Message ID | 20230907071311.254313-2-jolsa@kernel.org (mailing list archive) |
---|---|
State | Superseded |
Delegated to: | BPF |
Headers | show |
Series | bpf: Add missed stats for kprobes | expand |
On Thu, Sep 7, 2023 at 12:13 AM Jiri Olsa <jolsa@kernel.org> wrote: nit: The subject doesn't state "missed stats". > > Adding support to gather missed stats for kprobe_multi > programs due to bpf_prog_active protection. > > Signed-off-by: Jiri Olsa <jolsa@kernel.org> Other than that Reviewed-and-tested-by: Song Liu <song@kernel.org> > --- > kernel/trace/bpf_trace.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c > index a7264b2c17ad..279a3d370812 100644 > --- a/kernel/trace/bpf_trace.c > +++ b/kernel/trace/bpf_trace.c > @@ -2710,6 +2710,7 @@ kprobe_multi_link_prog_run(struct bpf_kprobe_multi_link *link, > int err; > > if (unlikely(__this_cpu_inc_return(bpf_prog_active) != 1)) { > + bpf_prog_inc_misses_counter(link->link.prog); > err = 0; > goto out; > } > -- > 2.41.0 > >
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index a7264b2c17ad..279a3d370812 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -2710,6 +2710,7 @@ kprobe_multi_link_prog_run(struct bpf_kprobe_multi_link *link, int err; if (unlikely(__this_cpu_inc_return(bpf_prog_active) != 1)) { + bpf_prog_inc_misses_counter(link->link.prog); err = 0; goto out; }
Adding support to gather missed stats for kprobe_multi programs due to bpf_prog_active protection. Signed-off-by: Jiri Olsa <jolsa@kernel.org> --- kernel/trace/bpf_trace.c | 1 + 1 file changed, 1 insertion(+)