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[PARISC] Add __read_mostly section for parisc
Flag a whole bunch of things as __read_mostly on parisc. Also flag a few branches as unlikely() and cleanup a bit of code. Signed-off-by: Helge Deller <deller@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
This commit is contained in:
Helge Deller
Kyle McMartin
parent
02706647a4
commit
8039de10aa
@ -29,9 +29,9 @@
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#include <asm/processor.h>
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#include <asm/sections.h>
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int split_tlb;
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int dcache_stride;
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int icache_stride;
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int split_tlb __read_mostly;
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int dcache_stride __read_mostly;
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int icache_stride __read_mostly;
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EXPORT_SYMBOL(dcache_stride);
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@ -45,9 +45,9 @@ DEFINE_SPINLOCK(pa_tlb_lock);
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EXPORT_SYMBOL(pa_tlb_lock);
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#endif
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struct pdc_cache_info cache_info;
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struct pdc_cache_info cache_info __read_mostly;
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#ifndef CONFIG_PA20
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static struct pdc_btlb_info btlb_info;
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static struct pdc_btlb_info btlb_info __read_mostly;
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#endif
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#ifdef CONFIG_SMP
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@ -332,7 +332,7 @@ void clear_user_page_asm(void *page, unsigned long vaddr)
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}
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#define FLUSH_THRESHOLD 0x80000 /* 0.5MB */
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int parisc_cache_flush_threshold = FLUSH_THRESHOLD;
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int parisc_cache_flush_threshold __read_mostly = FLUSH_THRESHOLD;
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void parisc_setup_cache_timing(void)
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{
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@ -39,7 +39,7 @@
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#include <asm/parisc-device.h>
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/* See comments in include/asm-parisc/pci.h */
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struct hppa_dma_ops *hppa_dma_ops;
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struct hppa_dma_ops *hppa_dma_ops __read_mostly;
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EXPORT_SYMBOL(hppa_dma_ops);
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static struct device root = {
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@ -80,7 +80,7 @@ static unsigned long pdc_result2[32] __attribute__ ((aligned (8)));
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/* Firmware needs to be initially set to narrow to determine the
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* actual firmware width. */
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int parisc_narrow_firmware = 1;
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int parisc_narrow_firmware __read_mostly = 1;
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#endif
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/* On most currently-supported platforms, IODC I/O calls are 32-bit calls
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@ -38,7 +38,7 @@
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*/
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#undef DEBUG_PAT
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int pdc_type = PDC_TYPE_ILLEGAL;
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int pdc_type __read_mostly = PDC_TYPE_ILLEGAL;
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void __init setup_pdc(void)
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{
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@ -120,8 +120,8 @@ set_pmem_entry(physmem_range_t *pmem_ptr, unsigned long start,
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* pdc info is bad in this case).
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*/
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if ( ((start & (PAGE_SIZE - 1)) != 0)
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|| ((pages4k & ((1UL << PDC_PAGE_ADJ_SHIFT) - 1)) != 0) ) {
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if (unlikely( ((start & (PAGE_SIZE - 1)) != 0)
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|| ((pages4k & ((1UL << PDC_PAGE_ADJ_SHIFT) - 1)) != 0) )) {
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panic("Memory range doesn't align with page size!\n");
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}
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@ -33,10 +33,10 @@
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#include <asm/uaccess.h>
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#include <asm/tlbflush.h> /* for purge_tlb_*() macros */
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static struct proc_dir_entry * proc_gsc_root = NULL;
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static struct proc_dir_entry * proc_gsc_root __read_mostly = NULL;
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static int pcxl_proc_info(char *buffer, char **start, off_t offset, int length);
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static unsigned long pcxl_used_bytes = 0;
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static unsigned long pcxl_used_pages = 0;
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static unsigned long pcxl_used_bytes __read_mostly = 0;
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static unsigned long pcxl_used_pages __read_mostly = 0;
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extern unsigned long pcxl_dma_start; /* Start of pcxl dma mapping area */
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static spinlock_t pcxl_res_lock;
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@ -30,6 +30,7 @@
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#include <linux/kernel.h>
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#include <linux/reboot.h>
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#include <linux/notifier.h>
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#include <linux/cache.h>
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#include <asm/pdc_chassis.h>
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#include <asm/processor.h>
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@ -38,8 +39,8 @@
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#ifdef CONFIG_PDC_CHASSIS
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static int pdc_chassis_old = 0;
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static unsigned int pdc_chassis_enabled = 1;
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static int pdc_chassis_old __read_mostly = 0;
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static unsigned int pdc_chassis_enabled __read_mostly = 1;
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/**
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@ -132,7 +133,7 @@ void __init parisc_pdc_chassis_init(void)
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{
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#ifdef CONFIG_PDC_CHASSIS
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int handle = 0;
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if (pdc_chassis_enabled) {
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if (likely(pdc_chassis_enabled)) {
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DPRINTK(KERN_DEBUG "%s: parisc_pdc_chassis_init()\n", __FILE__);
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/* Let see if we have something to handle... */
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@ -142,7 +143,7 @@ void __init parisc_pdc_chassis_init(void)
