tools lib: Adopt zalloc()/zfree() from tools/perf

Eroding a bit more the tools/perf/util/util.h hodpodge header.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-natazosyn9rwjka25tvcnyi0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/include/linux/zalloc.h

@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: LGPL-2.1
+#ifndef __TOOLS_LINUX_ZALLOC_H
+#define __TOOLS_LINUX_ZALLOC_H
+
+#include <stddef.h>
+
+void *zalloc(size_t size);
+void __zfree(void **ptr);
+
+#define zfree(ptr) __zfree((void **)(ptr))
+
+#endif // __TOOLS_LINUX_ZALLOC_H

tools/lib/zalloc.c

@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: LGPL-2.1
+
+#include <stdlib.h>
+#include <linux/zalloc.h>
+
+void *zalloc(size_t size)
+{
+	return calloc(1, size);
+}
+
+void __zfree(void **ptr)
+{
+	free(*ptr);
+	*ptr = NULL;
+}

tools/perf/MANIFEST

@@ -18,3 +18,4 @@ tools/lib/find_bit.c
 tools/lib/bitmap.c
 tools/lib/str_error_r.c
 tools/lib/vsprintf.c
+tools/lib/zalloc.c

tools/perf/arch/arm/annotate/instructions.c

@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <linux/compiler.h>
+#include <linux/zalloc.h>
 #include <sys/types.h>
 #include <regex.h>
 

tools/perf/arch/arm/util/auxtrace.c

@@ -6,6 +6,7 @@
 
 #include <stdbool.h>
 #include <linux/coresight-pmu.h>
+#include <linux/zalloc.h>
 
 #include "../../util/auxtrace.h"
 #include "../../util/evlist.h"

tools/perf/arch/arm/util/cs-etm.c

@@ -12,6 +12,7 @@
 #include <linux/kernel.h>
 #include <linux/log2.h>
 #include <linux/types.h>
+#include <linux/zalloc.h>
 
 #include "cs-etm.h"
 #include "../../perf.h"

tools/perf/arch/arm64/util/arm-spe.c

@@ -8,6 +8,7 @@
 #include <linux/types.h>
 #include <linux/bitops.h>
 #include <linux/log2.h>
+#include <linux/zalloc.h>
 #include <time.h>
 
 #include "../../util/cpumap.h"

tools/perf/arch/common.c

@@ -3,8 +3,8 @@
 #include <stdlib.h>
 #include "common.h"
 #include "../util/env.h"
-#include "../util/util.h"
 #include "../util/debug.h"
+#include <linux/zalloc.h>
 
 const char *const arc_triplets[] = {
 	"arc-linux-",

tools/perf/arch/powerpc/util/perf_regs.c

@@ -2,9 +2,9 @@
 #include <errno.h>
 #include <string.h>
 #include <regex.h>
+#include <linux/zalloc.h>
 
 #include "../../perf.h"
-#include "../../util/util.h"
 #include "../../util/perf_regs.h"
 #include "../../util/debug.h"
 

tools/perf/arch/s390/util/auxtrace.c

@@ -3,6 +3,7 @@
 #include <linux/types.h>
 #include <linux/bitops.h>
 #include <linux/log2.h>
+#include <linux/zalloc.h>
 
 #include "../../util/evlist.h"
 #include "../../util/auxtrace.h"

tools/perf/arch/s390/util/header.c

@@ -13,9 +13,9 @@
 #include <string.h>
 #include <linux/ctype.h>
 #include <linux/kernel.h>
+#include <linux/zalloc.h>
 
 #include "../../util/header.h"
-#include "../../util/util.h"
 
 #define SYSINFO_MANU	"Manufacturer:"
 #define SYSINFO_TYPE	"Type:"

tools/perf/arch/x86/util/event.c

@@ -1,11 +1,11 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <linux/types.h>
 #include <linux/string.h>
+#include <linux/zalloc.h>
 
 #include "../../util/machine.h"
 #include "../../util/tool.h"
 #include "../../util/map.h"
-#include "../../util/util.h"
 #include "../../util/debug.h"
 
 #if defined(__x86_64__)

tools/perf/arch/x86/util/intel-bts.c

@@ -9,12 +9,12 @@
 #include <linux/types.h>
 #include <linux/bitops.h>
 #include <linux/log2.h>
+#include <linux/zalloc.h>
 
 #include "../../util/cpumap.h"
 #include "../../util/evsel.h"
 #include "../../util/evlist.h"
 #include "../../util/session.h"
-#include "../../util/util.h"
 #include "../../util/pmu.h"
 #include "../../util/debug.h"
 #include "../../util/tsc.h"

tools/perf/arch/x86/util/intel-pt.c

@@ -10,6 +10,7 @@
 #include <linux/types.h>
 #include <linux/bitops.h>
 #include <linux/log2.h>
+#include <linux/zalloc.h>
 #include <cpuid.h>
 
 #include "../../perf.h"
@@ -25,7 +26,6 @@
 #include "../../util/auxtrace.h"
 #include "../../util/tsc.h"
 #include "../../util/intel-pt.h"
-#include "../../util/util.h"
 
