Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf updates from Ingo Molnar:
 "Kernel side changes:

   - Improved kbprobes robustness

   - Intel PEBS support for PT hardware tracing

   - Other Intel PT improvements: high order pages memory footprint
     reduction and various related cleanups

   - Misc cleanups

  The perf tooling side has been very busy in this cycle, with over 300
  commits. This is an incomplete high-level summary of the many
  improvements done by over 30 developers:

   - Lots of updates to the following tools:

      'perf c2c'
      'perf config'
      'perf record'
      'perf report'
      'perf script'
      'perf test'
      'perf top'
      'perf trace'

   - Updates to libperf and libtraceevent, and a consolidation of the
     proliferation of x86 instruction decoder libraries.

   - Vendor event updates for Intel and PowerPC CPUs,

   - Updates to hardware tracing tooling for ARM and Intel CPUs,

   - ... and lots of other changes and cleanups - see the shortlog and
     Git log for details"

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (322 commits)
  kprobes: Prohibit probing on BUG() and WARN() address
  perf/x86: Make more stuff static
  x86, perf: Fix the dependency of the x86 insn decoder selftest
  objtool: Ignore intentional differences for the x86 insn decoder
  objtool: Update sync-check.sh from perf's check-headers.sh
  perf build: Ignore intentional differences for the x86 insn decoder
  perf intel-pt: Use shared x86 insn decoder
  perf intel-pt: Remove inat.c from build dependency list
  perf: Update .gitignore file
  objtool: Move x86 insn decoder to a common location
  perf metricgroup: Support multiple events for metricgroup
  perf metricgroup: Scale the metric result
  perf pmu: Change convert_scale from static to global
  perf symbols: Move mem_info and branch_info out of symbol.h
  perf auxtrace: Uninline functions that touch perf_session
  perf tools: Remove needless evlist.h include directives
  perf tools: Remove needless evlist.h include directives
  perf tools: Remove needless thread_map.h include directives
  perf tools: Remove needless thread.h include directives
  perf tools: Remove needless map.h include directives
  ...

1 files changed, 22 insertions, 13 deletions

diff --git a/tools/perf/builtin-ftrace.c b/tools/perf/builtin-ftrace.c
index 019312810405..d5adc417a4ca 100644
--- a/tools/perf/builtin-ftrace.c
+++ b/tools/perf/builtin-ftrace.c
@@ -6,28 +6,31 @@
  */
 
 #include "builtin.h"
-#include "perf.h"
 
 #include <errno.h>
 #include <unistd.h>
 #include <signal.h>
+#include <stdlib.h>
 #include <fcntl.h>
 #include <poll.h>
+#include <linux/capability.h>
+#include <linux/string.h>
 
 #include "debug.h"
+#include <subcmd/pager.h>
 #include <subcmd/parse-options.h>
 #include <api/fs/tracing_path.h>
 #include "evlist.h"
 #include "target.h"
 #include "cpumap.h"
 #include "thread_map.h"
+#include "util/cap.h"
 #include "util/config.h"
 
-
 #define DEFAULT_TRACER  "function_graph"
 
 struct perf_ftrace {
-	struct perf_evlist	*evlist;
+	struct evlist		*evlist;
 	struct target		target;
 	const char		*tracer;
 	struct list_head	filters;
@@ -156,16 +159,16 @@ static int set_tracing_pid(struct perf_ftrace *ftrace)
 	if (target__has_cpu(&ftrace->target))
 		return 0;
 
-	for (i = 0; i < thread_map__nr(ftrace->evlist->threads); i++) {
+	for (i = 0; i < perf_thread_map__nr(ftrace->evlist->core.threads); i++) {
 		scnprintf(buf, sizeof(buf), "%d",
-			  ftrace->evlist->threads->map[i]);
+			  ftrace->evlist->core.threads->map[i]);
 		if (append_tracing_file("set_ftrace_pid", buf) < 0)
 			return -1;
 	}
 	return 0;
 }
 
-static int set_tracing_cpumask(struct cpu_map *cpumap)
+static int set_tracing_cpumask(struct perf_cpu_map *cpumap)
 {
 	char *cpumask;
 	size_t mask_size;
@@ -192,7 +195,7 @@ static int set_tracing_cpumask(struct cpu_map *cpumap)
 
 static int set_tracing_cpu(struct perf_ftrace *ftrace)
 {
-	struct cpu_map *cpumap = ftrace->evlist->cpus;
+	struct perf_cpu_map *cpumap = ftrace->evlist->core.cpus;
 
 	if (!target__has_cpu(&ftrace->target))
 		return 0;
@@ -202,11 +205,11 @@ static int set_tracing_cpu(struct perf_ftrace *ftrace)
 
 static int reset_tracing_cpu(void)
 {
-	struct cpu_map *cpumap = cpu_map__new(NULL);
+	struct perf_cpu_map *cpumap = perf_cpu_map__new(NULL);
 	int ret;
 
 	ret = set_tracing_cpumask(cpumap);
-	cpu_map__put(cpumap);
+	perf_cpu_map__put(cpumap);
 	return ret;
 }
 
@@ -281,8 +284,14 @@ static int __cmd_ftrace(struct perf_ftrace *ftrace, int argc, const char **argv)
 		.events = POLLIN,
 	};
 
-	if (geteuid() != 0) {
-		pr_err("ftrace only works for root!\n");
+	if (!perf_cap__capable(CAP_SYS_ADMIN)) {
+		pr_err("ftrace only works for %s!\n",
+#ifdef HAVE_LIBCAP_SUPPORT
+		"users with the SYS_ADMIN capability"
+#else
+		"root"
+#endif
+		);
 		return -1;
 	}
 
@@ -495,7 +504,7 @@ int cmd_ftrace(int argc, const char **argv)
 		goto out_delete_filters;
 	}
 
-	ftrace.evlist = perf_evlist__new();
+	ftrace.evlist = evlist__new();
 	if (ftrace.evlist == NULL) {
 		ret = -ENOMEM;
 		goto out_delete_filters;
@@ -508,7 +517,7 @@ int cmd_ftrace(int argc, const char **argv)
 	ret = __cmd_ftrace(&ftrace, argc, argv);
 
 out_delete_evlist:
-	perf_evlist__delete(ftrace.evlist);
+	evlist__delete(ftrace.evlist);
 
 out_delete_filters:
 	delete_filter_func(&ftrace.filters);