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printk(KERN_INFO "Enabling PDC_PAT chassis codes support.\n");
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handle = 1;
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}
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else if (pdc_chassis_old) {
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else if (unlikely(pdc_chassis_old)) {
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printk(KERN_INFO "Enabling old style chassis LED panel support.\n");
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handle = 1;
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}
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@ -178,7 +179,7 @@ int pdc_chassis_send_status(int message)
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/* Maybe we should do that in an other way ? */
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int retval = 0;
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#ifdef CONFIG_PDC_CHASSIS
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if (pdc_chassis_enabled) {
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if (likely(pdc_chassis_enabled)) {
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DPRINTK(KERN_DEBUG "%s: pdc_chassis_send_status(%d)\n", __FILE__, message);
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@ -214,7 +215,7 @@ int pdc_chassis_send_status(int message)
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}
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} else retval = -1;
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#else
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if (pdc_chassis_old) {
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if (unlikely(pdc_chassis_old)) {
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switch (message) {
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case PDC_CHASSIS_DIRECT_BSTART:
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case PDC_CHASSIS_DIRECT_BCOMPLETE:
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@ -66,10 +66,10 @@ struct rdr_tbl_ent {
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uint8_t write_control;
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};
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static int perf_processor_interface = UNKNOWN_INTF;
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static int perf_enabled = 0;
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static int perf_processor_interface __read_mostly = UNKNOWN_INTF;
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static int perf_enabled __read_mostly = 0;
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static spinlock_t perf_lock;
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struct parisc_device *cpu_device = NULL;
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struct parisc_device *cpu_device __read_mostly = NULL;
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/* RDRs to write for PCX-W */
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static int perf_rdrs_W[] =
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@ -54,7 +54,7 @@
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#include <asm/uaccess.h>
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#include <asm/unwind.h>
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static int hlt_counter;
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static int hlt_counter __read_mostly;
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/*
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* Power off function, if any
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@ -44,10 +44,10 @@
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#include <asm/irq.h> /* for struct irq_region */
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#include <asm/parisc-device.h>
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struct system_cpuinfo_parisc boot_cpu_data;
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struct system_cpuinfo_parisc boot_cpu_data __read_mostly;
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EXPORT_SYMBOL(boot_cpu_data);
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struct cpuinfo_parisc cpu_data[NR_CPUS];
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struct cpuinfo_parisc cpu_data[NR_CPUS] __read_mostly;
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/*
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** PARISC CPU driver - claim "device" and initialize CPU data structures.
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@ -378,12 +378,12 @@ show_cpuinfo (struct seq_file *m, void *v)
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return 0;
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}
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static struct parisc_device_id processor_tbl[] = {
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static struct parisc_device_id processor_tbl[] __read_mostly = {
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{ HPHW_NPROC, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, SVERSION_ANY_ID },
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{ 0, }
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};
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static struct parisc_driver cpu_driver = {
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static struct parisc_driver cpu_driver __read_mostly = {
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.name = "CPU",
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.id_table = processor_tbl,
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.probe = processor_probe
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@ -46,15 +46,15 @@
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#include <asm/io.h>
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#include <asm/setup.h>
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char command_line[COMMAND_LINE_SIZE];
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char command_line[COMMAND_LINE_SIZE] __read_mostly;
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/* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */
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struct proc_dir_entry * proc_runway_root = NULL;
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struct proc_dir_entry * proc_gsc_root = NULL;
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struct proc_dir_entry * proc_mckinley_root = NULL;
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struct proc_dir_entry * proc_runway_root __read_mostly = NULL;
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struct proc_dir_entry * proc_gsc_root __read_mostly = NULL;
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struct proc_dir_entry * proc_mckinley_root __read_mostly = NULL;
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#if !defined(CONFIG_PA20) && (defined(CONFIG_IOMMU_CCIO) || defined(CONFIG_IOMMU_SBA))
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int parisc_bus_is_phys = 1; /* Assume no IOMMU is present */
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int parisc_bus_is_phys __read_mostly = 1; /* Assume no IOMMU is present */
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EXPORT_SYMBOL(parisc_bus_is_phys);
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#endif
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@ -58,9 +58,9 @@ DEFINE_SPINLOCK(smp_lock);
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volatile struct task_struct *smp_init_current_idle_task;
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static volatile int cpu_now_booting = 0; /* track which CPU is booting */
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static volatile int cpu_now_booting __read_mostly = 0; /* track which CPU is booting */
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static int parisc_max_cpus = 1;
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static int parisc_max_cpus __read_mostly = 1;
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/* online cpus are ones that we've managed to bring up completely
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* possible cpus are all valid cpu
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@ -71,8 +71,8 @@ static int parisc_max_cpus = 1;
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* empty in the beginning.