 #define KiB(x) ((x) * 1024)
 #define MiB(x) ((x) * 1024 * 1024)

tools/perf/arch/x86/util/perf_regs.c

@@ -2,9 +2,9 @@
 #include <errno.h>
 #include <string.h>
 #include <regex.h>
+#include <linux/zalloc.h>
 
 #include "../../perf.h"
-#include "../../util/util.h"
 #include "../../util/perf_regs.h"
 #include "../../util/debug.h"
 

tools/perf/bench/mem-functions.c

@@ -9,7 +9,6 @@
 
 #include "debug.h"
 #include "../perf.h"
-#include "../util/util.h"
 #include <subcmd/parse-options.h>
 #include "../util/header.h"
 #include "../util/cloexec.h"
@@ -24,6 +23,7 @@
 #include <sys/time.h>
 #include <errno.h>
 #include <linux/time64.h>
+#include <linux/zalloc.h>
 
 #define K 1024
 

tools/perf/bench/numa.c

@@ -11,7 +11,6 @@
 
 #include "../perf.h"
 #include "../builtin.h"
-#include "../util/util.h"
 #include <subcmd/parse-options.h>
 #include "../util/cloexec.h"
 
@@ -35,6 +34,7 @@
 #include <linux/kernel.h>
 #include <linux/time64.h>
 #include <linux/numa.h>
+#include <linux/zalloc.h>
 
 #include <numa.h>
 #include <numaif.h>

tools/perf/builtin-annotate.c

@@ -8,11 +8,11 @@
  */
 #include "builtin.h"
 
-#include "util/util.h"
 #include "util/color.h"
 #include <linux/list.h>
 #include "util/cache.h"
 #include <linux/rbtree.h>
+#include <linux/zalloc.h>
 #include "util/symbol.h"
 
 #include "perf.h"

tools/perf/builtin-bench.c

@@ -17,7 +17,6 @@
  *  epoll ... Event poll performance
  */
 #include "perf.h"
-#include "util/util.h"
 #include <subcmd/parse-options.h>
 #include "builtin.h"
 #include "bench/bench.h"
@@ -26,6 +25,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/prctl.h>
+#include <linux/zalloc.h>
 
 typedef int (*bench_fn_t)(int argc, const char **argv);
 

tools/perf/builtin-c2c.c

@@ -15,9 +15,9 @@
 #include <linux/compiler.h>
 #include <linux/kernel.h>
 #include <linux/stringify.h>
+#include <linux/zalloc.h>
 #include <asm/bug.h>
 #include <sys/param.h>
-#include "util.h"
 #include "debug.h"
 #include "builtin.h"
 #include <subcmd/parse-options.h>

tools/perf/builtin-diff.c

@@ -16,12 +16,12 @@
 #include "util/tool.h"
 #include "util/sort.h"
 #include "util/symbol.h"
-#include "util/util.h"
 #include "util/data.h"
 #include "util/config.h"
 #include "util/time-utils.h"
 #include "util/annotate.h"
 #include "util/map.h"
+#include <linux/zalloc.h>
 
 #include <errno.h>
 #include <inttypes.h>

tools/perf/builtin-help.c

@@ -14,6 +14,7 @@
 #include <subcmd/help.h>
 #include "util/debug.h"
 #include <linux/kernel.h>
+#include <linux/zalloc.h>
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>

tools/perf/builtin-kmem.c

@@ -4,7 +4,6 @@
 
 #include "util/evlist.h"
 #include "util/evsel.h"
-#include "util/util.h"
 #include "util/config.h"
 #include "util/map.h"
 #include "util/symbol.h"
@@ -26,6 +25,7 @@
 #include <linux/kernel.h>
 #include <linux/rbtree.h>
 #include <linux/string.h>
+#include <linux/zalloc.h>
 #include <errno.h>
 #include <inttypes.h>
 #include <locale.h>

tools/perf/builtin-kvm.c

@@ -5,7 +5,6 @@
 #include "util/evsel.h"
 #include "util/evlist.h"
 #include "util/term.h"
-#include "util/util.h"
 #include "util/cache.h"
 #include "util/symbol.h"
 #include "util/thread.h"
@@ -32,6 +31,7 @@
 
 #include <linux/kernel.h>
 #include <linux/time64.h>
+#include <linux/zalloc.h>
 #include <errno.h>
 #include <inttypes.h>
 #include <poll.h>

tools/perf/builtin-lock.c

@@ -6,7 +6,6 @@
 
 #include "util/evlist.h"
 #include "util/evsel.h"
-#include "util/util.h"
 #include "util/cache.h"
 #include "util/symbol.h"
 #include "util/thread.h"
@@ -30,6 +29,7 @@
 #include <linux/list.h>
 #include <linux/hash.h>
 #include <linux/kernel.h>
+#include <linux/zalloc.h>
 
 static struct perf_session *session;
 

tools/perf/builtin-probe.c

@@ -19,7 +19,6 @@
 #include "perf.h"
 #include "builtin.h"
 #include "namespaces.h"
-#include "util/util.h"
 #include "util/strlist.h"
 #include "util/strfilter.h"
 #include "util/symbol.h"
@@ -28,6 +27,7 @@
 #include "util/probe-finder.h"
 #include "util/probe-event.h"
 #include "util/probe-file.h"
+#include <linux/zalloc.h>
 
