perf list: List callback support for libpfm

Missed previously, add libpfm support for 'perf list' callbacks and
thereby JSON support.

Committer notes:

Add __maybe_unused to the args of the new print_libpfm_events() in the
else HAVE_LIBPFM block.

Fixes: e42b0ee61282a2f9 ("perf list: Add JSON output option")
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Xin Gao <gaoxin@cdjrlc.com>
Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Link: https://lore.kernel.org/r/20221118024607.409083-4-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/tools/perf/util/pfm.h b/tools/perf/util/pfm.h
index 7d70dda87012..fb25c2749d26 100644
--- a/tools/perf/util/pfm.h
+++ b/tools/perf/util/pfm.h
@@ -7,13 +7,14 @@
 #ifndef __PERF_PFM_H
 #define __PERF_PFM_H
 
+#include "print-events.h"
 #include <subcmd/parse-options.h>
 
 #ifdef HAVE_LIBPFM
 int parse_libpfm_events_option(const struct option *opt, const char *str,
 			int unset);
 
-void print_libpfm_events(bool name_only, bool long_desc);
+void print_libpfm_events(const struct print_callbacks *print_cb, void *print_state);
 
 #else
 #include <linux/compiler.h>
@@ -26,8 +27,8 @@ static inline int parse_libpfm_events_option(
 	return 0;
 }
 
-static inline void print_libpfm_events(bool name_only __maybe_unused,
-				       bool long_desc __maybe_unused)
+static inline void print_libpfm_events(const struct print_callbacks *print_cb __maybe_unused,
+				       void *print_state __maybe_unused)
 {
 }