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

Pull perf tooling updates from Thomas Gleixner:

 - handle uretprobe placement proper on little endian PPC64

 - fix buffer handling in libtraceevent

 - add a missing pointer derefence in perf probe

 - fix the build of host tools in cross builds

 - fix Intel PT timestamp handling

 - synchronize memcpy, cpufeatures and bpf headers with the kernel headers

 - support for vendor supplied JSON files describing PMU events

 - a new set of tool tips

 - initial work for clang/llvm support

 - address some style issues found by cppcheck

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (35 commits)
  tools build: Add feature detection for g++
  tools build: Support compiling C++ source file
  perf top/report: Add tips about a list option
  perf report/top: Add a tip about system-wide collection from all CPUs
  perf report/top: Add a tip about source line numbers with overhead
  tools: Synchronize tools/include/uapi/linux/bpf.h
  tools: Synchronize tools/arch/x86/include/asm/cpufeatures.h
  perf bench mem: Sync memcpy assembly sources with the kernel
  perf jevents: Fix Intel JSON fixed counter conversions
  tools lib traceevent: Fix kbuffer_read_at_offset()
  perf intel-pt: Fix MTC timestamp calculation for large MTC periods
  perf intel-pt: Fix estimated timestamps for cycle-accurate mode
  perf uretprobe ppc64le: Fix probe location
  perf pmu-events: Add Skylake frontend MSR support
  perf pmu-events: Fix fixed counters on Intel
  perf tools: Make alias matching case-insensitive
  perf tools: Allow period= in perf stat CPU event descriptions.
  perf tools: Add README for info on parsing JSON/map files
  perf list jevents: Add support for event list topics
  perf list: Support long jevents descriptions
  ...

1 files changed, 3 insertions, 6 deletions

diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 8b10a55410a2..f5af87f66663 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -14,13 +14,12 @@
 
 int thread__init_map_groups(struct thread *thread, struct machine *machine)
 {
-	struct thread *leader;
 	pid_t pid = thread->pid_;
 
 	if (pid == thread->tid || pid == -1) {
 		thread->mg = map_groups__new(machine);
 	} else {
-		leader = __machine__findnew_thread(machine, pid, pid);
+		struct thread *leader = __machine__findnew_thread(machine, pid, pid);
 		if (leader) {
 			thread->mg = map_groups__get(leader->mg);
 			thread__put(leader);
@@ -130,11 +129,10 @@ int __thread__set_comm(struct thread *thread, const char *str, u64 timestamp,
 		       bool exec)
 {
 	struct comm *new, *curr = thread__comm(thread);
-	int err;
 
 	/* Override the default :tid entry */
 	if (!thread->comm_set) {
-		err = comm__override(curr, str, timestamp, exec);
+		int err = comm__override(curr, str, timestamp, exec);
 		if (err)
 			return err;
 	} else {
@@ -270,10 +268,9 @@ static int thread__clone_map_groups(struct thread *thread,
 
 int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
 {
-	int err;
-
 	if (parent->comm_set) {
 		const char *comm = thread__comm_str(parent);
+		int err;
 		if (!comm)
 			return -ENOMEM;
 		err = thread__set_comm(thread, comm, timestamp);