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:

User visible changes:

  - Switch the default callchain output mode to 'graph,0.5,caller', to make it
    look like the default for other tools, reducing the learning curve for
    people used to 'caller' based viewing. (Arnaldo Carvalho de Melo)

  - Implement column based horizontal scrolling in the hists browser (top, report),
    making it possible to use the TUI for things like 'perf mem report' where
    there are many more columns than can fit in a terminal. (Arnaldo Carvalho de Melo)

  - Support sorting by symbol_iaddr with perf.data files produced by
    'perf mem record'. (Don Zickus)

  - Display DATA_SRC sample type bit, i.e. when running 'perf evlist -v' the
    "DATA_SRC" wasn't appearing when set, fix it to look like: (Jiri Olsa)

      cpu/mem-loads/pp: ...SNIP... sample_type: IP|TID|TIME|ADDR|CPU|PERIOD|DATA_SRC

  - Introduce the 'P' event modifier, meaning 'max precision level, please', i.e.:

     $ perf record -e cycles:P usleep 1

    Is now similar to:

     $ perf record usleep 1

    Useful, for instance, when specifying multiple events. (Jiri Olsa)

  - Make 'perf -v' and 'perf -h' work. (Jiri Olsa)

  - Fail properly when pattern matching fails to find a tracepoint, i.e.
    '-e non:existent' was being correctly handled, with a proper error message
    about that not being a valid event, but '-e non:existent*' wasn't,
    fix it. (Jiri Olsa)

Infrastructure changes:

  - Separate arch specific entries in 'perf test' and add an 'Intel CQM' one
    to be fun on x86 only. (Matt Fleming)

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

2 files changed, 4 insertions, 4 deletions

diff --git a/tools/lib/api/fs/fs.c b/tools/lib/api/fs/fs.c
index 732dbef588b0..459599d1b6c4 100644
--- a/tools/lib/api/fs/fs.c
+++ b/tools/lib/api/fs/fs.c
@@ -69,7 +69,7 @@ static const char * const tracefs__known_mountpoints[] = {
 struct fs {
         const char              *name;
         const char * const      *mounts;
-        char                     path[PATH_MAX + 1];
+        char                     path[PATH_MAX];
         bool                     found;
         long                     magic;
 };
diff --git a/tools/lib/api/fs/tracing_path.c b/tools/lib/api/fs/tracing_path.c
index 0406a7d5c891..a26bb5ea8283 100644
--- a/tools/lib/api/fs/tracing_path.c
+++ b/tools/lib/api/fs/tracing_path.c
@@ -12,9 +12,9 @@
 #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";
+char tracing_mnt[PATH_MAX]         = "/sys/kernel/debug";
+char tracing_path[PATH_MAX]        = "/sys/kernel/debug/tracing";
+char tracing_events_path[PATH_MAX] = "/sys/kernel/debug/tracing/events";
 
 
 static void __tracing_path_set(const char *tracing, const char *mountpoint)