Re: [PATCH v2] tracing/filters: add filter_mutex to protect filterpredicates

[Li Zefan]

Tom Zanussi wrote:
> This patch adds a filter_mutex to prevent the filter predicates from
> being accessed concurrently by various external functions.
> 
> It's based on a previous patch by Li Zefan:
>         "[PATCH 7/7] tracing/filters: make filter preds RCU safe"
> 
> v2 changes:
> 
> - fixed wrong value returned in a add_subsystem_pred() failure case
> noticed by Li Zefan.
> 
> Signed-off-by: Tom Zanussi <tzanussi@xxxxxxxxx>
> 

Reviewed-by: Li Zefan <lizf@xxxxxxxxxxxxxx>
Tested-by: Li Zefan <lizf@xxxxxxxxxxxxxx>


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