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| author | Thomas Gleixner <tglx@linutronix.de> | 2010-09-30 02:46:07 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2010-10-12 16:39:07 +0200 |
| commit | 13bfe99e09123ef5edb6acb81ba337d2db600b53 (patch) | |
| tree | f96f5be41c90e1ab437bb40a02a8f137deb9e3ab /kernel/irq/proc.c | |
| parent | 1f5a5b87f78fade3ae48dfd55e8765d1d622ea4e (diff) | |
| download | linux-13bfe99e09123ef5edb6acb81ba337d2db600b53.tar.gz linux-13bfe99e09123ef5edb6acb81ba337d2db600b53.tar.bz2 linux-13bfe99e09123ef5edb6acb81ba337d2db600b53.zip | |
genirq: Prepare proc for real sparse irq support
/proc/irq never removes any entries, but when irq descriptors can be
freed for real this is necessary. Otherwise we'd reference a freed
descriptor in /proc/irq/N
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/irq/proc.c')
| -rw-r--r-- | kernel/irq/proc.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/kernel/irq/proc.c b/kernel/irq/proc.c index d9fddf918b41..01b1d3a88983 100644 --- a/kernel/irq/proc.c +++ b/kernel/irq/proc.c @@ -297,6 +297,24 @@ void register_irq_proc(unsigned int irq, struct irq_desc *desc) &irq_spurious_proc_fops, (void *)(long)irq); } +void unregister_irq_proc(unsigned int irq, struct irq_desc *desc) +{ + char name [MAX_NAMELEN]; + + if (!root_irq_dir || !desc->dir) + return; +#ifdef CONFIG_SMP + remove_proc_entry("smp_affinity", desc->dir); + remove_proc_entry("affinity_hint", desc->dir); + remove_proc_entry("node", desc->dir); +#endif + remove_proc_entry("spurious", desc->dir); + + memset(name, 0, MAX_NAMELEN); + sprintf(name, "%u", irq); + remove_proc_entry(name, root_irq_dir); +} + #undef MAX_NAMELEN void unregister_handler_proc(unsigned int irq, struct irqaction *action) |