On Wed, Apr 27, 2022 at 2:04 PM Jiri Olsa <jolsa@xxxxxxxxxx> wrote: > > Adding ftrace_lookup_symbols function that resolves array of symbols > with single pass over kallsyms. > > The user provides array of string pointers with count and pointer to > allocated array for resolved values. > > int ftrace_lookup_symbols(const char **sorted_syms, size_t cnt, > unsigned long *addrs) > > It iterates all kalsyms symbols and tries to loop up each in provided typo: kallsyms > symbols array with bsearch. The symbols array needs to be sorted by > name for this reason. > > We also check each symbol to pass ftrace_location, because this API > will be used for fprobe symbols resolving. > > Suggested-by: Andrii Nakryiko <andrii@xxxxxxxxxx> > Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx> > --- LGTM. Acked-by: Andrii Nakryiko <andrii@xxxxxxxxxx> > include/linux/ftrace.h | 6 ++++ > kernel/kallsyms.c | 1 + > kernel/trace/ftrace.c | 62 ++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 69 insertions(+) > [...]
