Re: [RFC] [PATCH 2.6.37-rc5-tip 4/20] 4: uprobes: Adding andremove a uprobe in a rb tree.

From: Peter Zijlstra
Date: Tue Jan 25 2011 - 08:56:20 EST


On Thu, 2010-12-16 at 15:28 +0530, Srikar Dronamraju wrote:
> +struct uprobe_consumer {
> + int (*handler)(struct uprobe_consumer *self, struct pt_regs *regs);
> + /*
> + * filter is optional; If a filter exists, handler is run
> + * if and only if filter returns true.
> + */
> + bool (*filter)(struct uprobe_consumer *self, struct task_struct *task);
> +
> + struct uprobe_consumer *next;
> + void *fvalue; /* filter value */
> +};

Since you pass in a pointer to this structure at register_uprobe() its
user allocated, hence you can remove the fvalue thing and let the user
embed this in a larger struct if needed, the filter functions can then
use container_of() to get at the larger data structure.
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