 #define DEFAULT_VAR_FILTER "!__k???tab_* & !__crc_*"
 #define DEFAULT_FUNC_FILTER "!_*"

tools/perf/builtin-report.c

@@ -8,7 +8,6 @@
  */
 #include "builtin.h"
 
-#include "util/util.h"
 #include "util/config.h"
 
 #include "util/annotate.h"
@@ -16,6 +15,7 @@
 #include <linux/list.h>
 #include <linux/rbtree.h>
 #include <linux/err.h>
+#include <linux/zalloc.h>
 #include "util/map.h"
 #include "util/symbol.h"
 #include "util/callchain.h"

tools/perf/builtin-sched.c

@@ -2,7 +2,6 @@
 #include "builtin.h"
 #include "perf.h"
 
-#include "util/util.h"
 #include "util/evlist.h"
 #include "util/cache.h"
 #include "util/evsel.h"
@@ -26,6 +25,7 @@
 
 #include <linux/kernel.h>
 #include <linux/log2.h>
+#include <linux/zalloc.h>
 #include <sys/prctl.h>
 #include <sys/resource.h>
 #include <inttypes.h>

tools/perf/builtin-script.c

@@ -14,7 +14,6 @@
 #include "util/symbol.h"
 #include "util/thread.h"
 #include "util/trace-event.h"
-#include "util/util.h"
 #include "util/evlist.h"
 #include "util/evsel.h"
 #include "util/sort.h"
@@ -34,6 +33,7 @@
 #include <linux/kernel.h>
 #include <linux/stringify.h>
 #include <linux/time64.h>
+#include <linux/zalloc.h>
 #include <sys/utsname.h>
 #include "asm/bug.h"
 #include "util/mem-events.h"

tools/perf/builtin-stat.c

@@ -43,7 +43,6 @@
 #include "perf.h"
 #include "builtin.h"
 #include "util/cgroup.h"
-#include "util/util.h"
 #include <subcmd/parse-options.h>
 #include "util/parse-events.h"
 #include "util/pmu.h"
@@ -67,6 +66,7 @@
 #include "asm/bug.h"
 
 #include <linux/time64.h>
+#include <linux/zalloc.h>
 #include <api/fs/fs.h>
 #include <errno.h>
 #include <signal.h>

tools/perf/builtin-timechart.c

@@ -13,9 +13,6 @@
 #include <traceevent/event-parse.h>
 
 #include "builtin.h"
-
-#include "util/util.h"
-
 #include "util/color.h"
 #include <linux/list.h>
 #include "util/cache.h"
@@ -24,6 +21,7 @@
 #include <linux/kernel.h>
 #include <linux/rbtree.h>
 #include <linux/time64.h>
+#include <linux/zalloc.h>
 #include "util/symbol.h"
 #include "util/thread.h"
 #include "util/callchain.h"

tools/perf/builtin-trace.c

@@ -61,6 +61,7 @@
 #include <linux/random.h>
 #include <linux/stringify.h>
 #include <linux/time64.h>
+#include <linux/zalloc.h>
 #include <fcntl.h>
 #include <sys/sysmacros.h>
 

tools/perf/perf.c

@@ -18,7 +18,6 @@
 #include "util/bpf-loader.h"
 #include "util/debug.h"
 #include "util/event.h"
-#include "util/util.h"
 #include <api/fs/fs.h>
 #include <api/fs/tracing_path.h>
 #include <errno.h>
@@ -30,6 +29,7 @@
 #include <sys/stat.h>
 #include <unistd.h>
 #include <linux/kernel.h>
+#include <linux/zalloc.h>
 
 const char perf_usage_string[] =
 	"perf [--version] [--help] [OPTIONS] COMMAND [ARGS]";

tools/perf/tests/switch-tracking.c

@@ -4,6 +4,7 @@
 #include <errno.h>
 #include <time.h>
 #include <stdlib.h>
+#include <linux/zalloc.h>
 
 #include "parse-events.h"
 #include "evlist.h"

tools/perf/ui/browser.c

@@ -1,5 +1,4 @@
 // SPDX-License-Identifier: GPL-2.0
-#include "../util.h"
 #include "../string2.h"
 #include "../config.h"
 #include "../../perf.h"
@@ -17,6 +16,7 @@
 #include "keysyms.h"
 #include "../color.h"
 #include <linux/ctype.h>
+#include <linux/zalloc.h>
 
 static int ui_browser__percent_color(struct ui_browser *browser,
 				     double percent, bool current)

tools/perf/ui/browsers/annotate.c

@@ -1,5 +1,4 @@
 // SPDX-License-Identifier: GPL-2.0
-#include "../../util/util.h"
 #include "../browser.h"
 #include "../helpline.h"
 #include "../ui.h"
@@ -15,6 +14,7 @@
 #include <pthread.h>
 #include <linux/kernel.h>
 #include <linux/string.h>
+#include <linux/zalloc.h>
 #include <sys/ttydefaults.h>
 #include <asm/bug.h>
 

tools/perf/ui/browsers/hists.c

@@ -9,6 +9,7 @@
 #include <linux/string.h>
 #include <sys/ttydefaults.h>
 #include <linux/time64.h>
+#include <linux/zalloc.h>
 
