lkml.org 
[lkml]   [2002]   [Jan]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Anyone tried 2.5.[23] on Alpha?
Boots and runs fine on my 4 CPU, 8 GB ES45 - cc'ed to Linus.  Linus - we 
need these changes for Alpha to boot any 2.5 after 2.5.2 due to the
scheduling changes.

- Pete

Ivan Kokshaysky wrote:

> On Wed, Jan 16, 2002 at 09:50:28AM -0500, Peter Rival wrote:
>
>>I just wanted to check if anyone has tried 2.5.[23] on Alpha yet. It
>>appears Ingo's scheduler changes haven't been ported to work on the
>>Alpha platform as yet.
>>
>
> I'm running 2.5.3-pre1 on sx164 right now with these patches.
> The scheduler changes are untested on SMP though.
>
> Ivan.
>
> --- 2.5.3p1/include/asm-alpha/io.h Tue Nov 27 20:23:27 2001
> +++ linux/include/asm-alpha/io.h Wed Jan 16 18:30:12 2002
> @@ -60,7 +60,9 @@ static inline void * phys_to_virt(unsign
> return (void *) (address + IDENT_ADDR);
> }
>
> -#define page_to_phys(page) (((page) - (page)->zone->zone_mem_map) << PAGE_SHIFT)
> +#define page_to_phys PAGE_TO_PA
> +/* This depends on working iommu */
> +#define BIO_VMERGE_BOUNDARY (alpha_mv.mv_pci_tbi ? PAGE_SIZE : 0)
>
> /*
> * Change addresses as seen by the kernel (virtual) to addresses as
> --- 2.5.3p1/include/asm-alpha/bitops.h Sat Oct 13 02:35:54 2001
> +++ linux/include/asm-alpha/bitops.h Wed Jan 16 18:30:11 2002
> @@ -73,6 +73,17 @@ clear_bit(unsigned long nr, volatile voi
> /*
> * WARNING: non atomic version.
> */
> +static inline void
> +__clear_bit(unsigned long nr, volatile void * addr)
> +{
> + int *m = ((int *) addr) + (nr >> 5);
> +
> + *m &= ~(1 << (nr & 31));
> +}
> +
> +/*
> + * WARNING: non atomic version.
> + */
> static __inline__ void
> __change_bit(unsigned long nr, volatile void * addr)
> {
> --- 2.5.3p1/include/asm-alpha/smp.h Fri Sep 14 02:21:32 2001
> +++ linux/include/asm-alpha/smp.h Wed Jan 16 18:30:11 2002
> @@ -55,7 +55,7 @@ extern int __cpu_logical_map[NR_CPUS];
> #define cpu_logical_map(cpu) __cpu_logical_map[cpu]
>
> #define hard_smp_processor_id() __hard_smp_processor_id()
> -#define smp_processor_id() (current->processor)
> +#define smp_processor_id() (current->cpu)
>
> extern unsigned long cpu_present_mask;
> #define cpu_online_map cpu_present_mask
> --- 2.5.3p1/include/asm-alpha/sched.h Thu Jan 1 00:00:00 1970
> +++ linux/include/asm-alpha/sched.h Wed Jan 16 18:30:12 2002
> @@ -0,0 +1,30 @@
> +#ifndef __ALPHA_SCHED_H
> +#define __ALPHA_SCHED_H
> +
> +/*
> + * Required for scheduler.
> + */
> +
> +#include <asm/bitops.h>
> +
> +#if MAX_RT_PRIO != 128 || MAX_PRIO != 168
> +# error update this function.
> +#endif
> +
> +static inline int
> +sched_find_first_zero_bit(unsigned long *bitmap)
> +{
> + unsigned long b0 = bitmap[0];
> + unsigned long b1 = bitmap[1];
> + unsigned long b2 = bitmap[2];
> + unsigned long ofs = MAX_RT_PRIO;
> +
> + if (unlikely(~(b0 & b1) != 0)) {
> + b2 = (~b0 ? b0 : b1);
> + ofs = (~b0 ? 0 : 64);
> + }
> +
> + return ffz(b2) + ofs;
> +}
> +
> +#endif /* __ALPHA_SCHED_H */
> --- 2.5.3p1/include/asm-alpha/mmu_context.h Sat Dec 30 01:07:23 2000
> +++ linux/include/asm-alpha/mmu_context.h Wed Jan 16 18:30:12 2002
> @@ -10,6 +10,7 @@
> #include <linux/config.h>
> #include <asm/system.h>
> #include <asm/machvec.h>
> +#include <asm/sched.h>
>
> /*
> * Force a context reload. This is needed when we change the page
> --- 2.5.3p1/drivers/pci/pci.c Wed Jan 16 18:19:21 2002
> +++ linux/drivers/pci/pci.c Wed Jan 16 18:20:00 2002
> @@ -23,6 +23,7 @@
> #include <linux/kmod.h> /* for hotplug_path */
> #include <linux/bitops.h>
> #include <linux/delay.h>
> +#include <linux/sched.h>
>
> #include <asm/page.h>
> #include <asm/dma.h> /* isa_dma_bridge_buggy */
> --- 2.5.3p1/arch/alpha/mm/fault.c Tue Sep 18 03:15:02 2001
> +++ linux/arch/alpha/mm/fault.c Wed Jan 16 18:20:00 2002
> @@ -196,8 +196,7 @@ no_context:
> */
