From 7a6af5e38054d8e658a4b1b703902331a845de1a Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Wed, 3 Aug 2005 14:32:30 +1000 Subject: [PATCH] [PATCH] ppc64: remove firmware features from cpu_spec The firmware_features field of struct cpu_spec should really be a separate variable as the firmware features do not depend on the chip and the bitmask is constructed independently. By removing it, we save 112 bytes from the cpu_specs array and we access the bitmask directly instead of via the cur_cpu_spec pointer. Signed-off-by: Stephen Rothwell Signed-off-by: Paul Mackerras --- arch/ppc64/kernel/cputable.c | 16 +--------------- arch/ppc64/kernel/lparcfg.c | 4 ++-- arch/ppc64/kernel/pSeries_iommu.c | 2 +- arch/ppc64/kernel/pSeries_setup.c | 12 ++++++------ arch/ppc64/kernel/pSeries_smp.c | 2 +- arch/ppc64/kernel/process.c | 2 +- arch/ppc64/kernel/sysfs.c | 2 +- arch/ppc64/kernel/time.c | 2 +- include/asm-ppc64/cputable.h | 10 +++++----- 9 files changed, 19 insertions(+), 33 deletions(-) diff --git a/arch/ppc64/kernel/cputable.c b/arch/ppc64/kernel/cputable.c index 77cec42..84fdd27 100644 --- a/arch/ppc64/kernel/cputable.c +++ b/arch/ppc64/kernel/cputable.c @@ -23,6 +23,7 @@ struct cpu_spec* cur_cpu_spec = NULL; EXPORT_SYMBOL(cur_cpu_spec); +unsigned long ppc64_firmware_features; /* NOTE: * Unlike ppc32, ppc64 will only call this once for the boot CPU, it's @@ -60,7 +61,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .cpu_setup = __setup_cpu_power3, - .firmware_features = COMMON_PPC64_FW, }, { /* Power3+ */ .pvr_mask = 0xffff0000, @@ -73,7 +73,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .cpu_setup = __setup_cpu_power3, - .firmware_features = COMMON_PPC64_FW, }, { /* Northstar */ .pvr_mask = 0xffff0000, @@ -86,7 +85,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .cpu_setup = __setup_cpu_power3, - .firmware_features = COMMON_PPC64_FW, }, { /* Pulsar */ .pvr_mask = 0xffff0000, @@ -99,7 +97,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .cpu_setup = __setup_cpu_power3, - .firmware_features = COMMON_PPC64_FW, }, { /* I-star */ .pvr_mask = 0xffff0000, @@ -112,7 +109,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .cpu_setup = __setup_cpu_power3, - .firmware_features = COMMON_PPC64_FW, }, { /* S-star */ .pvr_mask = 0xffff0000, @@ -125,7 +121,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .cpu_setup = __setup_cpu_power3, - .firmware_features = COMMON_PPC64_FW, }, { /* Power4 */ .pvr_mask = 0xffff0000, @@ -138,7 +133,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .cpu_setup = __setup_cpu_power4, - .firmware_features = COMMON_PPC64_FW, }, { /* Power4+ */ .pvr_mask = 0xffff0000, @@ -151,7 +145,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .cpu_setup = __setup_cpu_power4, - .firmware_features = COMMON_PPC64_FW, }, { /* PPC970 */ .pvr_mask = 0xffff0000, @@ -166,7 +159,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .cpu_setup = __setup_cpu_ppc970, - .firmware_features = COMMON_PPC64_FW, }, { /* PPC970FX */ .pvr_mask = 0xffff0000, @@ -181,7 +173,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .cpu_setup = __setup_cpu_ppc970, - .firmware_features = COMMON_PPC64_FW, }, { /* PPC970MP */ .pvr_mask = 0xffff0000, @@ -196,7 +187,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .cpu_setup = __setup_cpu_ppc970, - .firmware_features = COMMON_PPC64_FW, }, { /* Power5 */ .pvr_mask = 0xffff0000, @@ -211,7 +201,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .cpu_setup = __setup_cpu_power4, - .firmware_features = COMMON_PPC64_FW, }, { /* Power5 */ .pvr_mask = 0xffff0000, @@ -226,7 +215,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .cpu_setup = __setup_cpu_power4, - .firmware_features = COMMON_PPC64_FW, }, { /* BE DD1.x */ .pvr_mask = 0xffff0000, @@ -241,7 +229,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .cpu_setup = __setup_cpu_be, - .firmware_features = COMMON_PPC64_FW, }, { /* default match */ .pvr_mask = 0x00000000, @@ -254,7 +241,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .cpu_setup = __setup_cpu_power4, - .firmware_features = COMMON_PPC64_FW, } }; diff --git a/arch/ppc64/kernel/lparcfg.c b/arch/ppc64/kernel/lparcfg.c index 02e9662..9383538 100644 --- a/arch/ppc64/kernel/lparcfg.c +++ b/arch/ppc64/kernel/lparcfg.c @@ -377,7 +377,7 @@ static int lparcfg_data(struct seq_file *m, void *v) partition_active_processors = lparcfg_count_active_processors(); - if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR) { + if (ppc64_firmware_features & FW_FEATURE_SPLPAR) { unsigned long h_entitled, h_unallocated; unsigned long h_aggregation, h_resource; unsigned long pool_idle_time, pool_procs; @@ -571,7 +571,7 @@ int __init lparcfg_init(void) mode_t mode = S_IRUSR; /* Allow writing if we have FW_FEATURE_SPLPAR */ - if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR) { + if (ppc64_firmware_features & FW_FEATURE_SPLPAR) { lparcfg_fops.write = lparcfg_write; mode |= S_IWUSR; } diff --git a/arch/ppc64/kernel/pSeries_iommu.c b/arch/ppc64/kernel/pSeries_iommu.c index 6913052..a5786be 100644 --- a/arch/ppc64/kernel/pSeries_iommu.c +++ b/arch/ppc64/kernel/pSeries_iommu.c @@ -546,7 +546,7 @@ void iommu_init_early_pSeries(void) } if (systemcfg->platform & PLATFORM_LPAR) { - if (cur_cpu_spec->firmware_features & FW_FEATURE_MULTITCE) { + if (ppc64_firmware_features & FW_FEATURE_MULTITCE) { ppc_md.tce_build = tce_buildmulti_pSeriesLP; ppc_md.tce_free = tce_freemulti_pSeriesLP; } else { diff --git a/arch/ppc64/kernel/pSeries_setup.c b/arch/ppc64/kernel/pSeries_setup.c index 5bec956..d3975ac 100644 --- a/arch/ppc64/kernel/pSeries_setup.c +++ b/arch/ppc64/kernel/pSeries_setup.c @@ -231,11 +231,11 @@ static void __init pSeries_setup_arch(void) pSeries_nvram_init(); - if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR) + if (ppc64_firmware_features & FW_FEATURE_SPLPAR) vpa_init(boot_cpuid); /* Choose an idle loop */ - if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR) { + if (ppc64_firmware_features & FW_FEATURE_SPLPAR) { if (get_paca()->lppaca.shared_proc) { printk(KERN_INFO "Using shared processor idle loop\n"); ppc_md.idle_loop = pseries_shared_idle; @@ -260,7 +260,7 @@ static int __init pSeries_init_panel(void) arch_initcall(pSeries_init_panel); -/* Build up the firmware_features bitmask field +/* Build up the ppc64_firmware_features bitmask field * using contents of device-tree/ibm,hypertas-functions. * Ultimately this functionality may be moved into prom.c prom_init(). */ @@ -272,7 +272,7 @@ void __init fw_feature_init(void) DBG(" -> fw_feature_init()\n"); - cur_cpu_spec->firmware_features = 0; + ppc64_firmware_features = 0; dn = of_find_node_by_path("/rtas"); if (dn == NULL) { printk(KERN_ERR "WARNING ! Cannot find RTAS in device-tree !