 #include "../../util/callchain.h"
 #include "../../util/evsel.h"
@@ -18,7 +19,6 @@
 #include "../../util/symbol.h"
 #include "../../util/pstack.h"
 #include "../../util/sort.h"
-#include "../../util/util.h"
 #include "../../util/top.h"
 #include "../../util/thread.h"
 #include "../../arch/common.h"

tools/perf/ui/gtk/util.c

@@ -1,11 +1,10 @@
 // SPDX-License-Identifier: GPL-2.0
 #include "../util.h"
-#include "../../util/util.h"
 #include "../../util/debug.h"
 #include "gtk.h"
 
 #include <string.h>
-
+#include <linux/zalloc.h>
 
 struct perf_gtk_context *pgctx;
 

tools/perf/ui/stdio/hist.c

@@ -3,7 +3,6 @@
 #include <linux/string.h>
 
 #include "../../util/callchain.h"
-#include "../../util/util.h"
 #include "../../util/hist.h"
 #include "../../util/map.h"
 #include "../../util/map_groups.h"
@@ -14,6 +13,7 @@
 #include "../../util/string2.h"
 #include "../../util/thread.h"
 #include <linux/ctype.h>
+#include <linux/zalloc.h>
 
 static size_t callchain__fprintf_left_margin(FILE *fp, int left_margin)
 {

tools/perf/util/Build

@@ -25,6 +25,7 @@ perf-y += rbtree.o
 perf-y += libstring.o
 perf-y += bitmap.o
 perf-y += hweight.o
+perf-y += zalloc.o
 perf-y += smt.o
 perf-y += strbuf.o
 perf-y += string.o
@@ -241,3 +242,7 @@ $(OUTPUT)util/hweight.o: ../lib/hweight.c FORCE
 $(OUTPUT)util/vsprintf.o: ../lib/vsprintf.c FORCE
 	$(call rule_mkdir)
 	$(call if_changed_dep,cc_o_c)
+
+$(OUTPUT)util/zalloc.o: ../lib/zalloc.c FORCE
+	$(call rule_mkdir)
+	$(call if_changed_dep,cc_o_c)

tools/perf/util/arm-spe.c

@@ -12,6 +12,7 @@
 #include <linux/types.h>
 #include <linux/bitops.h>
 #include <linux/log2.h>
+#include <linux/zalloc.h>
 
 #include "cpumap.h"
 #include "color.h"
@@ -19,7 +20,6 @@
 #include "evlist.h"
 #include "machine.h"
 #include "session.h"
-#include "util.h"
 #include "thread.h"
 #include "debug.h"
 #include "auxtrace.h"

tools/perf/util/auxtrace.c

@@ -24,9 +24,9 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <linux/list.h>
+#include <linux/zalloc.h>
 
 #include "../perf.h"
-#include "util.h"
 #include "evlist.h"
 #include "dso.h"
 #include "map.h"

tools/perf/util/bpf-loader.c

@@ -12,6 +12,7 @@
 #include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/string.h>
+#include <linux/zalloc.h>
 #include <errno.h>
 #include "perf.h"
 #include "debug.h"

tools/perf/util/build-id.c

@@ -30,6 +30,7 @@
 #include "strlist.h"
 
 #include <linux/ctype.h>
+#include <linux/zalloc.h>
 
 static bool no_buildid_cache;
 

tools/perf/util/call-path.c

@@ -6,8 +6,9 @@
 
 #include <linux/rbtree.h>
 #include <linux/list.h>
+#include <linux/zalloc.h>
+#include <stdlib.h>
 
-#include "util.h"
 #include "call-path.h"
 
 static void call_path__init(struct call_path *cp, struct call_path *parent,

tools/perf/util/callchain.c

@@ -16,11 +16,11 @@
 #include <stdbool.h>
 #include <errno.h>
 #include <math.h>
+#include <linux/zalloc.h>
 
 #include "asm/bug.h"
 
