Re: [RFC PATCH 3/9] writeback: tracing: pass global_wb_domain as tracepoint parameter

[Alexei Starovoitov]

On Thu, Apr 09, 2020 at 03:35:37PM -0400, Mathieu Desnoyers wrote:
>  		if (pause < min_pause) {
> -			trace_balance_dirty_pages(wb,
> +			trace_balance_dirty_pages(&global_wb_domain,
> +						  wb,
>  						  sdtc->thresh,
>  						  sdtc->bg_thresh,
>  						  sdtc->dirty,

argh. 13 arguments to single function ?!
Currently the call site looks like:
                        trace_balance_dirty_pages(wb,
                                                  sdtc->thresh,
                                                  sdtc->bg_thresh,
                                                  sdtc->dirty,
                                                  sdtc->wb_thresh,
                                                  sdtc->wb_dirty,
                                                  dirty_ratelimit,
                                                  task_ratelimit,
                                                  pages_dirtied,
                                                  period,
                                                  min(pause, 0L),
                                                  start_time);
Just pass sdtc as a pointer instead.
Then another wb argument will be fine.