Messages in this thread |  | | Date | Fri, 12 Jun 2015 16:52:03 -0400 | From | Steven Rostedt <> | Subject | Re: [PATCH v7 06/10] trace: Add lock-free tracing_map |
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On Mon, 8 Jun 2015 16:32:05 -0500 Tom Zanussi <tom.zanussi@linux.intel.com> wrote:
> +/** > + * tracing_map_init - Allocate and clear a map's tracing_map_elts > + * @map: The tracing_map to initialize > + * > + * Creates and sets up a map to contain a max_size number of entries > + * equal to a size of 2 ** map_bits. Before using, the map fields > + * should be added to the map with tracing_map_add_key_field() and > + * tracing_map_add_key_field(). tracing_map_init() should then be
Hmm, it's suppose to be added with tracing_map_add_key_field() twice?
-- Steve
> + * called to allocate the array of tracing_map_elts, in order to avoid > + * allocating anything in the map insertion path. The user-specified > + * map_size reflect the max number of entries requested by the user - > + * internally we double that in order to keep the table sparse and > + * keep collisions manageable. > + * > + * See tracing_map.h for a description of tracing_map_ops. > + * > + * Return: the tracing_map * if successful, ERR_PTR if not. > + */
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