Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

  - Accept a zero --itrace period, meaning "as often as possible".  In the case
    of Intel PT that is the same as a period of 1 and a unit of 'instructions'
    (i.e.  --itrace=i1i). (Adrian Hunter)

  - Harmonize itrace's synthesized callchains with the existing --max-stack
    tool option. (Adrian Hunter)

  - Allow time to be displayed in nanoseconds in 'perf script'. (Adrian Hunter)

  - Fix potential infinite loop when handling Intel PT timestamps. (Adrian Hunter)

  - Slighly improve Intel PT debug logging. (Adrian Hunter)

  - Warn when AUX data has been lost, just like when processing PERF_RECORD_LOST.
    (Adrian Hunter)

  - Further document export-to-postgresql.py script. (Adrian Hunter)

  - Add option to synthesize branch stack from auxtrace data. (Adrian Hunter)

  - Use equivalent logic to avoid using dso->kernel. (Arnaldo Carvalho de Melo)

  - Show proper error messages when parsing bad terms for hw/sw events. (He Kuang)

  - Tracepoint event parsing improvements. (He Kuang)

  - Store tracing mountpoint for better error message. (Jiri Olsa)

  - Add fixdep to tools/build, bringing it closer to the kernel counterpart, from
    where it is being lifted. (Jiri Olsa)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

4 files changed, 15 insertions, 16 deletions

diff --git a/tools/lib/api/Makefile b/tools/lib/api/Makefile
index fe1b02c2c95b..d85904dc9b38 100644
--- a/tools/lib/api/Makefile
+++ b/tools/lib/api/Makefile
@@ -21,12 +21,14 @@ CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
 
 RM = rm -f
 
-build  := -f $(srctree)/tools/build/Makefile.build dir=. obj
 API_IN := $(OUTPUT)libapi-in.o
 
+all:
+
 export srctree OUTPUT CC LD CFLAGS V
+include $(srctree)/tools/build/Makefile.include
 
-all: $(LIBFILE)
+all: fixdep $(LIBFILE)
 
 $(API_IN): FORCE
         @$(MAKE) $(build)=libapi
diff --git a/tools/lib/api/fs/tracing_path.c b/tools/lib/api/fs/tracing_path.c
index 38aca2dd1946..0406a7d5c891 100644
--- a/tools/lib/api/fs/tracing_path.c
+++ b/tools/lib/api/fs/tracing_path.c
@@ -12,12 +12,14 @@
 #include "tracing_path.h"
 
 
+char tracing_mnt[PATH_MAX + 1]         = "/sys/kernel/debug";
 char tracing_path[PATH_MAX + 1]        = "/sys/kernel/debug/tracing";
 char tracing_events_path[PATH_MAX + 1] = "/sys/kernel/debug/tracing/events";
 
 
 static void __tracing_path_set(const char *tracing, const char *mountpoint)
 {
+        snprintf(tracing_mnt, sizeof(tracing_mnt), "%s", mountpoint);
         snprintf(tracing_path, sizeof(tracing_path), "%s/%s",
                  mountpoint, tracing);
         snprintf(tracing_events_path, sizeof(tracing_events_path), "%s/%s%s",
@@ -109,19 +111,10 @@ static int strerror_open(int err, char *buf, size_t size, const char *filename)
                          "Hint:\tTry 'sudo mount -t debugfs nodev /sys/kernel/debug'");
                 break;
         case EACCES: {
-                const char *mountpoint = debugfs__mountpoint();
-
-                if (!access(mountpoint, R_OK) && strncmp(filename, "tracing/", 8) == 0) {
-                        const char *tracefs_mntpoint = tracefs__mountpoint();
-
-                        if (tracefs_mntpoint)
-                                mountpoint = tracefs__mountpoint();
-                }
-
                 snprintf(buf, size,
                          "Error:\tNo permissions to read %s/%s\n"
                          "Hint:\tTry 'sudo mount -o remount,mode=755 %s'\n",
-                         tracing_events_path, filename, mountpoint);
+                         tracing_events_path, filename, tracing_mnt);
         }
                 break;
         default:
diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile
index e630f9fc4fb6..fc9af57b666e 100644
--- a/tools/lib/bpf/Makefile
+++ b/tools/lib/bpf/Makefile
@@ -123,8 +123,10 @@ endif
 # the same command line setup.
 MAKEOVERRIDES=
 
+all:
+
 export srctree OUTPUT CC LD CFLAGS V
-build := -f $(srctree)/tools/build/Makefile.build dir=. obj
+include $(srctree)/tools/build/Makefile.include
 
 BPF_IN    := $(OUTPUT)libbpf-in.o
 LIB_FILE := $(addprefix $(OUTPUT),$(LIB_FILE))
@@ -133,7 +135,7 @@ CMD_TARGETS = $(LIB_FILE)
 
 TARGETS = $(CMD_TARGETS)
 
-all: $(VERSION_FILES) all_cmd
+all: fixdep $(VERSION_FILES) all_cmd
 
 all_cmd: $(CMD_TARGETS)
 
diff --git a/tools/lib/lockdep/Makefile b/tools/lib/lockdep/Makefile
index 18ffccf00426..7e319afac78a 100644
--- a/tools/lib/lockdep/Makefile
+++ b/tools/lib/lockdep/Makefile
@@ -93,8 +93,10 @@ else
   print_install =               echo '  INSTALL  '$1'   to      $(DESTDIR_SQ)$2';
 endif
 
+all:
+
 export srctree OUTPUT CC LD CFLAGS V
-build := -f $(srctree)/tools/build/Makefile.build dir=. obj
+include $(srctree)/tools/build/Makefile.include
 
 do_compile_shared_library =                     \
         ($(print_shared_lib_compile)            \
@@ -109,7 +111,7 @@ CMD_TARGETS = $(LIB_FILE)
 TARGETS = $(CMD_TARGETS)
 
 
-all: all_cmd
+all: fixdep all_cmd
 
 all_cmd: $(CMD_TARGETS)