Merge branch 'for-linus' of git://git.kernel.dk/linux-block

[cascardo/linux.git] / samples / bpf / tracex2_user.c

diff --git a/samples/bpf/tracex2_user.c b/samples/bpf/tracex2_user.c
index cd0241c..ab5b19e 100644 (file)
--- a/samples/bpf/tracex2_user.c
+++ b/samples/bpf/tracex2_user.c
@@ -37,6 +37,8 @@ struct hist_key {
 static void print_hist_for_pid(int fd, void *task)
 {
        struct hist_key key = {}, next_key;
+       unsigned int nr_cpus = sysconf(_SC_NPROCESSORS_CONF);
+       long values[nr_cpus];
        char starstr[MAX_STARS];
        long value;
        long data[MAX_INDEX] = {};
@@ -49,7 +51,10 @@ static void print_hist_for_pid(int fd, void *task)
                        key = next_key;
                        continue;
                }
-               bpf_lookup_elem(fd, &next_key, &value);
+               bpf_lookup_elem(fd, &next_key, values);
+               value = 0;
+               for (i = 0; i < nr_cpus; i++)
+                       value += values[i];
                ind = next_key.index;
                data[ind] = value;
                if (value && ind > max_ind)