 #include "hist.h"
-#include "util.h"
 #include "sort.h"
 #include "machine.h"
 #include "map.h"

tools/perf/util/cgroup.c

@@ -1,11 +1,11 @@
 // SPDX-License-Identifier: GPL-2.0
-#include "util.h"
 #include "../perf.h"
 #include <subcmd/parse-options.h>
 #include "evsel.h"
 #include "cgroup.h"
 #include "evlist.h"
 #include <linux/stringify.h>
+#include <linux/zalloc.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>

tools/perf/util/comm.c

@@ -1,12 +1,12 @@
 // SPDX-License-Identifier: GPL-2.0
 #include "comm.h"
-#include "util.h"
 #include <errno.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
 #include <linux/refcount.h>
 #include <linux/rbtree.h>
+#include <linux/zalloc.h>
 #include "rwsem.h"
 
 struct comm_str {

tools/perf/util/config.c

@@ -11,7 +11,6 @@
  */
 #include <errno.h>
 #include <sys/param.h>
-#include "util.h"
 #include "cache.h"
 #include "callchain.h"
 #include <subcmd/exec-cmd.h>
@@ -23,7 +22,7 @@
 #include <sys/stat.h>
 #include <unistd.h>
 #include <linux/string.h>
-
+#include <linux/zalloc.h>
 #include <linux/ctype.h>
 
 #define MAXNAME (256)

tools/perf/util/counts.c

@@ -3,7 +3,7 @@
 #include <stdlib.h>
 #include "evsel.h"
 #include "counts.h"
-#include "util.h"
+#include <linux/zalloc.h>
 
 struct perf_counts *perf_counts__new(int ncpus, int nthreads)
 {

tools/perf/util/cpumap.c

@@ -1,5 +1,4 @@
 // SPDX-License-Identifier: GPL-2.0
-#include "util.h"
 #include <api/fs/fs.h>
 #include "../perf.h"
 #include "cpumap.h"
@@ -11,6 +10,7 @@
 #include "asm/bug.h"
 
 #include <linux/ctype.h>
+#include <linux/zalloc.h>
 
 static int max_cpu_num;
 static int max_present_cpu_num;

tools/perf/util/cputopo.c

@@ -4,10 +4,10 @@
 #include <inttypes.h>
 #include <stdlib.h>
 #include <api/fs/fs.h>
+#include <linux/zalloc.h>
 
 #include "cputopo.h"
 #include "cpumap.h"
-#include "util.h"
 #include "env.h"
 
 #define CORE_SIB_FMT \

tools/perf/util/cs-etm-decoder/cs-etm-decoder.c

@@ -8,6 +8,7 @@
 
 #include <linux/err.h>
 #include <linux/list.h>
+#include <linux/zalloc.h>
 #include <stdlib.h>
 #include <opencsd/c_api/opencsd_c_api.h>
 #include <opencsd/etmv4/trc_pkt_types_etmv4.h>

tools/perf/util/cs-etm.c

@@ -11,6 +11,7 @@
 #include <linux/kernel.h>
 #include <linux/log2.h>
 #include <linux/types.h>
+#include <linux/zalloc.h>
 
 #include <opencsd/ocsd_if_types.h>
 #include <stdlib.h>

tools/perf/util/data-convert-bt.c

@@ -10,6 +10,7 @@
 #include <inttypes.h>
 #include <linux/compiler.h>
 #include <linux/kernel.h>
+#include <linux/zalloc.h>
 #include <babeltrace/ctf-writer/writer.h>
 #include <babeltrace/ctf-writer/clock.h>
 #include <babeltrace/ctf-writer/stream.h>
@@ -22,7 +23,6 @@
 #include "asm/bug.h"
 #include "data-convert-bt.h"
 #include "session.h"
-#include "util.h"
 #include "debug.h"
 #include "tool.h"
 #include "evlist.h"

tools/perf/util/data.c

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <linux/compiler.h>
 #include <linux/kernel.h>
+#include <linux/zalloc.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <errno.h>

tools/perf/util/db-export.c

@@ -14,11 +14,11 @@
 #include "symbol.h"
 #include "map.h"
 #include "event.h"
-#include "util.h"
 #include "thread-stack.h"
 #include "callchain.h"
 #include "call-path.h"
 #include "db-export.h"
+#include <linux/zalloc.h>
 
 struct deferred_export {
 	struct list_head node;

tools/perf/util/dso.c

@@ -2,6 +2,7 @@
 #include <asm/bug.h>
 #include <linux/kernel.h>
 #include <linux/string.h>
+#include <linux/zalloc.h>
 #include <sys/time.h>
 #include <sys/resource.h>
 #include <sys/types.h>
@@ -21,7 +22,7 @@
 #include "dso.h"
 #include "machine.h"
 #include "auxtrace.h"
-#include "util.h"
+#include "util.h" /* O_CLOEXEC for older systems */
 #include "debug.h"
 #include "string2.h"
 #include "vdso.h"

tools/perf/util/env.c

@@ -2,7 +2,7 @@
 #include "cpumap.h"
 #include "env.h"
 #include <linux/ctype.h>
-#include "util.h"
+#include <linux/zalloc.h>
 #include "bpf-event.h"
 #include <errno.h>
 #include <sys/utsname.h>

tools/perf/util/event.c

@@ -11,6 +11,7 @@
 #include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
 #include <api/fs/fs.h>
 #include <linux/perf_event.h>
+#include <linux/zalloc.h>
 #include "event.h"
 #include "debug.h"
 #include "hist.h"

tools/perf/util/evlist.c

@@ -5,7 +5,6 @@
  * Parts came from builtin-{top,stat,record}.c, see those files for further
  * copyright notes.
  */
-#include "util.h"
 #include <api/fs/fs.h>
 #include <errno.h>
 #include <inttypes.h>
@@ -33,6 +32,7 @@
 #include <linux/hash.h>
 #include <linux/log2.h>
 #include <linux/err.h>
+#include <linux/zalloc.h>
 
