Re: [PATCH 2/2] perf kvm: Disable live command if timerfd is not supported

2013-11-04 Thread David Ahern 

ditto

On 10/29/13, 10:43 AM, David Ahern wrote:

If the OS does not have timerfd support (e.g., older OS'es like RHEL5)
disable perf kvm stat live.

Signed-off-by: David Ahern 
Cc: Ingo Molnar 
Cc: Peter Zijlstra 
Cc: Namhyung Kim 
Cc: Jiri Olsa 
---
  tools/perf/builtin-kvm.c| 12 
  tools/perf/config/Makefile  |  7 +++
  tools/perf/config/feature-checks/Makefile   |  6 +-
  tools/perf/config/feature-checks/test-all.c |  5 +
  tools/perf/config/feature-checks/test-timerfd.c | 18 ++
  5 files changed, 47 insertions(+), 1 deletion(-)
  create mode 100644 tools/perf/config/feature-checks/test-timerfd.c

diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index cb05f39d8a77..cd9f92078aba 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -20,7 +20,9 @@
  #include "util/data.h"

  #include 
+#ifdef HAVE_TIMERFD_SUPPORT
  #include 
+#endif

  #include 
  #include 
@@ -337,6 +339,7 @@ static void init_kvm_event_record(struct perf_kvm_stat *kvm)
INIT_LIST_HEAD(>kvm_events_cache[i]);
  }

+#ifdef HAVE_TIMERFD_SUPPORT
  static void clear_events_cache_stats(struct list_head *kvm_events_cache)
  {
struct list_head *head;
@@ -358,6 +361,7 @@ static void clear_events_cache_stats(struct list_head 
*kvm_events_cache)
}
}
  }
+#endif

  static int kvm_events_hash_fn(u64 key)
  {
@@ -783,6 +787,7 @@ static void print_result(struct perf_kvm_stat *kvm)
pr_info("\nLost events: %" PRIu64 "\n\n", kvm->lost_events);
  }

+#ifdef HAVE_TIMERFD_SUPPORT
  static int process_lost_event(struct perf_tool *tool,
  union perf_event *event __maybe_unused,
  struct perf_sample *sample __maybe_unused,
@@ -793,6 +798,7 @@ static int process_lost_event(struct perf_tool *tool,
kvm->lost_events++;
return 0;
  }
+#endif

  static bool skip_sample(struct perf_kvm_stat *kvm,
struct perf_sample *sample)
@@ -872,6 +878,7 @@ static bool verify_vcpu(int vcpu)
return true;
  }

+#ifdef HAVE_TIMERFD_SUPPORT
  /* keeping the max events to a modest level to keep
   * the processing of samples per mmap smooth.
   */
@@ -1213,6 +1220,7 @@ static int kvm_live_open_events(struct perf_kvm_stat *kvm)
  out:
return rc;
  }
+#endif

  static int read_events(struct perf_kvm_stat *kvm)
  {
@@ -1379,6 +1387,7 @@ kvm_events_report(struct perf_kvm_stat *kvm, int argc, 
const char **argv)
return kvm_events_report_vcpu(kvm);
  }

+#ifdef HAVE_TIMERFD_SUPPORT
  static struct perf_evlist *kvm_live_event_list(void)
  {
struct perf_evlist *evlist;
@@ -1566,6 +1575,7 @@ out:

return err;
  }
+#endif

  static void print_kvm_stat_usage(void)
  {
@@ -1604,8 +1614,10 @@ static int kvm_cmd_stat(const char *file_name, int argc, 
const char **argv)
if (!strncmp(argv[1], "rep", 3))
return kvm_events_report(, argc - 1 , argv + 1);

+#ifdef HAVE_TIMERFD_SUPPORT
if (!strncmp(argv[1], "live", 4))
return kvm_events_live(, argc - 1 , argv + 1);
+#endif

  perf_stat:
return cmd_stat(argc, argv, NULL);
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index c82772207e6e..afe4945e3e84 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -395,6 +395,13 @@ else
endif
  endif

