zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/tools/perf/util/top.c b/ap/os/linux/linux-3.4.x/tools/perf/util/top.c
new file mode 100644
index 0000000..09fe579
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/tools/perf/util/top.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
+ *
+ * Refactored from builtin-top.c, see that files for further copyright notes.
+ *
+ * Released under the GPL v2. (and only v2, not any later version)
+ */
+
+#include "cpumap.h"
+#include "event.h"
+#include "evlist.h"
+#include "evsel.h"
+#include "parse-events.h"
+#include "symbol.h"
+#include "top.h"
+#include <inttypes.h>
+
+#define SNPRINTF(buf, size, fmt, args...) \
+({ \
+ size_t r = snprintf(buf, size, fmt, ## args); \
+ r > size ? size : r; \
+})
+
+size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
+{
+ float samples_per_sec = top->samples / top->delay_secs;
+ float ksamples_per_sec = top->kernel_samples / top->delay_secs;
+ float esamples_percent = (100.0 * top->exact_samples) / top->samples;
+ size_t ret = 0;
+
+ if (!perf_guest) {
+ ret = SNPRINTF(bf, size,
+ " PerfTop:%8.0f irqs/sec kernel:%4.1f%%"
+ " exact: %4.1f%% [", samples_per_sec,
+ 100.0 - (100.0 * ((samples_per_sec - ksamples_per_sec) /
+ samples_per_sec)),
+ esamples_percent);
+ } else {
+ float us_samples_per_sec = top->us_samples / top->delay_secs;
+ float guest_kernel_samples_per_sec = top->guest_kernel_samples / top->delay_secs;
+ float guest_us_samples_per_sec = top->guest_us_samples / top->delay_secs;
+
+ ret = SNPRINTF(bf, size,
+ " PerfTop:%8.0f irqs/sec kernel:%4.1f%% us:%4.1f%%"
+ " guest kernel:%4.1f%% guest us:%4.1f%%"
+ " exact: %4.1f%% [", samples_per_sec,
+ 100.0 - (100.0 * ((samples_per_sec - ksamples_per_sec) /
+ samples_per_sec)),
+ 100.0 - (100.0 * ((samples_per_sec - us_samples_per_sec) /
+ samples_per_sec)),
+ 100.0 - (100.0 * ((samples_per_sec -
+ guest_kernel_samples_per_sec) /
+ samples_per_sec)),
+ 100.0 - (100.0 * ((samples_per_sec -
+ guest_us_samples_per_sec) /
+ samples_per_sec)),
+ esamples_percent);
+ }
+
+ if (top->evlist->nr_entries == 1) {
+ struct perf_evsel *first;
+ first = list_entry(top->evlist->entries.next, struct perf_evsel, node);
+ ret += SNPRINTF(bf + ret, size - ret, "%" PRIu64 "%s ",
+ (uint64_t)first->attr.sample_period,
+ top->freq ? "Hz" : "");
+ }
+
+ ret += SNPRINTF(bf + ret, size - ret, "%s", event_name(top->sym_evsel));
+
+ ret += SNPRINTF(bf + ret, size - ret, "], ");
+
+ if (top->target_pid)
+ ret += SNPRINTF(bf + ret, size - ret, " (target_pid: %s",
+ top->target_pid);
+ else if (top->target_tid)
+ ret += SNPRINTF(bf + ret, size - ret, " (target_tid: %s",
+ top->target_tid);
+ else if (top->uid_str != NULL)
+ ret += SNPRINTF(bf + ret, size - ret, " (uid: %s",
+ top->uid_str);
+ else
+ ret += SNPRINTF(bf + ret, size - ret, " (all");
+
+ if (top->cpu_list)
+ ret += SNPRINTF(bf + ret, size - ret, ", CPU%s: %s)",
+ top->evlist->cpus->nr > 1 ? "s" : "", top->cpu_list);
+ else {
+ if (top->target_tid)
+ ret += SNPRINTF(bf + ret, size - ret, ")");
+ else
+ ret += SNPRINTF(bf + ret, size - ret, ", %d CPU%s)",
+ top->evlist->cpus->nr,
+ top->evlist->cpus->nr > 1 ? "s" : "");
+ }
+
+ return ret;
+}
+
+void perf_top__reset_sample_counters(struct perf_top *top)
+{
+ top->samples = top->us_samples = top->kernel_samples =
+ top->exact_samples = top->guest_kernel_samples =
+ top->guest_us_samples = 0;
+}