 #ifdef LACKS_SIGQUEUE_PROTOTYPE
 int sigqueue(pid_t pid, int sig, const union sigval value);

tools/perf/util/evsel.c

@@ -17,6 +17,7 @@
 #include <linux/perf_event.h>
 #include <linux/compiler.h>
 #include <linux/err.h>
+#include <linux/zalloc.h>
 #include <sys/ioctl.h>
 #include <sys/resource.h>
 #include <sys/types.h>
@@ -27,7 +28,6 @@
 #include "event.h"
 #include "evsel.h"
 #include "evlist.h"
-#include "util.h"
 #include "cpumap.h"
 #include "thread_map.h"
 #include "target.h"

tools/perf/util/header.c

@@ -1,7 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <errno.h>
 #include <inttypes.h>
-#include "util.h"
 #include "string2.h"
 #include <sys/param.h>
 #include <sys/types.h>
@@ -15,6 +14,7 @@
 #include <linux/bitops.h>
 #include <linux/string.h>
 #include <linux/stringify.h>
+#include <linux/zalloc.h>
 #include <sys/stat.h>
 #include <sys/utsname.h>
 #include <linux/time64.h>

tools/perf/util/help-unknown-cmd.c

@@ -3,9 +3,11 @@
 #include "config.h"
 #include <poll.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <subcmd/help.h>
 #include "../builtin.h"
 #include "levenshtein.h"
+#include <linux/zalloc.h>
 
 static int autocorrect;
 

tools/perf/util/hist.c

@@ -1,6 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
 #include "callchain.h"
-#include "util.h"
 #include "build-id.h"
 #include "hist.h"
 #include "map.h"
@@ -20,6 +19,7 @@
 #include <inttypes.h>
 #include <sys/param.h>
 #include <linux/time64.h>
+#include <linux/zalloc.h>
 
 static bool hists__filter_entry_by_dso(struct hists *hists,
 				       struct hist_entry *he);

tools/perf/util/intel-bts.c

@@ -12,6 +12,7 @@
 #include <linux/types.h>
 #include <linux/bitops.h>
 #include <linux/log2.h>
+#include <linux/zalloc.h>
 
 #include "cpumap.h"
 #include "color.h"
@@ -21,7 +22,6 @@
 #include "map.h"
 #include "symbol.h"
 #include "session.h"
-#include "util.h"
 #include "thread.h"
 #include "thread-stack.h"
 #include "debug.h"

tools/perf/util/intel-pt-decoder/intel-pt-decoder.c

@@ -14,9 +14,9 @@
 #include <stdint.h>
 #include <inttypes.h>
 #include <linux/compiler.h>
+#include <linux/zalloc.h>
 
 #include "../cache.h"
-#include "../util.h"
 #include "../auxtrace.h"
 
 #include "intel-pt-insn-decoder.h"

tools/perf/util/intel-pt.c

@@ -10,6 +10,7 @@
 #include <errno.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
+#include <linux/zalloc.h>
 
 #include "../perf.h"
 #include "session.h"
@@ -22,7 +23,6 @@
 #include "evsel.h"
 #include "map.h"
 #include "color.h"
-#include "util.h"
 #include "thread.h"
 #include "thread-stack.h"
 #include "symbol.h"

tools/perf/util/llvm-utils.c

@@ -9,6 +9,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <linux/err.h>
+#include <linux/zalloc.h>
 #include "debug.h"
 #include "llvm-utils.h"
 #include "config.h"

tools/perf/util/machine.c

@@ -15,7 +15,6 @@
 #include "strlist.h"
 #include "thread.h"
 #include "vdso.h"
-#include "util.h"
 #include <stdbool.h>
 #include <sys/types.h>
 #include <sys/stat.h>
@@ -28,6 +27,7 @@
 #include <linux/ctype.h>
 #include <symbol/kallsyms.h>
 #include <linux/mman.h>
+#include <linux/zalloc.h>
 
 static void __machine__remove_thread(struct machine *machine, struct thread *th, bool lock);
 

tools/perf/util/map.c

@@ -12,10 +12,10 @@
 #include "thread.h"
 #include "vdso.h"
 #include "build-id.h"
-#include "util.h"
 #include "debug.h"
 #include "machine.h"
 #include <linux/string.h>
+#include <linux/zalloc.h>
 #include "srcline.h"
 #include "namespaces.h"
 #include "unwind.h"

tools/perf/util/mem2node.c

@@ -1,8 +1,8 @@
 #include <errno.h>
 #include <inttypes.h>
 #include <linux/bitmap.h>
+#include <linux/zalloc.h>
 #include "mem2node.h"
-#include "util.h"
 
 struct phys_entry {
 	struct rb_node	rb_node;