+$(call feature_check,timerfd)
+ifeq ($(feature-timerfd), 1)
+  CFLAGS += -DHAVE_TIMERFD_SUPPORT
+else
+  msg := $(warning No timerfd support. Disables 'perf kvm stat live');
+endif
+
  disable-python = $(eval $(disable-python_code))
  define disable-python_code
CFLAGS += -DNO_LIBPYTHON
diff --git a/tools/perf/config/feature-checks/Makefile 
b/tools/perf/config/feature-checks/Makefile
index 452b67cc4d7b..a4d4173c576e 100644
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -25,7 +25,8 @@ FILES=\
test-libunwind  \
test-on-exit\
test-stackprotector-all \
-   test-stackprotector
+   test-stackprotector \
+   test-timerfd

  CC := $(CC) -MD

@@ -136,6 +137,9 @@ test-on-exit:
  test-backtrace:
$(BUILD)

+test-timerfd:
+   $(BUILD)
+
  -include *.d

  ###
diff --git a/tools/perf/config/feature-checks/test-all.c 
b/tools/perf/config/feature-checks/test-all.c
index 50d431892a0c..59e7a705e146 100644
--- a/tools/perf/config/feature-checks/test-all.c
+++ b/tools/perf/config/feature-checks/test-all.c
@@ -81,6 +81,10 @@
  # include "test-libnuma.c"
  #undef main

+#define main main_test_timerfd
+# include "test-timerfd.c"
+#undef main
+
  int main(int argc, char *argv[])
  {
main_test_libpython();
@@ -101,6 +105,7 @@ int main(int argc, char *argv[])
main_test_on_exit();

Re: [PATCH 2/2] perf kvm: Disable live command if timerfd is not supported

2013-11-04 Thread David Ahern 

ditto

On 10/29/13, 10:43 AM, David Ahern wrote:

If the OS does not have timerfd support (e.g., older OS'es like RHEL5)
disable perf kvm stat live.

Signed-off-by: David Ahern dsah...@gmail.com
Cc: Ingo Molnar mi...@kernel.org
Cc: Peter Zijlstra a.p.zijls...@chello.nl
Cc: Namhyung Kim namhy...@kernel.org
Cc: Jiri Olsa jo...@redhat.com
---
  tools/perf/builtin-kvm.c| 12 
  tools/perf/config/Makefile  |  7 +++
  tools/perf/config/feature-checks/Makefile   |  6 +-
  tools/perf/config/feature-checks/test-all.c |  5 +
  tools/perf/config/feature-checks/test-timerfd.c | 18 ++
  5 files changed, 47 insertions(+), 1 deletion(-)
  create mode 100644 tools/perf/config/feature-checks/test-timerfd.c

diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index cb05f39d8a77..cd9f92078aba 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -20,7 +20,9 @@
  #include util/data.h

  #include sys/prctl.h
+#ifdef HAVE_TIMERFD_SUPPORT
  #include sys/timerfd.h
+#endif

  #include termios.h
  #include semaphore.h
@@ -337,6 +339,7 @@ static void init_kvm_event_record(struct perf_kvm_stat *kvm)
INIT_LIST_HEAD(kvm-kvm_events_cache[i]);
  }

+#ifdef HAVE_TIMERFD_SUPPORT
  static void clear_events_cache_stats(struct list_head *kvm_events_cache)
  {
struct list_head *head;
@@ -358,6 +361,7 @@ static void clear_events_cache_stats(struct list_head 
*kvm_events_cache)
}
}
  }
+#endif

  static int kvm_events_hash_fn(u64 key)
  {
@@ -783,6 +787,7 @@ static void print_result(struct perf_kvm_stat *kvm)
pr_info(\nLost events: % PRIu64 \n\n, kvm-lost_events);
  }

+#ifdef HAVE_TIMERFD_SUPPORT
  static int process_lost_event(struct perf_tool *tool,
  union perf_event *event __maybe_unused,
  struct perf_sample *sample __maybe_unused,
@@ -793,6 +798,7 @@ static int process_lost_event(struct perf_tool *tool,
kvm-lost_events++;
return 0;
  }
+#endif

  static bool skip_sample(struct perf_kvm_stat *kvm,
struct perf_sample *sample)
@@ -872,6 +878,7 @@ static bool verify_vcpu(int vcpu)
return true;
  }

