297,7 @@ sun4v_nonres_mondo: * when it's done. */ rdpr %pil, %g2 - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil mov %g1, %g4 ba,pt %xcc, etrap_irq rd %pc, %g7 @@ -327,7 +327,7 @@ sun4v_nonres_mondo_queue_full: membar #Sync rdpr %pil, %g2 - wrpr %g0, 15, %pil + wrpr %g0, PIL_NORMAL_MAX, %pil ba,pt %xcc, etrap_irq rd %pc, %g7 #ifdef CONFIG_TRACE_IRQFLAGS diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c index 04994fc8700..4638af2f55a 100644 --- a/arch/sparc64/kernel/traps.c +++ b/arch/sparc64/kernel/traps.c @@ -1832,7 +1832,7 @@ static void sun4v_log_error(struct pt_regs *regs, struct sun4v_error_entry *ent, } } -/* We run with %pil set to 15 and PSTATE_IE enabled in %pstate. +/* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate. * Log the event and clear the first word of the entry. */ void sun4v_resum_error(struct pt_regs *regs, unsigned long offset) @@ -1880,7 +1880,7 @@ void sun4v_resum_overflow(struct pt_regs *regs) atomic_inc(&sun4v_resum_oflow_cnt); } -/* We run with %pil set to 15 and PSTATE_IE enabled in %pstate. +/* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate. * Log the event, clear the first word of the entry, and die. */ void sun4v_nonresum_error(struct pt_regs *regs, unsigned long offset) diff --git a/arch/sparc64/kernel/ttable.S b/arch/sparc64/kernel/ttable.S index 2a31ffa4c28..ea925503b42 100644 --- a/arch/sparc64/kernel/ttable.S +++ b/arch/sparc64/kernel/ttable.S @@ -66,7 +66,7 @@ tl0_irq6: BTRAP(0x46) tl0_irq7: BTRAP(0x47) BTRAP(0x48) BTRAP(0x49) tl0_irq10: BTRAP(0x4a) BTRAP(0x4b) BTRAP(0x4c) BTRAP(0x4d) tl0_irq14: TRAP_IRQ(timer_interrupt, 14) -tl0_irq15: TRAP_IRQ(perfctr_irq, 15) +tl0_irq15: TRAP_NMI_IRQ(perfctr_irq, 15) tl0_resv050: BTRAP(0x50) BTRAP(0x51) BTRAP(0x52) BTRAP(0x53) BTRAP(0x54) BTRAP(0x55) tl0_resv056: BTRAP(0x56) BTRAP(0x57) BTRAP(0x58) BTRAP(0x59) BTRAP(0x5a) BTRAP(0x5b) tl0_resv05c: BTRAP(0x5c) BTRAP(0x5d) BTRAP(0x5e) BTRAP(0x5f) -- cgit v1.2.3-70-g09d2