perf: 'perf kvm' tool for monitoring guest performance from host
Here is the patch of userspace perf tool.
Signed-off-by: Zhang Yanmin <yanmin_zhang@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
new file mode 100644
index 0000000..a4c7cae
--- /dev/null
+++ b/tools/perf/builtin-kvm.c
@@ -0,0 +1,144 @@
+#include "builtin.h"
+#include "perf.h"
+
+#include "util/util.h"
+#include "util/cache.h"
+#include "util/symbol.h"
+#include "util/thread.h"
+#include "util/header.h"
+#include "util/session.h"
+
+#include "util/parse-options.h"
+#include "util/trace-event.h"
+
+#include "util/debug.h"
+
+#include <sys/prctl.h>
+
+#include <semaphore.h>
+#include <pthread.h>
+#include <math.h>
+
+static char *file_name;
+static char name_buffer[256];
+
+int perf_host = 1;
+int perf_guest;
+
+static const char * const kvm_usage[] = {
+ "perf kvm [<options>] {top|record|report|diff|buildid-list}",
+ NULL
+};
+
+static const struct option kvm_options[] = {
+ OPT_STRING('i', "input", &file_name, "file",
+ "Input file name"),
+ OPT_STRING('o', "output", &file_name, "file",
+ "Output file name"),
+ OPT_BOOLEAN(0, "guest", &perf_guest,
+ "Collect guest os data"),
+ OPT_BOOLEAN(0, "host", &perf_host,
+ "Collect guest os data"),
+ OPT_STRING(0, "guestmount", &symbol_conf.guestmount, "directory",
+ "guest mount directory under which every guest os"
+ " instance has a subdir"),
+ OPT_STRING(0, "guestvmlinux", &symbol_conf.default_guest_vmlinux_name,
+ "file", "file saving guest os vmlinux"),
+ OPT_STRING(0, "guestkallsyms", &symbol_conf.default_guest_kallsyms,
+ "file", "file saving guest os /proc/kallsyms"),
+ OPT_STRING(0, "guestmodules", &symbol_conf.default_guest_modules,
+ "file", "file saving guest os /proc/modules"),
+ OPT_END()
+};
+
+static int __cmd_record(int argc, const char **argv)
+{
+ int rec_argc, i = 0, j;
+ const char **rec_argv;
+
+ rec_argc = argc + 2;
+ rec_argv = calloc(rec_argc + 1, sizeof(char *));
+ rec_argv[i++] = strdup("record");
+ rec_argv[i++] = strdup("-o");
+ rec_argv[i++] = strdup(file_name);
+ for (j = 1; j < argc; j++, i++)
+ rec_argv[i] = argv[j];
+
+ BUG_ON(i != rec_argc);
+
+ return cmd_record(i, rec_argv, NULL);
+}
+
+static int __cmd_report(int argc, const char **argv)
+{
+ int rec_argc, i = 0, j;
+ const char **rec_argv;
+
+ rec_argc = argc + 2;
+ rec_argv = calloc(rec_argc + 1, sizeof(char *));
+ rec_argv[i++] = strdup("report");
+ rec_argv[i++] = strdup("-i");
+ rec_argv[i++] = strdup(file_name);
+ for (j = 1; j < argc; j++, i++)
+ rec_argv[i] = argv[j];
+
+ BUG_ON(i != rec_argc);
+
+ return cmd_report(i, rec_argv, NULL);
+}
+
+static int __cmd_buildid_list(int argc, const char **argv)
+{
+ int rec_argc, i = 0, j;
+ const char **rec_argv;
+
+ rec_argc = argc + 2;
+ rec_argv = calloc(rec_argc + 1, sizeof(char *));
+ rec_argv[i++] = strdup("buildid-list");
+ rec_argv[i++] = strdup("-i");
+ rec_argv[i++] = strdup(file_name);
+ for (j = 1; j < argc; j++, i++)
+ rec_argv[i] = argv[j];
+
+ BUG_ON(i != rec_argc);
+
+ return cmd_buildid_list(i, rec_argv, NULL);
+}
+
+int cmd_kvm(int argc, const char **argv, const char *prefix __used)
+{
+ perf_host = perf_guest = 0;
+
+ argc = parse_options(argc, argv, kvm_options, kvm_usage,
+ PARSE_OPT_STOP_AT_NON_OPTION);
+ if (!argc)
+ usage_with_options(kvm_usage, kvm_options);
+
+ if (!perf_host)
+ perf_guest = 1;
+
+ if (!file_name) {
+ if (perf_host && !perf_guest)
+ sprintf(name_buffer, "perf.data.host");
+ else if (!perf_host && perf_guest)
+ sprintf(name_buffer, "perf.data.guest");
+ else
+ sprintf(name_buffer, "perf.data.kvm");
+ file_name = name_buffer;
+ }
+
+ if (!strncmp(argv[0], "rec", 3))
+ return __cmd_record(argc, argv);
+ else if (!strncmp(argv[0], "rep", 3))
+ return __cmd_report(argc, argv);
+ else if (!strncmp(argv[0], "diff", 4))
+ return cmd_diff(argc, argv, NULL);
+ else if (!strncmp(argv[0], "top", 3))
+ return cmd_top(argc, argv, NULL);
+ else if (!strncmp(argv[0], "buildid-list", 12))
+ return __cmd_buildid_list(argc, argv);
+ else
+ usage_with_options(kvm_usage, kvm_options);
+
+ return 0;
+}