From: Ian Rogers <irogers@google.com>
Date: Sat, 7 Feb 2026 08:24:27 +0000 (-0800)
Subject: perf bpf_map: Remove unused code
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=5cd621dead2b1fe71afa723f73904242a1bd01a8;p=thirdparty%2Fkernel%2Flinux.git

perf bpf_map: Remove unused code

bpf_map__fprintf is unused so delete it, the header file declaring it
and the now unused static helper functions.

Signed-off-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 7ff85fa90d988..1c38f3d16a31e 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -21,7 +21,6 @@
 #include <bpf/libbpf.h>
 #include <bpf/btf.h>
 #endif
-#include "util/bpf_map.h"
 #include "util/rlimit.h"
 #include "builtin.h"
 #include "util/cgroup.h"
diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 89de23dec4014..70cc91d00804d 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -170,7 +170,6 @@ perf-util-y += mutex.o
 perf-util-y += sharded_mutex.o
 perf-util-y += intel-tpebs.o
 
-perf-util-$(CONFIG_LIBBPF) += bpf_map.o
 perf-util-$(CONFIG_PERF_BPF_SKEL) += bpf_counter.o
 perf-util-$(CONFIG_PERF_BPF_SKEL) += bpf_counter_cgroup.o
 perf-util-$(CONFIG_PERF_BPF_SKEL) += bpf_ftrace.o
diff --git a/tools/perf/util/bpf_map.c b/tools/perf/util/bpf_map.c
deleted file mode 100644
index 442f91b4e8e15..0000000000000
--- a/tools/perf/util/bpf_map.c
+++ /dev/null
@@ -1,70 +0,0 @@
-// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
-
-#include "util/bpf_map.h"
-#include <bpf/bpf.h>
-#include <bpf/libbpf.h>
-#include <linux/err.h>
-#include <linux/kernel.h>
-#include <errno.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-static bool bpf_map__is_per_cpu(enum bpf_map_type type)
-{
-	return type == BPF_MAP_TYPE_PERCPU_HASH ||
-	       type == BPF_MAP_TYPE_PERCPU_ARRAY ||
-	       type == BPF_MAP_TYPE_LRU_PERCPU_HASH ||
-	       type == BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE;
-}
-
-static void *bpf_map__alloc_value(const struct bpf_map *map)
-{
-	if (bpf_map__is_per_cpu(bpf_map__type(map)))
-		return malloc(round_up(bpf_map__value_size(map), 8) *
-			      sysconf(_SC_NPROCESSORS_CONF));
-
-	return malloc(bpf_map__value_size(map));
-}
-
-int bpf_map__fprintf(struct bpf_map *map, FILE *fp)
-{
-	void *prev_key = NULL, *key, *value;
-	int fd = bpf_map__fd(map), err;
-	int printed = 0;
-
-	if (fd < 0)
-		return fd;
-
-	err = -ENOMEM;
-	key = malloc(bpf_map__key_size(map));
-	if (key == NULL)
-		goto out;
-
-	value = bpf_map__alloc_value(map);
-	if (value == NULL)
-		goto out_free_key;
-
-	while ((err = bpf_map_get_next_key(fd, prev_key, key) == 0)) {
-		int intkey = *(int *)key;
-
-		if (!bpf_map_lookup_elem(fd, key, value)) {
-			bool boolval = *(bool *)value;
-			if (boolval)
-				printed += fprintf(fp, "[%d] = %d,\n", intkey, boolval);
-		} else {
-			printed += fprintf(fp, "[%d] = ERROR,\n", intkey);
-		}
-
-		prev_key = key;
-	}
-
-	if (err == ENOENT)
-		err = printed;
-
-	free(value);
-out_free_key:
-	free(key);
-out:
-	return err;
-}
diff --git a/tools/perf/util/bpf_map.h b/tools/perf/util/bpf_map.h
deleted file mode 100644
index c2f7c13cba23f..0000000000000
--- a/tools/perf/util/bpf_map.h
+++ /dev/null
@@ -1,23 +0,0 @@
-// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
-#ifndef __PERF_BPF_MAP_H
-#define __PERF_BPF_MAP_H 1
-
-#include <stdio.h>
-struct bpf_map;
-
-#ifdef HAVE_LIBBPF_SUPPORT
-
-int bpf_map__fprintf(struct bpf_map *map, FILE *fp);
-
-#else
-
-#include <linux/compiler.h>
-
-static inline int bpf_map__fprintf(struct bpf_map *map __maybe_unused, FILE *fp __maybe_unused)
-{
-	return 0;
-}
-
-#endif // HAVE_LIBBPF_SUPPORT
-
-#endif // __PERF_BPF_MAP_H