perf callchains: Use thread->mg->machine

The unwind__get_entries() already receives the thread parameter, from where it can
obtain the matching machine structure, shorten the signature.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-isjc6bm8mv4612mhi6af64go@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

5 files changed, 14 insertions, 16 deletions

diff --git a/tools/perf/tests/dwarf-unwind.c b/tools/perf/tests/dwarf-unwind.c
index fc25e57f4a5d..ab28cca2cb97 100644
--- a/tools/perf/tests/dwarf-unwind.c
+++ b/tools/perf/tests/dwarf-unwind.c
@@ -59,7 +59,7 @@ static int unwind_entry(struct unwind_entry *entry, void *arg)
 }
 
 __attribute__ ((noinline))
-static int unwind_thread(struct thread *thread, struct machine *machine)
+static int unwind_thread(struct thread *thread)
 {
         struct perf_sample sample;
         unsigned long cnt = 0;
@@ -72,7 +72,7 @@ static int unwind_thread(struct thread *thread, struct machine *machine)
                 goto out;
         }
 
-        err = unwind__get_entries(unwind_entry, &cnt, machine, thread,
+        err = unwind__get_entries(unwind_entry, &cnt, thread,
                                   &sample, MAX_STACK);
         if (err)
                 pr_debug("unwind failed\n");
@@ -89,21 +89,21 @@ static int unwind_thread(struct thread *thread, struct machine *machine)
 }
 
 __attribute__ ((noinline))
-static int krava_3(struct thread *thread, struct machine *machine)
+static int krava_3(struct thread *thread)
 {
-        return unwind_thread(thread, machine);
+        return unwind_thread(thread);
 }
 
 __attribute__ ((noinline))
-static int krava_2(struct thread *thread, struct machine *machine)
+static int krava_2(struct thread *thread)
 {
-        return krava_3(thread, machine);
+        return krava_3(thread);
 }
 
 __attribute__ ((noinline))
-static int krava_1(struct thread *thread, struct machine *machine)
+static int krava_1(struct thread *thread)
 {
-        return krava_2(thread, machine);
+        return krava_2(thread);
 }
 
 int test__dwarf_unwind(void)
@@ -137,7 +137,7 @@ int test__dwarf_unwind(void)
                 goto out;
         }
 
-        err = krava_1(thread, machine);
+        err = krava_1(thread);
 
  out:
         machine__delete_threads(machine);
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index fd192e4885cc..51a630301afa 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1486,7 +1486,7 @@ int thread__resolve_callchain(struct thread *thread,
             (!sample->user_stack.size))
                 return 0;
 
-        return unwind__get_entries(unwind_entry, &callchain_cursor, thread->mg->machine,
+        return unwind__get_entries(unwind_entry, &callchain_cursor,
                                    thread, sample, max_stack);
 
 }
diff --git a/tools/perf/util/unwind-libdw.c b/tools/perf/util/unwind-libdw.c
index f24b350ab192..2dcfe9a7c8d0 100644
--- a/tools/perf/util/unwind-libdw.c
+++ b/tools/perf/util/unwind-libdw.c
@@ -164,14 +164,14 @@ frame_callback(Dwfl_Frame *state, void *arg)
 }
 
 int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
-                        struct machine *machine, struct thread *thread,
+                        struct thread *thread,
                         struct perf_sample *data,
                         int max_stack)
 {
         struct unwind_info ui = {
                 .sample         = data,
                 .thread         = thread,
-                .machine        = machine,
+                .machine        = thread->mg->machine,
                 .cb             = cb,
                 .arg            = arg,
                 .max_stack      = max_stack,
diff --git a/tools/perf/util/unwind-libunwind.c b/tools/perf/util/unwind-libunwind.c
index 29acc8cccb56..371219a6daf1 100644
--- a/tools/perf/util/unwind-libunwind.c
+++ b/tools/perf/util/unwind-libunwind.c
@@ -592,14 +592,14 @@ static int get_entries(struct unwind_info *ui, unwind_entry_cb_t cb,
 }
 
 int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
-                        struct machine *machine, struct thread *thread,
+                        struct thread *thread,
                         struct perf_sample *data, int max_stack)
 {
         u64 ip;
         struct unwind_info ui = {
                 .sample       = data,
                 .thread       = thread,
-                .machine      = machine,
+                .machine      = thread->mg->machine,
         };
         int ret;
 
diff --git a/tools/perf/util/unwind.h b/tools/perf/util/unwind.h
index f50b737235eb..12790cf94618 100644
--- a/tools/perf/util/unwind.h
+++ b/tools/perf/util/unwind.h
@@ -16,7 +16,6 @@ typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry, void *arg);
 
 #ifdef HAVE_DWARF_UNWIND_SUPPORT
 int unwind__get_entries(unwind_entry_cb_t cb, void *arg,
-                        struct machine *machine,
                         struct thread *thread,
                         struct perf_sample *data, int max_stack);
 /* libunwind specific */
@@ -38,7 +37,6 @@ static inline void unwind__finish_access(struct thread *thread __maybe_unused) {
 static inline int
 unwind__get_entries(unwind_entry_cb_t cb __maybe_unused,
                     void *arg __maybe_unused,
-                    struct machine *machine __maybe_unused,
                     struct thread *thread __maybe_unused,
                     struct perf_sample *data __maybe_unused,
                     int max_stack __maybe_unused)