litmus-rt-ext-res.git - LITMUS^RT with extended reservations for Forbidden Zones paper @ RTAS'20

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author	Rob Herring <robh@kernel.org>	2015-10-06 18:57:33 -0400
committer	Rob Herring <robh@kernel.org>	2015-10-27 17:12:13 -0400
commit	1b7c501b51a8c851ff82769cbe905ef19cb70239 (patch)
tree	3085fd663e1a4704fe210298ffe3786609c8210c /arch/um/os-Linux/sigio.c
parent	9ffecb10283508260936b96022d4ee43a7798b4c (diff)

of: add config option to enable building of all dtbs

Enable building all dtb files when CONFIG_OF_ALL_DTBS is enabled. The dtbs are not really dependent on a platform being enabled or any other kernel config, so for testing coverage it is convenient to build all of the dtbs. In order to only build dtbs, this option can be used by creating an allno.config file containing: CONFIG_COMPILE_TEST=y CONFIG_OF=y CONFIG_OF_ALL_DTBS=y And then running: make KCONFIG_ALLCONFIG=1 allnoconfig make dtbs While building the dtbs themselves don't need a cross compiler, the scripts dependency does need one. This can be hacked around by commenting out "subdir-y += mod" in scripts/Makefile. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Grant Likely <grant.likely@linaro.org>

Diffstat (limited to 'arch/um/os-Linux/sigio.c')

0 files changed, 0 insertions, 0 deletions

/* * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License, version 2, as * published by the Free Software Foundation. * * 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * Copyright IBM Corp. 2007 * Copyright 2011 Freescale Semiconductor, Inc. * * Authors: Hollis Blanchard <hollisb@us.ibm.com> */ #include <linux/jiffies.h> #include <linux/hrtimer.h> #include <linux/types.h> #include <linux/string.h> #include <linux/kvm_host.h> #include <linux/clockchips.h> #include <asm/reg.h> #include <asm/time.h> #include <asm/byteorder.h> #include <asm/kvm_ppc.h> #include <asm/disassemble.h> #include <asm/ppc-opcode.h> #include "timing.h" #include "trace.h" void kvmppc_emulate_dec(struct kvm_vcpu *vcpu) { unsigned long dec_nsec; unsigned long long dec_time; pr_debug("mtDEC: %x\n", vcpu->arch.dec); hrtimer_try_to_cancel(&vcpu->arch.dec_timer); #ifdef CONFIG_PPC_BOOK3S /* mtdec lowers the interrupt line when positive. */ kvmppc_core_dequeue_dec(vcpu); /* POWER4+ triggers a dec interrupt if the value is < 0 */ if (vcpu->arch.dec & 0x80000000) { kvmppc_core_queue_dec(vcpu); return; } #endif #ifdef CONFIG_BOOKE /* On BOOKE, DEC = 0 is as good as decrementer not enabled */ if (vcpu->arch.dec == 0) return; #endif /* * The decrementer ticks at the same rate as the timebase, so * that's how we convert the guest DEC value to the number of * host ticks. */ dec_time = vcpu->arch.dec; /* * Guest timebase ticks at the same frequency as host decrementer. * So use the host decrementer calculations for decrementer emulation. */ dec_time = dec_time << decrementer_clockevent.shift; do_div(dec_time, decrementer_clockevent.mult); dec_nsec = do_div(dec_time, NSEC_PER_SEC); hrtimer_start(&vcpu->arch.dec_timer, ktime_set(dec_time, dec_nsec), HRTIMER_MODE_REL); vcpu->arch.dec_jiffies = get_tb(); } u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb) { u64 jd = tb - vcpu->arch.dec_jiffies; #ifdef CONFIG_BOOKE if (vcpu->arch.dec < jd) return 0; #endif return vcpu->arch.dec - jd; } static int kvmppc_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs) { enum emulation_result emulated = EMULATE_DONE; ulong spr_val = kvmppc_get_gpr(vcpu, rs); switch (sprn) { case SPRN_SRR0: kvmppc_set_srr0(vcpu, spr_val); break; case SPRN_SRR1: kvmppc_set_srr1(vcpu, spr_val); break; /* XXX We need to context-switch the timebase for * watchdog and FIT. */ case SPRN_TBWL: break; case SPRN_TBWU: break; case SPRN_DEC: vcpu->arch.dec = spr_val; kvmppc_emulate_dec(vcpu); break; case SPRN_SPRG0: kvmppc_set_sprg0(vcpu, spr_val); break; case SPRN_SPRG1: kvmppc_set_sprg1(vcpu, spr_val); break; case SPRN_SPRG2: kvmppc_set_sprg2(vcpu, spr_val);


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