diff options
Diffstat (limited to 'arch/um/kernel/smp.c')
| -rw-r--r-- | arch/um/kernel/smp.c | 36 |
1 files changed, 17 insertions, 19 deletions
diff --git a/arch/um/kernel/smp.c b/arch/um/kernel/smp.c index e6a7778006a..36d89cf8d20 100644 --- a/arch/um/kernel/smp.c +++ b/arch/um/kernel/smp.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2000 - 2003 Jeff Dike (jdike@addtoit.com) + * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) * Licensed under the GPL */ @@ -56,12 +56,12 @@ void smp_send_stop(void) int i; printk(KERN_INFO "Stopping all CPUs..."); - for(i = 0; i < num_online_cpus(); i++){ - if(i == current_thread->cpu) + for (i = 0; i < num_online_cpus(); i++) { + if (i == current_thread->cpu) continue; os_write_file(cpu_data[i].ipi_pipe[1], "S", 1); } - printk("done\n"); + printk(KERN_INFO "done\n"); } static cpumask_t smp_commenced_mask = CPU_MASK_NONE; @@ -72,7 +72,7 @@ static int idle_proc(void *cpup) int cpu = (int) cpup, err; err = os_pipe(cpu_data[cpu].ipi_pipe, 1, 1); - if(err < 0) + if (err < 0) panic("CPU#%d failed to create IPI pipe, err = %d", cpu, -err); os_set_fd_async(cpu_data[cpu].ipi_pipe[0], @@ -80,7 +80,7 @@ static int idle_proc(void *cpup) wmb(); if (cpu_test_and_set(cpu, cpu_callin_map)) { - printk("huh, CPU#%d already present??\n", cpu); + printk(KERN_ERR "huh, CPU#%d already present??\n", cpu); BUG(); } @@ -95,12 +95,11 @@ static int idle_proc(void *cpup) static struct task_struct *idle_thread(int cpu) { struct task_struct *new_task; - unsigned char c; current->thread.request.u.thread.proc = idle_proc; current->thread.request.u.thread.arg = (void *) cpu; new_task = fork_idle(cpu); - if(IS_ERR(new_task)) + if (IS_ERR(new_task)) panic("copy_process failed in idle_thread, error = %ld", PTR_ERR(new_task)); @@ -108,9 +107,7 @@ static struct task_struct *idle_thread(int cpu) { .pid = new_task->thread.mode.tt.extern_pid, .task = new_task } ); idle_threads[cpu] = new_task; - CHOOSE_MODE(os_write_file(new_task->thread.mode.tt.switch_pipe[1], &c, - sizeof(c)), - ({ panic("skas mode doesn't support SMP"); })); + panic("skas mode doesn't support SMP"); return new_task; } @@ -129,14 +126,14 @@ void smp_prepare_cpus(unsigned int maxcpus) cpu_set(me, cpu_callin_map); err = os_pipe(cpu_data[me].ipi_pipe, 1, 1); - if(err < 0) + if (err < 0) panic("CPU#0 failed to create IPI pipe, errno = %d", -err); os_set_fd_async(cpu_data[me].ipi_pipe[0], current->thread.mode.tt.extern_pid); - for(cpu = 1; cpu < ncpus; cpu++){ - printk("Booting processor %d...\n", cpu); + for (cpu = 1; cpu < ncpus; cpu++) { + printk(KERN_INFO "Booting processor %d...\n", cpu); idle = idle_thread(cpu); @@ -147,8 +144,8 @@ void smp_prepare_cpus(unsigned int maxcpus) cpu_relax(); if (cpu_isset(cpu, cpu_callin_map)) - printk("done\n"); - else printk("failed\n"); + printk(KERN_INFO "done\n"); + else printk(KERN_INFO "failed\n"); } } @@ -190,13 +187,14 @@ void IPI_handler(int cpu) break; case 'S': - printk("CPU#%d stopping\n", cpu); - while(1) + printk(KERN_INFO "CPU#%d stopping\n", cpu); + while (1) pause(); break; default: - printk("CPU#%d received unknown IPI [%c]!\n", cpu, c); + printk(KERN_ERR "CPU#%d received unknown IPI [%c]!\n", + cpu, c); break; } } |