\n"); @@ -288,7 +288,7 @@ void __init fw_feature_init(void) if ((firmware_features_table[i].name) && (strcmp(firmware_features_table[i].name,hypertas))==0) { /* we have a match */ - cur_cpu_spec->firmware_features |= + ppc64_firmware_features |= (firmware_features_table[i].val); break; } @@ -302,7 +302,7 @@ void __init fw_feature_init(void) of_node_put(dn); no_rtas: printk(KERN_INFO "firmware_features = 0x%lx\n", - cur_cpu_spec->firmware_features); + ppc64_firmware_features); DBG(" <- fw_feature_init()\n"); } diff --git a/arch/ppc64/kernel/pSeries_smp.c b/arch/ppc64/kernel/pSeries_smp.c index 62c55a1..8312d32 100644 --- a/arch/ppc64/kernel/pSeries_smp.c +++ b/arch/ppc64/kernel/pSeries_smp.c @@ -326,7 +326,7 @@ static void __devinit smp_xics_setup_cpu(int cpu) if (cpu != boot_cpuid) xics_setup_cpu(); - if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR) + if (ppc64_firmware_features & FW_FEATURE_SPLPAR) vpa_init(cpu); cpu_clear(cpu, of_spin_map); diff --git a/arch/ppc64/kernel/process.c b/arch/ppc64/kernel/process.c index f7cae05..390f434 100644 --- a/arch/ppc64/kernel/process.c +++ b/arch/ppc64/kernel/process.c @@ -206,7 +206,7 @@ struct task_struct *__switch_to(struct task_struct *prev, /* purr is nothing but processor time base */ #if defined(CONFIG_PPC_PSERIES) - if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR) { + if (ppc64_firmware_features & FW_FEATURE_SPLPAR) { struct cpu_usage *cu = &__get_cpu_var(cpu_usage_array); long unsigned start_tb, current_tb; start_tb = old_thread->start_tb; diff --git a/arch/ppc64/kernel/sysfs.c b/arch/ppc64/kernel/sysfs.c index 02b8ac4..90b653c 100644 --- a/arch/ppc64/kernel/sysfs.c +++ b/arch/ppc64/kernel/sysfs.c @@ -154,7 +154,7 @@ void ppc64_enable_pmcs(void) #ifdef CONFIG_PPC_PSERIES /* instruct hypervisor to maintain PMCs */ - if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR) + if (ppc64_firmware_features & FW_FEATURE_SPLPAR) get_paca()->lppaca.pmcregs_in_use = 1; #endif /* CONFIG_PPC_PSERIES */ } diff --git a/arch/ppc64/kernel/time.c b/arch/ppc64/kernel/time.c index 909462e..1c05cee 100644 --- a/arch/ppc64/kernel/time.c +++ b/arch/ppc64/kernel/time.c @@ -372,7 +372,7 @@ int timer_interrupt(struct pt_regs * regs) /* collect purr register values often, for accurate calculations */ #if defined(CONFIG_PPC_PSERIES) - if (cur_cpu_spec->firmware_features & FW_FEATURE_SPLPAR) { + if (ppc64_firmware_features & FW_FEATURE_SPLPAR) { struct cpu_usage *cu = &__get_cpu_var(cpu_usage_array); cu->current_tb = mfspr(SPRN_PURR); } diff --git a/include/asm-ppc64/cputable.h b/include/asm-ppc64/cputable.h index d67fa9e..d55698a 100644 --- a/include/asm-ppc64/cputable.h +++ b/include/asm-ppc64/cputable.h @@ -56,11 +56,6 @@ struct cpu_spec { * BHT, SPD, etc... from head.S before branching to identify_machine */ cpu_setup_t cpu_setup; - - /* This is used to identify firmware features which are available - * to the kernel. - */ - unsigned long firmware_features; }; extern struct cpu_spec cpu_specs[]; @@ -72,6 +67,11 @@ static inline unsigned long cpu_has_feature(unsigned long feature) } +/* This is used to identify firmware features which are available + * to the kernel. + */ +extern unsigned long ppc64_firmware_features; + /* firmware feature bitmask values */ #define FIRMWARE_MAX_FEATURES 63 -- 2.7.4