perf tools: Move everything related to sys_perf_event_open() to perf-sys.h

And remove unneeded include directives from perf-sys.h to prune the
header dependency tree.

Fixup the fallout in places where definitions were being used without
the needed include directives that were being satisfied because they
were in perf-sys.h.

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-7b1zvugiwak4ibfa3j6ott7f@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/arch/common.c

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 #include "common.h"
 #include "../util/env.h"
 #include "../util/debug.h"

tools/perf/arch/x86/tests/rdpmc.c

@@ -7,7 +7,7 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <linux/types.h>
-#include "perf.h"
+#include "perf-sys.h"
 #include "debug.h"
 #include "tests/tests.h"
 #include "cloexec.h"

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

@@ -4,7 +4,7 @@
 #include <regex.h>
 #include <linux/zalloc.h>
 
-#include "../../perf.h"
+#include "../../perf-sys.h"
 #include "../../util/perf_regs.h"
 #include "../../util/debug.h"
 

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

@@ -7,6 +7,7 @@
 
 #include "../../../perf.h"
 #include <linux/types.h>
+#include <asm/barrier.h>
 #include "../../../util/debug.h"
 #include "../../../util/tsc.h"
 

tools/perf/bench/epoll-ctl.c

@@ -14,6 +14,7 @@
 #include <inttypes.h>
 #include <signal.h>
 #include <stdlib.h>
+#include <unistd.h>
 #include <linux/compiler.h>
 #include <linux/kernel.h>
 #include <sys/time.h>

tools/perf/bench/epoll-wait.c

@@ -63,6 +63,7 @@
 /* For the CLR_() macros */
 #include <string.h>
 #include <pthread.h>
+#include <unistd.h>
 
 #include <errno.h>
 #include <inttypes.h>

tools/perf/bench/mem-functions.c

@@ -8,7 +8,7 @@
  */
 
 #include "debug.h"
-#include "../perf.h"
+#include "../perf-sys.h"
 #include <subcmd/parse-options.h>
 #include "../util/header.h"
 #include "../util/cloexec.h"
@@ -20,6 +20,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include <sys/time.h>
 #include <errno.h>
 #include <linux/time64.h>

tools/perf/builtin-sched.c

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 #include "builtin.h"
 #include "perf.h"
+#include "perf-sys.h"
 
 #include "util/evlist.h"
 #include "util/cache.h"

tools/perf/perf-sys.h

@@ -5,10 +5,17 @@
 #include <unistd.h>
 #include <sys/types.h>
 #include <sys/syscall.h>
-#include <linux/types.h>
 #include <linux/compiler.h>
-#include <linux/perf_event.h>
+
-#include <asm/barrier.h>
+struct perf_event_attr;
+
+extern bool test_attr__enabled;
+void test_attr__ready(void);
+void test_attr__init(void);
+void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
+		     int fd, int group_fd, unsigned long flags);
+
+#define HAVE_ATTR_TEST
 
 static inline int
 sys_perf_event_open(struct perf_event_attr *attr,

tools/perf/perf.c

@@ -19,6 +19,7 @@
 #include "util/debug.h"
 #include "util/event.h"
 #include "util/util.h"
+#include "perf-sys.h"
 #include <api/fs/fs.h>
 #include <api/fs/tracing_path.h>
 #include <errno.h>

tools/perf/perf.h

@@ -4,18 +4,6 @@
 
 #include <time.h>
 #include <stdbool.h>
-#include <linux/types.h>
-#include <linux/stddef.h>
-#include <linux/perf_event.h>
-
-extern bool test_attr__enabled;
-void test_attr__ready(void);
-void test_attr__init(void);
-void test_attr__open(struct perf_event_attr *attr, pid_t pid, int cpu,
-		     int fd, int group_fd, unsigned long flags);
-
-#define HAVE_ATTR_TEST
-#include "perf-sys.h"
 
 static inline unsigned long long rdclock(void)
 {

tools/perf/tests/attr.c

@@ -30,7 +30,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <unistd.h>
-#include "../perf.h"
+#include "../perf-sys.h"
 #include <subcmd/exec-cmd.h>
 #include "tests.h"
 

tools/perf/tests/bp_account.c

@@ -19,7 +19,7 @@
 
 #include "tests.h"
 #include "debug.h"
-#include "perf.h"
+#include "../perf-sys.h"
 #include "cloexec.h"
 
 volatile long the_var;

tools/perf/tests/bp_signal.c

@@ -25,7 +25,7 @@
 
 #include "tests.h"
 #include "debug.h"
-#include "perf.h"
+#include "perf-sys.h"
 #include "cloexec.h"
 
 static int fd1;

tools/perf/tests/bp_signal_overflow.c

@@ -24,7 +24,7 @@
 
 #include "tests.h"
 #include "debug.h"
-#include "perf.h"
+#include "../perf-sys.h"
 #include "cloexec.h"
 
 static int overflows;

tools/perf/tests/wp.c

@@ -1,10 +1,12 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <stdlib.h>
+#include <unistd.h>
 #include <sys/ioctl.h>
 #include <linux/hw_breakpoint.h>
 #include "tests.h"
 #include "debug.h"
 #include "cloexec.h"
+#include "../perf-sys.h"
 
 #define WP_TEST_ASSERT_VAL(fd, text, val)       \
 do {                                            \

tools/perf/util/auxtrace.h

@@ -15,6 +15,7 @@
 #include <linux/perf_event.h>
 #include <linux/types.h>
 #include <asm/bitsperlong.h>
+#include <asm/barrier.h>
 
 #include "../perf.h"
 #include "event.h"

tools/perf/util/cloexec.c

@@ -2,7 +2,7 @@
 #include <errno.h>
 #include <sched.h>
 #include "util.h"
-#include "../perf.h"
+#include "../perf-sys.h"
 #include "cloexec.h"
 #include "asm/bug.h"
 #include "debug.h"

tools/perf/util/evsel.c

@@ -41,6 +41,7 @@
 #include "string2.h"
 #include "memswap.h"
 #include "util.h"
+#include "../perf-sys.h"
 #include "util/parse-branch-options.h"
 #include <internal/xyarray.h>
 

tools/perf/util/genelf.c

@@ -14,6 +14,7 @@
 #include <libelf.h>
 #include <string.h>
 #include <stdlib.h>
+#include <unistd.h>
 #include <inttypes.h>
 #include <limits.h>
 #include <fcntl.h>
@@ -25,6 +26,7 @@
 #include "perf.h"
 #include "genelf.h"
 #include "../util/jitdump.h"
+#include <linux/compiler.h>
 
 #ifndef NT_GNU_BUILD_ID
 #define NT_GNU_BUILD_ID 3

tools/perf/util/python.c

@@ -14,6 +14,7 @@
 #include "thread_map.h"
 #include "mmap.h"
 #include "util.h"
+#include "../perf-sys.h"
 
 #if PY_MAJOR_VERSION < 3
 #define _PyUnicode_FromString(arg) \

tools/perf/util/record.c

@@ -10,6 +10,7 @@
 #include "util.h"
 #include "cloexec.h"
 #include "record.h"
+#include "../perf-sys.h"
 
 typedef void (*setup_probe_fn_t)(struct evsel *evsel);
 

tools/perf/util/strbuf.c

@@ -4,6 +4,7 @@
 #include <linux/zalloc.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 /*
  * Used as the default ->buf value, so that people can always assume