tools/perf/util/mmap.c

@@ -9,6 +9,7 @@
 #include <sys/mman.h>
 #include <inttypes.h>
 #include <asm/bug.h>
+#include <linux/zalloc.h>
 #ifdef HAVE_LIBNUMA_SUPPORT
 #include <numaif.h>
 #endif

tools/perf/util/namespaces.c

@@ -5,7 +5,6 @@
  */
 
 #include "namespaces.h"
-#include "util.h"
 #include "event.h"
 #include "get_current_dir_name.h"
 #include <sys/types.h>
@@ -18,6 +17,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <asm/bug.h>
+#include <linux/zalloc.h>
 
 struct namespaces *namespaces__new(struct namespaces_event *event)
 {

tools/perf/util/parse-events.c

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <linux/hw_breakpoint.h>
 #include <linux/err.h>
+#include <linux/zalloc.h>
 #include <dirent.h>
 #include <errno.h>
 #include <sys/ioctl.h>

tools/perf/util/pmu.c

@@ -2,6 +2,7 @@
 #include <linux/list.h>
 #include <linux/compiler.h>
 #include <linux/string.h>
+#include <linux/zalloc.h>
 #include <sys/types.h>
 #include <errno.h>
 #include <fcntl.h>
@@ -14,7 +15,6 @@
 #include <api/fs/fs.h>
 #include <locale.h>
 #include <regex.h>
-#include "util.h"
 #include "pmu.h"
 #include "parse-events.h"
 #include "cpumap.h"

tools/perf/util/probe-event.c

@@ -19,7 +19,6 @@
 #include <limits.h>
 #include <elf.h>
 
-#include "util.h"
 #include "event.h"
 #include "namespaces.h"
 #include "strlist.h"
@@ -40,6 +39,7 @@
 #include "string2.h"
 
 #include <linux/ctype.h>
+#include <linux/zalloc.h>
 
 #define PERFPROBE_GROUP "probe"
 

tools/perf/util/probe-file.c

@@ -10,8 +10,8 @@
 #include <sys/types.h>
 #include <sys/uio.h>
 #include <unistd.h>
+#include <linux/zalloc.h>
 #include "namespaces.h"
-#include "util.h"
 #include "event.h"
 #include "strlist.h"
 #include "strfilter.h"

tools/perf/util/probe-finder.c

@@ -19,11 +19,11 @@
 #include <dwarf-regs.h>
 
 #include <linux/bitops.h>
+#include <linux/zalloc.h>
 #include "event.h"
 #include "dso.h"
 #include "debug.h"
 #include "intlist.h"
-#include "util.h"
 #include "strlist.h"
 #include "symbol.h"
 #include "probe-finder.h"

tools/perf/util/pstack.c

@@ -5,10 +5,10 @@
  * (c) 2010 Arnaldo Carvalho de Melo <acme@redhat.com>
  */
 
-#include "util.h"
 #include "pstack.h"
 #include "debug.h"
 #include <linux/kernel.h>
+#include <linux/zalloc.h>
 #include <stdlib.h>
 
 struct pstack {

tools/perf/util/python-ext-sources

@@ -18,6 +18,7 @@ util/namespaces.c
 ../lib/hweight.c
 ../lib/string.c
 ../lib/vsprintf.c
+../lib/zalloc.c
 util/thread_map.c
 util/util.c
 util/xyarray.c

tools/perf/util/s390-cpumsf.c

@@ -146,6 +146,7 @@
 #include <linux/types.h>
 #include <linux/bitops.h>
 #include <linux/log2.h>
+#include <linux/zalloc.h>
 
 #include <sys/stat.h>
 #include <sys/types.h>
@@ -156,7 +157,6 @@
 #include "evlist.h"
 #include "machine.h"
 #include "session.h"
-#include "util.h"
 #include "thread.h"
 #include "debug.h"
 #include "auxtrace.h"

tools/perf/util/session.c

@@ -2,6 +2,7 @@
 #include <errno.h>
 #include <inttypes.h>
 #include <linux/kernel.h>
+#include <linux/zalloc.h>
 #include <traceevent/event-parse.h>
 #include <api/fs/fs.h>
 
@@ -18,7 +19,6 @@
 #include "session.h"
 #include "tool.h"
 #include "sort.h"
-#include "util.h"
 #include "cpumap.h"
 #include "perf_regs.h"
 #include "asm/bug.h"

tools/perf/util/srcline.c

@@ -6,9 +6,9 @@
 
 #include <linux/kernel.h>
 #include <linux/string.h>
+#include <linux/zalloc.h>
 
 #include "util/dso.h"
-#include "util/util.h"
 #include "util/debug.h"
 #include "util/callchain.h"
 #include "util/symbol_conf.h"

tools/perf/util/stat.c

@@ -6,6 +6,7 @@
 #include "evlist.h"
 #include "evsel.h"
 #include "thread_map.h"
+#include <linux/zalloc.h>
 
 void update_stats(struct stats *stats, u64 val)
 {

tools/perf/util/strbuf.c

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 #include "debug.h"
-#include "util.h"
 #include <linux/kernel.h>
+#include <linux/zalloc.h>
 #include <errno.h>
 #include <stdlib.h>
 

tools/perf/util/strfilter.c

@@ -1,11 +1,12 @@
 // SPDX-License-Identifier: GPL-2.0
-#include "util.h"
 #include "string2.h"
 #include "strfilter.h"
 
