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| author | Thomas Gleixner <tglx@linutronix.de> | 2011-02-07 20:19:55 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-02-19 12:58:14 +0100 |
| commit | dbec07bac614a61e3392c1e7c08cc6a49ad43f7a (patch) | |
| tree | df584e74c8b2fcbe10cce70fd910b4482093fe9a | |
| parent | 35e857cbeb24e75c6f9a9312ac30454eee8c5950 (diff) | |
| download | talos-obmc-linux-dbec07bac614a61e3392c1e7c08cc6a49ad43f7a.tar.gz talos-obmc-linux-dbec07bac614a61e3392c1e7c08cc6a49ad43f7a.zip | |
genirq: Add internal state field to irq_desc
That field will contain internal state information which is not going
to be exposed to anything outside the core code - except via accessor
functions. I'm tired of everyone fiddling in irq_desc.status.
core_internal_state__do_not_mess_with_it is clear enough, annoying to
type and easy to grep for. Offenders will be tracked down and slapped
with stinking trouts.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | include/linux/irqdesc.h | 3 | ||||
| -rw-r--r-- | kernel/irq/internals.h | 6 |
2 files changed, 8 insertions, 1 deletions
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 64794dec93b6..782bf9851a9f 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -19,6 +19,7 @@ struct timer_rand_state; * @handle_irq: highlevel irq-events handler [if NULL, __do_IRQ()] * @action: the irq action chain * @status: status information + * @core_internal_state__do_not_mess_with_it: core internal status information * @depth: disable-depth, for nested irq_disable() calls * @wake_depth: enable depth, for multiple set_irq_wake() callers * @irq_count: stats field to detect stalled irqs @@ -63,7 +64,7 @@ struct irq_desc { irq_flow_handler_t handle_irq; struct irqaction *action; /* IRQ action list */ unsigned int status; /* IRQ status */ - + unsigned int core_internal_state__do_not_mess_with_it; unsigned int depth; /* nested irq disables */ unsigned int wake_depth; /* nested wake enables */ unsigned int irq_count; /* For detecting broken IRQs */ diff --git a/kernel/irq/internals.h b/kernel/irq/internals.h index b61824cdadc6..ae96e688f4e1 100644 --- a/kernel/irq/internals.h +++ b/kernel/irq/internals.h @@ -1,5 +1,9 @@ /* * IRQ subsystem internal functions and variables: + * + * Do not ever include this file from anything else than + * kernel/irq/. Do not even think about using any information outside + * of this file for your non core code. */ #include <linux/irqdesc.h> @@ -9,6 +13,8 @@ # define IRQ_BITMAP_BITS NR_IRQS #endif +#define istate core_internal_state__do_not_mess_with_it + extern int noirqdebug; /* |