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*/
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cpumask_t cpu_online_map = CPU_MASK_NONE; /* Bitmap of online CPUs */
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cpumask_t cpu_possible_map = CPU_MASK_ALL; /* Bitmap of Present CPUs */
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cpumask_t cpu_online_map __read_mostly = CPU_MASK_NONE; /* Bitmap of online CPUs */
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cpumask_t cpu_possible_map __read_mostly = CPU_MASK_ALL; /* Bitmap of Present CPUs */
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EXPORT_SYMBOL(cpu_online_map);
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EXPORT_SYMBOL(cpu_possible_map);
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@ -36,8 +36,8 @@
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/* xtime and wall_jiffies keep wall-clock time */
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extern unsigned long wall_jiffies;
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static long clocktick; /* timer cycles per tick */
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static long halftick;
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static long clocktick __read_mostly; /* timer cycles per tick */
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static long halftick __read_mostly;
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#ifdef CONFIG_SMP
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extern void smp_do_timer(struct pt_regs *regs);
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@ -20,8 +20,9 @@
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#include <linux/init.h>
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#include <linux/smp.h>
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#include <linux/cpu.h>
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#include <linux/cache.h>
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static struct cpu cpu_devices[NR_CPUS];
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static struct cpu cpu_devices[NR_CPUS] __read_mostly;
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static int __init topology_init(void)
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{
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@ -122,7 +122,7 @@
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#define ERR_NOTHANDLED -1
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#define ERR_PAGEFAULT -2
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int unaligned_enabled = 1;
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int unaligned_enabled __read_mostly = 1;
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void die_if_kernel (char *str, struct pt_regs *regs, long err);
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@ -35,7 +35,7 @@ static spinlock_t unwind_lock;
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* we can call unwind_init as early in the bootup process as
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* possible (before the slab allocator is initialized)
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*/
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static struct unwind_table kernel_unwind_table;
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static struct unwind_table kernel_unwind_table __read_mostly;
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static LIST_HEAD(unwind_tables);
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static inline const struct unwind_table_entry *
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@ -105,6 +105,10 @@ SECTIONS
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. = ALIGN(16);
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.data.lock_aligned : { *(.data.lock_aligned) }
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/* rarely changed data like cpu maps */
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. = ALIGN(16);
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.data.read_mostly : { *(.data.read_mostly) }
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_edata = .; /* End of data section */
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. = ALIGN(16384); /* init_task */
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@ -36,9 +36,9 @@ extern char _end; /* end of BSS, defined by linker */
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extern char __init_begin, __init_end;
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#ifdef CONFIG_DISCONTIGMEM
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struct node_map_data node_data[MAX_NUMNODES];
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bootmem_data_t bmem_data[MAX_NUMNODES];
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unsigned char pfnnid_map[PFNNID_MAP_MAX];
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struct node_map_data node_data[MAX_NUMNODES] __read_mostly;
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bootmem_data_t bmem_data[MAX_NUMNODES] __read_mostly;
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unsigned char pfnnid_map[PFNNID_MAP_MAX] __read_mostly;
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#endif
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static struct resource data_resource = {
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@ -58,14 +58,14 @@ static struct resource pdcdata_resource = {
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.flags = IORESOURCE_BUSY | IORESOURCE_MEM,
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};
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static struct resource sysram_resources[MAX_PHYSMEM_RANGES];
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static struct resource sysram_resources[MAX_PHYSMEM_RANGES] __read_mostly;
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/* The following array is initialized from the firmware specific
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* information retrieved in kernel/inventory.c.