+#ifdef HAVE_TIMERFD_SUPPORT
  /* keeping the max events to a modest level to keep
   * the processing of samples per mmap smooth.
   */
@@ -1213,6 +1220,7 @@ static int kvm_live_open_events(struct perf_kvm_stat *kvm)
  out:
return rc;
  }
+#endif

  static int read_events(struct perf_kvm_stat *kvm)
  {
@@ -1379,6 +1387,7 @@ kvm_events_report(struct perf_kvm_stat *kvm, int argc, 
const char **argv)
return kvm_events_report_vcpu(kvm);
  }

+#ifdef HAVE_TIMERFD_SUPPORT
  static struct perf_evlist *kvm_live_event_list(void)
  {
struct perf_evlist *evlist;
@@ -1566,6 +1575,7 @@ out:

return err;
  }
+#endif

  static void print_kvm_stat_usage(void)
  {
@@ -1604,8 +1614,10 @@ static int kvm_cmd_stat(const char *file_name, int argc, 
const char **argv)
if (!strncmp(argv[1], rep, 3))
return kvm_events_report(kvm, argc - 1 , argv + 1);

+#ifdef HAVE_TIMERFD_SUPPORT
if (!strncmp(argv[1], live, 4))
return kvm_events_live(kvm, argc - 1 , argv + 1);
+#endif

  perf_stat:
return cmd_stat(argc, argv, NULL);
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index c82772207e6e..afe4945e3e84 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -395,6 +395,13 @@ else
endif
  endif

+$(call feature_check,timerfd)
+ifeq ($(feature-timerfd), 1)
+  CFLAGS += -DHAVE_TIMERFD_SUPPORT
+else
+  msg := $(warning No timerfd support. Disables 'perf kvm stat live');
+endif
+
  disable-python = $(eval $(disable-python_code))
  define disable-python_code
CFLAGS += -DNO_LIBPYTHON
diff --git a/tools/perf/config/feature-checks/Makefile 
b/tools/perf/config/feature-checks/Makefile
index 452b67cc4d7b..a4d4173c576e 100644
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -25,7 +25,8 @@ FILES=\
test-libunwind  \
test-on-exit\
test-stackprotector-all \
-   test-stackprotector
+   test-stackprotector \
+   test-timerfd

  CC := $(CC) -MD

@@ -136,6 +137,9 @@ test-on-exit:
  test-backtrace:
$(BUILD)

+test-timerfd:
+   $(BUILD)
+
  -include *.d

  ###
diff --git a/tools/perf/config/feature-checks/test-all.c 
b/tools/perf/config/feature-checks/test-all.c
index 50d431892a0c..59e7a705e146 100644
--- a/tools/perf/config/feature-checks/test-all.c
+++ b/tools/perf/config/feature-checks/test-all.c
@@ -81,6 +81,10 @@
  # include test-libnuma.c
  #undef main

+#define main main_test_timerfd
+# include test-timerfd.c
+#undef main
+
  int main(int argc, char

Re: [PATCH 2/2] perf kvm: Disable live command if timerfd is not supported

2013-10-29 Thread Jiri Olsa 
On Tue, Oct 29, 2013 at 10:43:16AM -0600, David Ahern wrote:
> If the OS does not have timerfd support (e.g., older OS'es like RHEL5)
> disable perf kvm stat live.
> 
> Signed-off-by: David Ahern 
> Cc: Ingo Molnar 
> Cc: Peter Zijlstra 
> Cc: Namhyung Kim 
> Cc: Jiri Olsa 

looks ok,
Reviewed-by: Jiri Olsa 

jirka
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[PATCH 2/2] perf kvm: Disable live command if timerfd is not supported

2013-10-29 Thread David Ahern 
If the OS does not have timerfd support (e.g., older OS'es like RHEL5)
disable perf kvm stat live.