 #include <errno.h>
+#include <stdlib.h>
 #include <linux/ctype.h>
 #include <linux/string.h>
+#include <linux/zalloc.h>
 
 /* Operators */
 static const char *OP_and	= "&";	/* Logical AND */

tools/perf/util/strlist.c

@@ -4,12 +4,12 @@
  */
 
 #include "strlist.h"
-#include "util.h"
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <linux/zalloc.h>
 
 static
 struct rb_node *strlist__node_new(struct rblist *rblist, const void *entry)

tools/perf/util/svghelper.c

@@ -15,10 +15,10 @@
 #include <string.h>
 #include <linux/bitmap.h>
 #include <linux/time64.h>
+#include <linux/zalloc.h>
 
 #include "perf.h"
 #include "svghelper.h"
-#include "util.h"
 #include "cpumap.h"
 
 static u64 first_time, last_time;

tools/perf/util/symbol-elf.c

@@ -17,6 +17,7 @@
 #include "debug.h"
 #include "util.h"
 #include <linux/ctype.h>
+#include <linux/zalloc.h>
 #include <symbol/kallsyms.h>
 
 #ifndef EM_AARCH64

tools/perf/util/symbol-minimal.c

@@ -10,7 +10,7 @@
 #include <stdlib.h>
 #include <byteswap.h>
 #include <sys/stat.h>
-
+#include <linux/zalloc.h>
 
 static bool check_need_swap(int file_endian)
 {

tools/perf/util/symbol.c

@@ -26,6 +26,7 @@
 #include "header.h"
 #include "path.h"
 #include <linux/ctype.h>
+#include <linux/zalloc.h>
 
 #include <elf.h>
 #include <limits.h>

tools/perf/util/syscalltbl.c

@@ -10,9 +10,9 @@
 #include <linux/compiler.h>
 
 #ifdef HAVE_SYSCALL_TABLE_SUPPORT
+#include <linux/zalloc.h>
 #include <string.h>
 #include "string2.h"
-#include "util.h"
 
 #if defined(__x86_64__)
 #include <asm/syscalls_64.c>

tools/perf/util/thread-stack.c

@@ -7,13 +7,13 @@
 #include <linux/rbtree.h>
 #include <linux/list.h>
 #include <linux/log2.h>
+#include <linux/zalloc.h>
 #include <errno.h>
 #include <stdlib.h>
 #include "thread.h"
 #include "event.h"
 #include "machine.h"
 #include "env.h"
-#include "util.h"
 #include "debug.h"
 #include "symbol.h"
 #include "comm.h"

tools/perf/util/thread.c

@@ -5,10 +5,10 @@
 #include <stdio.h>
 #include <string.h>
 #include <linux/kernel.h>
+#include <linux/zalloc.h>
 #include "session.h"
 #include "thread.h"
 #include "thread-stack.h"
-#include "util.h"
 #include "debug.h"
 #include "namespaces.h"
 #include "comm.h"

tools/perf/util/thread_map.c

@@ -13,9 +13,9 @@
 #include <string.h>
 #include <api/fs/fs.h>
 #include <linux/string.h>
+#include <linux/zalloc.h>
 #include "asm/bug.h"
 #include "thread_map.h"
-#include "util.h"
 #include "debug.h"
 #include "event.h"
 

tools/perf/util/trace-event-info.c

@@ -18,6 +18,7 @@
 #include <stdbool.h>
 #include <linux/list.h>
 #include <linux/kernel.h>
+#include <linux/zalloc.h>
 
 #include "../perf.h"
 #include "trace-event.h"

tools/perf/util/trace-event-scripting.c

@@ -12,8 +12,8 @@
 
 #include "../perf.h"
 #include "debug.h"
-#include "util.h"
 #include "trace-event.h"
+#include <linux/zalloc.h>
 
 struct scripting_context *scripting_context;
 

tools/perf/util/unwind-libdw.c

@@ -12,6 +12,7 @@
 #include "symbol.h"
 #include "thread.h"
 #include <linux/types.h>
+#include <linux/zalloc.h>
 #include "event.h"
 #include "perf_regs.h"
 #include "callchain.h"

tools/perf/util/util.h

@@ -9,8 +9,6 @@
 #include <fcntl.h>
 #include <stdbool.h>
 #include <stddef.h>
-#include <stdlib.h>
-#include <stdarg.h>
 #include <linux/compiler.h>
 #include <sys/types.h>
 
@@ -18,13 +16,6 @@
 void usage(const char *err) __noreturn;
 void die(const char *err, ...) __noreturn __printf(1, 2);
 
-static inline void *zalloc(size_t size)
-{
-	return calloc(1, size);
-}
-
-#define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
-
 struct dirent;
 struct nsinfo;
 struct strlist;