auto import from //depot/cupcake/@135843
diff --git a/daemon/opd_stats.c b/daemon/opd_stats.c
new file mode 100644
index 0000000..ddb1940
--- /dev/null
+++ b/daemon/opd_stats.c
@@ -0,0 +1,85 @@
+/**
+ * @file daemon/opd_stats.c
+ * Management of daemon statistics
+ *
+ * @remark Copyright 2002 OProfile authors
+ * @remark Read the file COPYING
+ *
+ * @author John Levon
+ * @author Philippe Elie
+ */
+
+#include "opd_stats.h"
+#include "oprofiled.h"
+
+#include "op_get_time.h"
+
+#include <dirent.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+unsigned long opd_stats[OPD_MAX_STATS];
+
+/**
+ * print_if - print an integer value read from file filename,
+ * do nothing if the value read == -1 except if force is non-zero
+ */
+static void print_if(char const * fmt, char const * path, char const * filename, int force)
+{
+ int value = opd_read_fs_int(path, filename, 0);
+ if (value != -1 || force)
+ printf(fmt, value);
+}
+
+/**
+ * opd_print_stats - print out latest statistics
+ */
+void opd_print_stats(void)
+{
+ DIR * dir;
+ struct dirent * dirent;
+
+ printf("\n%s\n", op_get_time());
+ printf("Nr. sample dumps: %lu\n", opd_stats[OPD_DUMP_COUNT]);
+ printf("Nr. non-backtrace samples: %lu\n", opd_stats[OPD_SAMPLES]);
+ printf("Nr. kernel samples: %lu\n", opd_stats[OPD_KERNEL]);
+ printf("Nr. lost samples (no kernel/user): %lu\n", opd_stats[OPD_NO_CTX]);
+ printf("Nr. lost kernel samples: %lu\n", opd_stats[OPD_LOST_KERNEL]);
+ printf("Nr. incomplete code structs: %lu\n", opd_stats[OPD_DANGLING_CODE]);
+ printf("Nr. samples lost due to sample file open failure: %lu\n",
+ opd_stats[OPD_LOST_SAMPLEFILE]);
+ printf("Nr. samples lost due to no permanent mapping: %lu\n",
+ opd_stats[OPD_LOST_NO_MAPPING]);
+ print_if("Nr. event lost due to buffer overflow: %u\n",
+ "/dev/oprofile/stats", "event_lost_overflow", 1);
+ print_if("Nr. samples lost due to no mapping: %u\n",
+ "/dev/oprofile/stats", "sample_lost_no_mapping", 1);
+ print_if("Nr. backtraces skipped due to no file mapping: %u\n",
+ "/dev/oprofile/stats", "bt_lost_no_mapping", 0);
+ print_if("Nr. samples lost due to no mm: %u\n",
+ "/dev/oprofile/stats", "sample_lost_no_mm", 1);
+
+ if (!(dir = opendir("/dev/oprofile/stats/")))
+ goto out;
+ while ((dirent = readdir(dir))) {
+ int cpu_nr;
+ char path[256];
+ if (sscanf(dirent->d_name, "cpu%d", &cpu_nr) != 1)
+ continue;
+ snprintf(path, 256, "/dev/oprofile/stats/%s", dirent->d_name);
+
+ print_if("Nr. samples lost cpu buffer overflow: %u\n",
+ path, "sample_lost_overflow", 1);
+ print_if("Nr. samples lost task exit: %u\n",
+ path, "sample_lost_task_exit", 0);
+ print_if("Nr. samples received: %u\n",
+ path, "sample_received", 1);
+ print_if("Nr. backtrace aborted: %u\n",
+ path, "backtrace_aborted", 0);
+ print_if("Nr. samples lost invalid pc: %u\n",
+ path, "sample_invalid_eip", 0);
+ }
+ closedir(dir);
+out:
+ fflush(stdout);
+}