Signed-off-by: David Ahern 
Cc: Ingo Molnar 
Cc: Peter Zijlstra 
Cc: Namhyung Kim 
Cc: Jiri Olsa 
---
 tools/perf/builtin-kvm.c| 12 
 tools/perf/config/Makefile  |  7 +++
 tools/perf/config/feature-checks/Makefile   |  6 +-
 tools/perf/config/feature-checks/test-all.c |  5 +
 tools/perf/config/feature-checks/test-timerfd.c | 18 ++
 5 files changed, 47 insertions(+), 1 deletion(-)
 create mode 100644 tools/perf/config/feature-checks/test-timerfd.c

diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index cb05f39d8a77..cd9f92078aba 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -20,7 +20,9 @@
 #include "util/data.h"
 
 #include 
+#ifdef HAVE_TIMERFD_SUPPORT
 #include 
+#endif
 
 #include 
 #include 
@@ -337,6 +339,7 @@ static void init_kvm_event_record(struct perf_kvm_stat *kvm)
INIT_LIST_HEAD(>kvm_events_cache[i]);
 }
 
+#ifdef HAVE_TIMERFD_SUPPORT
 static void clear_events_cache_stats(struct list_head *kvm_events_cache)
 {
struct list_head *head;
@@ -358,6 +361,7 @@ static void clear_events_cache_stats(struct list_head 
*kvm_events_cache)
}
}
 }
+#endif
 
 static int kvm_events_hash_fn(u64 key)
 {
@@ -783,6 +787,7 @@ static void print_result(struct perf_kvm_stat *kvm)
pr_info("\nLost events: %" PRIu64 "\n\n", kvm->lost_events);
 }
 
+#ifdef HAVE_TIMERFD_SUPPORT
 static int process_lost_event(struct perf_tool *tool,
  union perf_event *event __maybe_unused,
  struct perf_sample *sample __maybe_unused,
@@ -793,6 +798,7 @@ static int process_lost_event(struct perf_tool *tool,
kvm->lost_events++;
return 0;
 }
+#endif
 
 static bool skip_sample(struct perf_kvm_stat *kvm,
struct perf_sample *sample)
@@ -872,6 +878,7 @@ static bool verify_vcpu(int vcpu)
return true;
 }
 
+#ifdef HAVE_TIMERFD_SUPPORT
 /* keeping the max events to a modest level to keep
  * the processing of samples per mmap smooth.
  */
@@ -1213,6 +1220,7 @@ static int kvm_live_open_events(struct perf_kvm_stat *kvm)
 out:
return rc;
 }
+#endif
 
 static int read_events(struct perf_kvm_stat *kvm)
 {
@@ -1379,6 +1387,7 @@ kvm_events_report(struct perf_kvm_stat *kvm, int argc, 
const char **argv)
return kvm_events_report_vcpu(kvm);
 }
 
+#ifdef HAVE_TIMERFD_SUPPORT
 static struct perf_evlist *kvm_live_event_list(void)
 {
struct perf_evlist *evlist;
@@ -1566,6 +1575,7 @@ out:
 
return err;
 }
+#endif
 
 static void print_kvm_stat_usage(void)
 {
@@ -1604,8 +1614,10 @@ static int kvm_cmd_stat(const char *file_name, int argc, 
const char **argv)
if (!strncmp(argv[1], "rep", 3))
return kvm_events_report(, argc - 1 , argv + 1);
 
+#ifdef HAVE_TIMERFD_SUPPORT
if (!strncmp(argv[1], "live", 4))
return kvm_events_live(, argc - 1 , argv + 1);
+#endif
 
 perf_stat:
return cmd_stat(argc, argv, NULL);
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index c82772207e6e..afe4945e3e84 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -395,6 +395,13 @@ else
   endif
 endif
 