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*/
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physmem_range_t pmem_ranges[MAX_PHYSMEM_RANGES];
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int npmem_ranges;
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physmem_range_t pmem_ranges[MAX_PHYSMEM_RANGES] __read_mostly;
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int npmem_ranges __read_mostly;
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#ifdef __LP64__
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#define MAX_MEM (~0UL)
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@ -73,7 +73,7 @@ int npmem_ranges;
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#define MAX_MEM (3584U*1024U*1024U)
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#endif /* !__LP64__ */
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static unsigned long mem_limit = MAX_MEM;
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static unsigned long mem_limit __read_mostly = MAX_MEM;
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static void __init mem_limit_func(void)
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{
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@ -431,11 +431,11 @@ void free_initmem(void)
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#define SET_MAP_OFFSET(x) ((void *)(((unsigned long)(x) + VM_MAP_OFFSET) \
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& ~(VM_MAP_OFFSET-1)))
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void *vmalloc_start;
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void *vmalloc_start __read_mostly;
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EXPORT_SYMBOL(vmalloc_start);
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#ifdef CONFIG_PA11
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unsigned long pcxl_dma_start;
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unsigned long pcxl_dma_start __read_mostly;
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#endif
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void __init mem_init(void)
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@ -475,7 +475,7 @@ int do_check_pgt_cache(int low, int high)
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return 0;
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}
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unsigned long *empty_zero_page;
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unsigned long *empty_zero_page __read_mostly;
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void show_mem(void)
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{
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@ -57,7 +57,7 @@
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static DEFINE_SPINLOCK(eisa_irq_lock);
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void __iomem *eisa_eeprom_addr;
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void __iomem *eisa_eeprom_addr __read_mostly;
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/* We can only have one EISA adapter in the system because neither
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* implementation can be flexed.
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@ -141,7 +141,7 @@ static int slave_mask;
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* in the furure.
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*/
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/* irq 13,8,2,1,0 must be edge */
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static unsigned int eisa_irq_level; /* default to edge triggered */
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static unsigned int eisa_irq_level __read_mostly; /* default to edge triggered */
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/* called by free irq */
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@ -150,7 +150,7 @@ void __init lasi_led_init(unsigned long lasi_hpa)
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*
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*/
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static unsigned long lasi_power_off_hpa;
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static unsigned long lasi_power_off_hpa __read_mostly;
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static void lasi_power_off(void)
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{
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@ -167,7 +167,7 @@
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/* non-postable I/O port space, densely packed */
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#define LBA_PORT_BASE (PCI_F_EXTEND | 0xfee00000UL)
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static void __iomem *astro_iop_base;
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static void __iomem *astro_iop_base __read_mostly;
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#define ELROY_HVERS 0x782
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#define MERCURY_HVERS 0x783
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@ -3,7 +3,7 @@
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*
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* (c) Copyright 2000 Red Hat Software
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* (c) Copyright 2000 Helge Deller <hdeller@redhat.com>
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* (c) Copyright 2001-2004 Helge Deller <deller@gmx.de>
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* (c) Copyright 2001-2005 Helge Deller <deller@gmx.de>
