summaryrefslogtreecommitdiffstats
path: root/init/main.c
diff options
context:
space:
mode:
Diffstat (limited to 'init/main.c')
-rw-r--r--init/main.c53
1 files changed, 21 insertions, 32 deletions
diff --git a/init/main.c b/init/main.c
index 63534a1..ceed17a 100644
--- a/init/main.c
+++ b/init/main.c
@@ -9,6 +9,8 @@
* Simplified starting of init: Michael A. Griffith <grif@acm.org>
*/
+#define DEBUG /* Enable initcall_debug */
+
#include <linux/types.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
@@ -174,8 +176,8 @@ static int __init obsolete_checksetup(char *line)
if (line[n] == '\0' || line[n] == '=')
had_early_param = 1;
} else if (!p->setup_func) {
- printk(KERN_WARNING "Parameter %s is obsolete,"
- " ignored\n", p->str);
+ pr_warn("Parameter %s is obsolete, ignored\n",
+ p->str);
return 1;
} else if (p->setup_func(line + n))
return 1;
@@ -384,7 +386,7 @@ static noinline void __init_refok rest_init(void)
init_idle_bootup_task(current);
schedule_preempt_disabled();
/* Call into cpu_idle with preempt disabled */
- cpu_idle();
+ cpu_startup_entry(CPUHP_ONLINE);
}
/* Check for early params. */
@@ -398,8 +400,7 @@ static int __init do_early_param(char *param, char *val, const char *unused)
strcmp(p->str, "earlycon") == 0)
) {
if (p->setup_func(val) != 0)
- printk(KERN_WARNING
- "Malformed early option '%s'\n", param);
+ pr_warn("Malformed early option '%s'\n", param);
}
}
/* We accept everything at this stage. */
@@ -494,10 +495,9 @@ asmlinkage void __init start_kernel(void)
* Interrupts are still disabled. Do necessary setups, then
* enable them
*/
- tick_init();
boot_cpu_init();
page_address_init();
- printk(KERN_NOTICE "%s", linux_banner);
+ pr_notice("%s", linux_banner);
setup_arch(&command_line);
mm_init_owner(&init_mm, &init_task);
mm_init_cpumask(&init_mm);
@@ -509,7 +509,7 @@ asmlinkage void __init start_kernel(void)
build_all_zonelists(NULL, NULL);
page_alloc_init();
- printk(KERN_NOTICE "Kernel command line: %s\n", boot_command_line);
+ pr_notice("Kernel command line: %s\n", boot_command_line);
parse_early_param();
parse_args("Booting kernel", static_command_line, __start___param,
__stop___param - __start___param,
@@ -539,11 +539,8 @@ asmlinkage void __init start_kernel(void)
* fragile until we cpu_idle() for the first time.
*/
preempt_disable();
- if (!irqs_disabled()) {
- printk(KERN_WARNING "start_kernel(): bug: interrupts were "
- "enabled *very* early, fixing it\n");
+ if (WARN(!irqs_disabled(), "Interrupts were enabled *very* early, fixing it\n"))
local_irq_disable();
- }
idr_init_cache();
perf_event_init();
rcu_init();
@@ -551,6 +548,7 @@ asmlinkage void __init start_kernel(void)
/* init some links before init_ISA_irqs() */
early_irq_init();
init_IRQ();
+ tick_init();
init_timers();
hrtimers_init();
softirq_init();
@@ -558,9 +556,7 @@ asmlinkage void __init start_kernel(void)
time_init();
profile_init();
call_function_init();
- if (!irqs_disabled())
- printk(KERN_CRIT "start_kernel(): bug: interrupts were "
- "enabled early\n");
+ WARN(!irqs_disabled(), "Interrupts were enabled early\n");
early_boot_irqs_disabled = false;
local_irq_enable();
@@ -587,8 +583,7 @@ asmlinkage void __init start_kernel(void)
#ifdef CONFIG_BLK_DEV_INITRD
if (initrd_start && !initrd_below_start_ok &&
page_to_pfn(virt_to_page((void *)initrd_start)) < min_low_pfn) {
- printk(KERN_CRIT "initrd overwritten (0x%08lx < 0x%08lx) - "
- "disabling it.\n",
+ pr_crit("initrd overwritten (0x%08lx < 0x%08lx) - disabling it.\n",
page_to_pfn(virt_to_page((void *)initrd_start)),
min_low_pfn);
initrd_start = 0;
@@ -667,14 +662,14 @@ static int __init_or_module do_one_initcall_debug(initcall_t fn)
unsigned long long duration;
int ret;
- printk(KERN_DEBUG "calling %pF @ %i\n", fn, task_pid_nr(current));
+ pr_debug("calling %pF @ %i\n", fn, task_pid_nr(current));
calltime = ktime_get();
ret = fn();
rettime = ktime_get();
delta = ktime_sub(rettime, calltime);
duration = (unsigned long long) ktime_to_ns(delta) >> 10;
- printk(KERN_DEBUG "initcall %pF returned %d after %lld usecs\n", fn,
- ret, duration);
+ pr_debug("initcall %pF returned %d after %lld usecs\n",
+ fn, ret, duration);
return ret;
}
@@ -691,20 +686,15 @@ int __init_or_module do_one_initcall(initcall_t fn)
msgbuf[0] = 0;
- if (ret && ret != -ENODEV && initcall_debug)
- sprintf(msgbuf, "error code %d ", ret);
-
if (preempt_count() != count) {
- strlcat(msgbuf, "preemption imbalance ", sizeof(msgbuf));
+ sprintf(msgbuf, "preemption imbalance ");
preempt_count() = count;
}
if (irqs_disabled()) {
strlcat(msgbuf, "disabled interrupts ", sizeof(msgbuf));
local_irq_enable();
}
- if (msgbuf[0]) {
- printk("initcall %pF returned with %s\n", fn, msgbuf);
- }
+ WARN(msgbuf[0], "initcall %pF returned with %s\n", fn, msgbuf);
return ret;
}
@@ -832,8 +822,7 @@ static int __ref kernel_init(void *unused)
if (ramdisk_execute_command) {
if (!run_init_process(ramdisk_execute_command))
return 0;
- printk(KERN_WARNING "Failed to execute %s\n",
- ramdisk_execute_command);
+ pr_err("Failed to execute %s\n", ramdisk_execute_command);
}
/*
@@ -845,8 +834,8 @@ static int __ref kernel_init(void *unused)
if (execute_command) {
if (!run_init_process(execute_command))
return 0;
- printk(KERN_WARNING "Failed to execute %s. Attempting "
- "defaults...\n", execute_command);
+ pr_err("Failed to execute %s. Attempting defaults...\n",
+ execute_command);
}
if (!run_init_process("/sbin/init") ||
!run_init_process("/etc/init") ||
@@ -891,7 +880,7 @@ static noinline void __init kernel_init_freeable(void)
/* Open the /dev/console on the rootfs, this should never fail */
if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
- printk(KERN_WARNING "Warning: unable to open an initial console.\n");
+ pr_err("Warning: unable to open an initial console.\n");
(void) sys_dup(0);
(void) sys_dup(0);
OpenPOWER on IntegriCloud