+$(call feature_check,timerfd)
+ifeq ($(feature-timerfd), 1)
+  CFLAGS += -DHAVE_TIMERFD_SUPPORT
+else
+  msg := $(warning No timerfd support. Disables 'perf kvm stat live');
+endif
+
 disable-python = $(eval $(disable-python_code))
 define disable-python_code
   CFLAGS += -DNO_LIBPYTHON
diff --git a/tools/perf/config/feature-checks/Makefile 
b/tools/perf/config/feature-checks/Makefile
index 452b67cc4d7b..a4d4173c576e 100644
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -25,7 +25,8 @@ FILES=\
test-libunwind  \
test-on-exit\
test-stackprotector-all \
-   test-stackprotector
+   test-stackprotector \
+   test-timerfd
 
 CC := $(CC) -MD
 
@@ -136,6 +137,9 @@ test-on-exit:
 test-backtrace:
$(BUILD)
 
+test-timerfd:
+   $(BUILD)
+
 -include *.d
 
 ###
diff --git a/tools/perf/config/feature-checks/test-all.c 
b/tools/perf/config/feature-checks/test-all.c
index 50d431892a0c..59e7a705e146 100644
--- a/tools/perf/config/feature-checks/test-all.c
+++ b/tools/perf/config/feature-checks/test-all.c
@@ -81,6 +81,10 @@
 # include "test-libnuma.c"
 #undef main
 
+#define main main_test_timerfd
+# include "test-timerfd.c"
+#undef main
+
 int main(int argc, char *argv[])
 {
main_test_libpython();
@@ -101,6 +105,7 @@ int main(int argc, char *argv[])
main_test_on_exit();
main_test_backtrace();
main_test_libnuma();
+

[PATCH 2/2] perf kvm: Disable live command if timerfd is not supported

2013-10-29 Thread David Ahern 
If the OS does not have timerfd support (e.g., older OS'es like RHEL5)
disable perf kvm stat live.

Signed-off-by: David Ahern dsah...@gmail.com
Cc: Ingo Molnar mi...@kernel.org
Cc: Peter Zijlstra a.p.zijls...@chello.nl
Cc: Namhyung Kim namhy...@kernel.org
Cc: Jiri Olsa jo...@redhat.com
---
 tools/perf/builtin-kvm.c| 12 
 tools/perf/config/Makefile  |  7 +++
 tools/perf/config/feature-checks/Makefile   |  6 +-
 tools/perf/config/feature-checks/test-all.c |  5 +
 tools/perf/config/feature-checks/test-timerfd.c | 18 ++
 5 files changed, 47 insertions(+), 1 deletion(-)
 create mode 100644 tools/perf/config/feature-checks/test-timerfd.c

diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index cb05f39d8a77..cd9f92078aba 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -20,7 +20,9 @@
 #include util/data.h
 
 #include sys/prctl.h
+#ifdef HAVE_TIMERFD_SUPPORT
 #include sys/timerfd.h
+#endif
 
 #include termios.h
 #include semaphore.h
@@ -337,6 +339,7 @@ static void init_kvm_event_record(struct perf_kvm_stat *kvm)
INIT_LIST_HEAD(kvm-kvm_events_cache[i]);
 }
 
+#ifdef HAVE_TIMERFD_SUPPORT
 static void clear_events_cache_stats(struct list_head *kvm_events_cache)
 {
struct list_head *head;
@@ -358,6 +361,7 @@ static void clear_events_cache_stats(struct list_head 
*kvm_events_cache)
}
}
 }
+#endif
 
 static int kvm_events_hash_fn(u64 key)
 {
@@ -783,6 +787,7 @@ static void print_result(struct perf_kvm_stat *kvm)
pr_info(\nLost events: % PRIu64 \n\n, kvm-lost_events);
 }
 
+#ifdef HAVE_TIMERFD_SUPPORT
 static int process_lost_event(struct perf_tool *tool,
  union perf_event *event __maybe_unused,
  struct perf_sample *sample __maybe_unused,
@@ -793,6 +798,7 @@ static int process_lost_event(struct perf_tool *tool,
kvm-lost_events++;
return 0;
 }
+#endif
 
 static bool skip_sample(struct perf_kvm_stat *kvm,
struct perf_sample *sample)
@@ -872,6 +878,7 @@ static bool verify_vcpu(int vcpu)
return true;
 }
 