> out_of_memory:
> if (current->pid == 1) {
> - current->policy |= SCHED_YIELD;
> - schedule();
> + yield();
> down_read(&mm->mmap_sem);
> goto survive;
> }
> --- 2.5.3p1/arch/alpha/kernel/setup.c Wed Dec 26 02:39:20 2001
> +++ linux/arch/alpha/kernel/setup.c Wed Jan 16 18:20:00 2002
> @@ -437,7 +437,7 @@ static void srm_console_write(struct con
> static kdev_t srm_console_device(struct console *c)
> {
> /* Huh? */
> - return MKDEV(TTY_MAJOR, 64 + c->index);
> + return mk_kdev(TTY_MAJOR, 64 + c->index);
> }
>
> static int __init srm_console_setup(struct console *co, char *options)
> --- 2.5.3p1/arch/alpha/kernel/srm_env.c Sun Oct 21 21:20:57 2001
> +++ linux/arch/alpha/kernel/srm_env.c Wed Jan 16 18:20:00 2002
> @@ -43,6 +43,7 @@
> #include <linux/proc_fs.h>
> #include <asm/console.h>
> #include <asm/uaccess.h>
> +#include <asm/machvec.h>
>
> #define DIRNAME "srm_environment" /* Subdir in /proc/ */
> #define VERSION "0.0.2" /* Module version */
> --- 2.5.3p1/arch/alpha/kernel/pci-noop.c Fri Jan 4 20:57:24 2002
> +++ linux/arch/alpha/kernel/pci-noop.c Wed Jan 16 18:20:00 2002
> @@ -106,6 +106,7 @@ sys_pciconfig_write(unsigned long bus, u
> void *
> pci_alloc_consistent(struct pci_dev *pdev, size_t size, dma_addr_t *dma_addrp)
> {
> + return NULL;
> }
> void
> pci_free_consistent(struct pci_dev *pdev, size_t size, void *cpu_addr,
> @@ -116,6 +117,7 @@ dma_addr_t
> pci_map_single(struct pci_dev *pdev, void *cpu_addr, size_t size,
> int direction)
> {
> + return 0;
> }
> void
> pci_unmap_single(struct pci_dev *pdev, dma_addr_t dma_addr, size_t size,
> --- 2.5.3p1/arch/alpha/kernel/process.c Thu Dec 27 19:21:28 2001
> +++ linux/arch/alpha/kernel/process.c Wed Jan 16 19:51:24 2002
> @@ -30,6 +30,7 @@
> #include <linux/reboot.h>
> #include <linux/tty.h>
> #include <linux/console.h>
> +#include <linux/init_task.h>
>
> #include <asm/reg.h>
> #include <asm/uaccess.h>
> @@ -74,8 +75,6 @@ void
> cpu_idle(void)
> {
> /* An endless idle loop with no priority at all. */
> - current->nice = 20;
> -
> while (1) {
> /* FIXME -- EV6 and LCA45 know how to power down
> the CPU. */
> --- 2.5.3p1/arch/alpha/kernel/smp.c Wed Jan 16 18:16:19 2002
> +++ linux/arch/alpha/kernel/smp.c Wed Jan 16 18:20:00 2002
> @@ -156,11 +156,6 @@ smp_callin(void)
> {
> int cpuid = hard_smp_processor_id();
>
> - if (current != init_tasks[cpu_number_map(cpuid)]) {
> - printk("BUG: smp_calling: cpu %d current %p init_tasks[cpu_number_map(cpuid)] %p\n",
> - cpuid, current, init_tasks[cpu_number_map(cpuid)]);
> - }
> -
> DBGS(("CALLIN %d state 0x%lx\n", cpuid, current->state));
>
> /* Turn on machine checks. */
> @@ -491,14 +486,11 @@ smp_boot_one_cpu(int cpuid, int cpunum)
> if (idle == &init_task)
> panic("idle process is init_task for CPU %d", cpuid);
>
> - idle->processor = cpuid;
> - idle->cpus_runnable = 1 << cpuid; /* we schedule the first task manually */
> + idle->cpu = cpuid;
> __cpu_logical_map[cpunum] = cpuid;
> __cpu_number_map[cpuid] = cpunum;
>
> - del_from_runqueue(idle);
> unhash_process(idle);
> - init_tasks[cpunum] = idle;
>
> DBGS(("smp_boot_one_cpu: CPU %d state 0x%lx flags 0x%lx\n",
> cpuid, idle->state, idle->flags));
> @@ -605,17 +597,11 @@ smp_boot_cpus(void)
>
> __cpu_number_map[boot_cpuid] = 0;
> __cpu_logical_map[0] = boot_cpuid;
> - current->processor = boot_cpuid;
> + current->cpu = boot_cpuid;
>
> smp_store_cpu_info(boot_cpuid);
> smp_tune_scheduling(boot_cpuid);
> smp_setup_percpu_timer(boot_cpuid);
> -
> - init_idle();
> -
> - /* ??? This should be in init_idle. */
> - atomic_inc(&init_mm.mm_count);
> - current->active_mm = &init_mm;
>
> /* Nothing to do on a UP box, or when told not to. */
> if (smp_num_probed == 1 || max_cpus == 0) {
>
>



-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:23    [W:0.043 / U:0.064 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site