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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>
This commit is contained in:
Arnaldo Carvalho de Melo 2014-10-23 16:42:19 -03:00
parent cc8b7c2bf5
commit dd8c17a5fe
5 changed files with 14 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
tools/perf/tests/dwarf-unwind.c
View File

@ -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);

2
tools/perf/util/machine.c
View File

@ -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);
}

4
tools/perf/util/unwind-libdw.c
View File

@ -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,

4
tools/perf/util/unwind-libunwind.c
View File

@ -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;

2
tools/perf/util/unwind.h
View File

@ -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)