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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2011-01-23 20:22:16 +0300 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2011-01-24 21:27:32 +0300 |
| commit | 8a327f23e23fa509e6e3c2263ae1cc0a67dec387 (patch) | |
| tree | 119abf09e1ec9babaf78e6889187f9d54864b118 /init/main.c | |
| parent | 5a9a8d1a99c617df82339456fbdd30d6ed3a856b (diff) | |
| parent | d315777b32a4696feb86f2a0c9e9f39c94683649 (diff) | |
| download | linux-8a327f23e23fa509e6e3c2263ae1cc0a67dec387.tar.xz | |
Merge remote branch 'linus/master' into drm-intel-fixes
Merge with Linus to resolve conflicting fixes for the reusing the stale
HEAD value during intel_ring_wait().
Conflicts:
drivers/gpu/drm/i915/intel_ringbuffer.c
Diffstat (limited to 'init/main.c')
| -rw-r--r-- | init/main.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/init/main.c b/init/main.c index 00799c1d4628..33c37c379e96 100644 --- a/init/main.c +++ b/init/main.c @@ -96,6 +96,15 @@ static inline void mark_rodata_ro(void) { } extern void tc_init(void); #endif +/* + * Debug helper: via this flag we know that we are in 'early bootup code' + * where only the boot processor is running with IRQ disabled. This means + * two things - IRQ must not be enabled before the flag is cleared and some + * operations which are not allowed with IRQ disabled are allowed while the + * flag is set. + */ +bool early_boot_irqs_disabled __read_mostly; + enum system_states system_state __read_mostly; EXPORT_SYMBOL(system_state); @@ -554,7 +563,7 @@ asmlinkage void __init start_kernel(void) cgroup_init_early(); local_irq_disable(); - early_boot_irqs_off(); + early_boot_irqs_disabled = true; /* * Interrupts are still disabled. Do necessary setups, then @@ -621,7 +630,7 @@ asmlinkage void __init start_kernel(void) if (!irqs_disabled()) printk(KERN_CRIT "start_kernel(): bug: interrupts were " "enabled early\n"); - early_boot_irqs_on(); + early_boot_irqs_disabled = false; local_irq_enable(); /* Interrupts are enabled now so all GFP allocations are safe. */ |