+#ifdef HAVE_TIMERFD_SUPPORT
 /* keeping the max events to a modest level to keep
  * the processing of samples per mmap smooth.
  */
@@ -1213,6 +1220,7 @@ static int kvm_live_open_events(struct perf_kvm_stat *kvm)
 out:
return rc;
 }
+#endif
 
 static int read_events(struct perf_kvm_stat *kvm)
 {
@@ -1379,6 +1387,7 @@ kvm_events_report(struct perf_kvm_stat *kvm, int argc, 
const char **argv)
return kvm_events_report_vcpu(kvm);
 }
 
+#ifdef HAVE_TIMERFD_SUPPORT
 static struct perf_evlist *kvm_live_event_list(void)
 {
struct perf_evlist *evlist;
@@ -1566,6 +1575,7 @@ out:
 
return err;
 }
+#endif
 
 static void print_kvm_stat_usage(void)
 {
@@ -1604,8 +1614,10 @@ static int kvm_cmd_stat(const char *file_name, int argc, 
const char **argv)
if (!strncmp(argv[1], rep, 3))
return kvm_events_report(kvm, argc - 1 , argv + 1);
 
+#ifdef HAVE_TIMERFD_SUPPORT
if (!strncmp(argv[1], live, 4))
return kvm_events_live(kvm, argc - 1 , argv + 1);
+#endif
 
 perf_stat:
return cmd_stat(argc, argv, NULL);
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index c82772207e6e..afe4945e3e84 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -395,6 +395,13 @@ else
   endif
 endif
 
+$(call feature_check,timerfd)
+ifeq ($(feature-timerfd), 1)
+  CFLAGS += -DHAVE_TIMERFD_SUPPORT
+else
+  msg := $(warning No timerfd support. Disables 'perf kvm stat live');
+endif
+
 disable-python = $(eval $(disable-python_code))
 define disable-python_code
   CFLAGS += -DNO_LIBPYTHON
diff --git a/tools/perf/config/feature-checks/Makefile 
b/tools/perf/config/feature-checks/Makefile
index 452b67cc4d7b..a4d4173c576e 100644
--- a/tools/perf/config/feature-checks/Makefile
+++ b/tools/perf/config/feature-checks/Makefile
@@ -25,7 +25,8 @@ FILES=\
test-libunwind  \
test-on-exit\
test-stackprotector-all \
-   test-stackprotector
+   test-stackprotector \
+   test-timerfd
 
 CC := $(CC) -MD
 
@@ -136,6 +137,9 @@ test-on-exit:
 test-backtrace:
$(BUILD)
 
+test-timerfd:
+   $(BUILD)
+
 -include *.d
 
 ###
diff --git a/tools/perf/config/feature-checks/test-all.c 
b/tools/perf/config/feature-checks/test-all.c
index 50d431892a0c..59e7a705e146 100644
--- a/tools/perf/config/feature-checks/test-all.c
+++ b/tools/perf/config/feature-checks/test-all.c
@@ -81,6 +81,10 @@
 # include test-libnuma.c
 #undef main
 
+#define main main_test_timerfd
+# include test-timerfd.c
+#undef main
+
 int main(int argc, char *argv[])
 {
main_test_libpython();
@@ -101,6 +105,7 @@ int main(int argc,

Re: [PATCH 2/2] perf kvm: Disable live command if timerfd is not supported

2013-10-29 Thread Jiri Olsa 
On Tue, Oct 29, 2013 at 10:43:16AM -0600, David Ahern wrote:
 If the OS does not have timerfd support (e.g., older OS'es like RHEL5)
 disable perf kvm stat live.
 
 Signed-off-by: David Ahern dsah...@gmail.com
 Cc: Ingo Molnar mi...@kernel.org
 Cc: Peter Zijlstra a.p.zijls...@chello.nl
 Cc: Namhyung Kim namhy...@kernel.org
 Cc: Jiri Olsa jo...@redhat.com

looks ok,
Reviewed-by: Jiri Olsa jo...@redhat.com

jirka
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