diff options
| author | Kanoj Sarcar <kanoj@engr.sgi.com> | 2000-05-17 05:06:47 +0000 |
|---|---|---|
| committer | Kanoj Sarcar <kanoj@engr.sgi.com> | 2000-05-17 05:06:47 +0000 |
| commit | 2981bea24cd14fa3ddbc6f067b72e951347da3d1 (patch) | |
| tree | b79e3f1f559ccb35ce83e525d8fbcef305d1fe44 /arch/mips64 | |
| parent | c37170bc17a42d62fdb980266929abe216b32fff (diff) | |
Modify the SMP bootup sequence slightly, so that the master waits
a little longer till the slaves are about ready to begin their idle
loop.
Diffstat (limited to 'arch/mips64')
| -rw-r--r-- | arch/mips64/sgi-ip27/ip27-init.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/mips64/sgi-ip27/ip27-init.c b/arch/mips64/sgi-ip27/ip27-init.c index 9e2df3662..6d3e70298 100644 --- a/arch/mips64/sgi-ip27/ip27-init.c +++ b/arch/mips64/sgi-ip27/ip27-init.c @@ -40,6 +40,7 @@ static int fine_mode = 0; int maxcpus; static spinlock_t hub_mask_lock = SPIN_LOCK_UNLOCKED; static cnodemask_t hub_init_mask; +static atomic_t numstarted = ATOMIC_INIT(1); cnodeid_t nasid_to_compact_node[MAX_NASIDS]; nasid_t compact_to_nasid_node[MAX_COMPACT_NODES]; @@ -379,10 +380,8 @@ int __init start_secondary(void) return cpu_idle(); } -static atomic_t numstarted = ATOMIC_INIT(0); void cboot(void) { - atomic_inc(&numstarted); CPUMASK_CLRB(boot_barrier, getcpuid()); /* needs atomicity */ per_cpu_init(); #if 0 @@ -392,6 +391,7 @@ void cboot(void) #endif _flush_tlb_all(); flush_cache_all(); + atomic_inc(&numstarted); start_secondary(); } @@ -464,9 +464,11 @@ void allowboot(void) } } - /* while(atomic_read(&numstarted) != (maxcpus - num_cpus)) */ - if (maxcpus > 1) while(atomic_read(&numstarted) == 0); - printk("Holding %d cpus slave\n", atomic_read(&numstarted)); + /* + * Wait for all cpus to start up and initialize their hubs, + * and discover the io devices they will control. + */ + while(atomic_read(&numstarted) != maxcpus); #ifdef LATER Wait logic goes here. |