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* (c) Copyright 2001 Randolph Chung <tausq@debian.org>
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*
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* This program is free software; you can redistribute it and/or modify
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@ -56,13 +56,13 @@
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relatively large amount of CPU time, some of the calculations can be
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turned off with the following variables (controlled via procfs) */
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static int led_type = -1;
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static int led_type __read_mostly = -1;
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static unsigned char lastleds; /* LED state from most recent update */
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static unsigned int led_heartbeat = 1;
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static unsigned int led_diskio = 1;
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static unsigned int led_lanrxtx = 1;
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static char lcd_text[32];
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static char lcd_text_default[32];
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static unsigned int led_heartbeat __read_mostly = 1;
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static unsigned int led_diskio __read_mostly = 1;
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static unsigned int led_lanrxtx __read_mostly = 1;
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static char lcd_text[32] __read_mostly;
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static char lcd_text_default[32] __read_mostly;
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static struct workqueue_struct *led_wq;
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@ -108,7 +108,7 @@ struct pdc_chassis_lcd_info_ret_block {
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/* lcd_info is pre-initialized to the values needed to program KittyHawk LCD's
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* HP seems to have used Sharp/Hitachi HD44780 LCDs most of the time. */
|
||||
static struct pdc_chassis_lcd_info_ret_block
|
||||
lcd_info __attribute__((aligned(8))) =
|
||||
lcd_info __attribute__((aligned(8))) __read_mostly =
|
||||
{
|
||||
.model = DISPLAY_MODEL_LCD,
|
||||
.lcd_width = 16,
|
||||
@ -144,7 +144,7 @@ static int start_task(void)
|
||||
device_initcall(start_task);
|
||||
|
||||
/* ptr to LCD/LED-specific function */
|
||||
static void (*led_func_ptr) (unsigned char);
|
||||
static void (*led_func_ptr) (unsigned char) __read_mostly;
|
||||
|
||||
#ifdef CONFIG_PROC_FS
|
||||
static int led_proc_read(char *page, char **start, off_t off, int count,
|
||||
|
||||
@ -70,7 +70,7 @@ MODULE_DESCRIPTION("sysfs interface to HP PDC Stable Storage data");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_VERSION(PDCS_VERSION);
|
||||
|
||||
static unsigned long pdcs_size = 0;
|
||||
static unsigned long pdcs_size __read_mostly;
|
||||
|
||||
/* This struct defines what we need to deal with a parisc pdc path entry */
|
||||
struct pdcspath_entry {
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
* linux/arch/parisc/kernel/power.c
|
||||
* HP PARISC soft power switch support driver
|
||||
*
|
||||
* Copyright (c) 2001-2002 Helge Deller <deller@gmx.de>
|
||||
* Copyright (c) 2001-2005 Helge Deller <deller@gmx.de>
|
||||
* All rights reserved.
|
||||
*
|
||||
*
|
||||
@ -102,7 +102,7 @@ static DECLARE_WORK(poweroff_work, deferred_poweroff, NULL);
|
||||
|
||||
static void poweroff(void)
|
||||
{
|
||||
static int powering_off;
|
||||
static int powering_off __read_mostly;
|
||||
|
||||
if (powering_off)
|
||||
return;
|
||||
@ -113,7 +113,7 @@ static void poweroff(void)
|
||||
|
||||
|
||||
/* local time-counter for shutdown */
|
||||
static int shutdown_timer;
|
||||
static int shutdown_timer __read_mostly;
|
||||
|
||||
/* check, give feedback and start shutdown after one second */
|
||||
static void process_shutdown(void)
|
||||
@ -139,7 +139,7 @@ static void process_shutdown(void)
|
||||
DECLARE_TASKLET_DISABLED(power_tasklet, NULL, 0);
|
||||
|
||||
/* soft power switch enabled/disabled */
|
||||
int pwrsw_enabled = 1;
|
||||
int pwrsw_enabled __read_mostly = 1;
|
||||
|
||||
/*
|
||||
* On gecko style machines (e.g. 712/xx and 715/xx)
|
||||
@ -149,7 +149,7 @@ int pwrsw_enabled = 1;
|
||||
*/
|
||||
static void gecko_tasklet_func(unsigned long unused)
|
||||
{
|
||||
if (!pwrsw_enabled)
|
||||
if (unlikely(!pwrsw_enabled))
|
||||
return;
|
||||
|
||||
if (__getDIAG(25) & 0x80000000) {
|
||||
@ -173,7 +173,7 @@ static void polling_tasklet_func(unsigned long soft_power_reg)
|
||||
{
|
||||
unsigned long current_status;
|
||||
|
||||
if (!pwrsw_enabled)
|
||||
if (unlikely(!pwrsw_enabled))
|
||||
return;
|
||||
|
||||
current_status = gsc_readl(soft_power_reg);
|
||||
|
||||
@ -13,7 +13,7 @@
|
||||
#define SMP_CACHE_BYTES L1_CACHE_BYTES
|
||||
#endif
|
||||
|
||||
#if defined(CONFIG_X86) || defined(CONFIG_SPARC64) || defined(CONFIG_IA64)
|
||||
#if defined(CONFIG_X86) || defined(CONFIG_SPARC64) || defined(CONFIG_IA64) || defined(CONFIG_PARISC)
|
||||
#define __read_mostly __attribute__((__section__(".data.read_mostly")))
|
||||
#else
|
||||
#define __read_mostly
|
||||
|
||||
Loading…
Reference in New Issue
Block a user