Re: [patch 23/24] perfmon3: kernel documentation

From: Pavel Machek
Date: Sun Oct 19 2008 - 09:38:45 EST


> + * int pfm_create(int flags, pfarg_sinfo_t *s);
> +
> + This function creates a perfmon per-thread session.
> + The flags parameter is currently unused and must be set to 0.
> +
> + Upon return and if s is not NULL, the kernel return the list
> of available


> + PMC and PMD registers. Tools should not assume, they have access to the
> + entire PMU, it may be shared with other kernel subsystems, e.g., on X86
> + the NMI watchdog timer.

How can kernel return anything?

(cesky, pictures)
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