On Mon, Aug 26, 2019 at 02:51:40PM +0200, Peter Zijlstra wrote: > +#define TP_VEC_MAX (PAGE_SIZE / sizeof(struct text_poke_loc)) > +extern struct text_poke_loc tp_vec[TP_VEC_MAX]; > +extern int tp_vec_nr;
FWIW, that currently results in a batch size of 128, but I've not noticed any delay in flipping ftrace on and off on the commandline. Growing that buffer really shouldn't be a problem, but I'm thinking we'd want solid performance numbers to justify it.
