Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Tooling fixes, the biggest patch is one that decouples the kernel's
  list.h from tooling list.h"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
  perf tools: Fallback to srcdir/Documentation/tips.txt
  perf ui/tui: Print helpline message as is
  perf tools: Set and pass DOCDIR to builtin-report.c
  perf tools: Add file_only config option to strlist
  perf tools: Add more usage tips
  perf record: Add --buildid-all option
  tools subcmd: Add missing NORETURN define for parse-options.h
  tools: Fix formatting of the "make -C tools" help message
  tools: Make list.h self-sufficient
  perf tools: Fix mmap2 event allocation in synthesize code
  perf stat: Fix recort_usage typo
  perf test: Reset err after using it hold errcode in hist testcases
  perf test: Fix false TEST_OK result for 'perf test hist'
  tools build: Add BPF feature check to test-all
  perf bpf: Fix build breakage due to libbpf
  tools: Move Makefile.arch from perf/config to tools/scripts
  perf tools: Fix PowerPC native building
  perf tools: Fix phony build target for build-test
  perf tools: Add -lutil in python lib list for broken python-config
  perf tools: Add missing sources to perf's MANIFEST
  ...

Author: torvalds

tools/Makefile

@@ -8,24 +8,24 @@ include scripts/Makefile.include
 help:
 	@echo 'Possible targets:'
 	@echo ''
-	@echo '  acpi       - ACPI tools'
-	@echo '  cgroup     - cgroup tools'
-	@echo '  cpupower   - a tool for all things x86 CPU power'
-	@echo '  firewire   - the userspace part of nosy, an IEEE-1394 traffic sniffer'
-	@echo '  hv         - tools used when in Hyper-V clients'
-	@echo '  iio        - IIO tools'
-	@echo '  lguest     - a minimal 32-bit x86 hypervisor'
-	@echo '  perf       - Linux performance measurement and analysis tool'
-	@echo '  selftests  - various kernel selftests'
-	@echo '  spi        - spi tools'
-	@echo '  turbostat  - Intel CPU idle stats and freq reporting tool'
-	@echo '  usb        - USB testing tools'
-	@echo '  virtio     - vhost test module'
-	@echo '  net        - misc networking tools'
-	@echo '  vm         - misc vm tools'
+	@echo '  acpi                   - ACPI tools'
+	@echo '  cgroup                 - cgroup tools'
+	@echo '  cpupower               - a tool for all things x86 CPU power'
+	@echo '  firewire               - the userspace part of nosy, an IEEE-1394 traffic sniffer'
+	@echo '  freefall               - laptop accelerometer program for disk protection'
+	@echo '  hv                     - tools used when in Hyper-V clients'
+	@echo '  iio                    - IIO tools'
+	@echo '  lguest                 - a minimal 32-bit x86 hypervisor'
+	@echo '  net                    - misc networking tools'
+	@echo '  perf                   - Linux performance measurement and analysis tool'
+	@echo '  selftests              - various kernel selftests'
+	@echo '  spi                    - spi tools'
+	@echo '  tmon                   - thermal monitoring and tuning tool'
+	@echo '  turbostat              - Intel CPU idle stats and freq reporting tool'
+	@echo '  usb                    - USB testing tools'
+	@echo '  virtio                 - vhost test module'
+	@echo '  vm                     - misc vm tools'
 	@echo '  x86_energy_perf_policy - Intel energy policy tool'
-	@echo '  tmon       - thermal monitoring and tuning tool'
-	@echo '  freefall   - laptop accelerometer program for disk protection'
 	@echo ''
 	@echo 'You can do:'
 	@echo ' $$ make -C tools/ <tool>_install'
@@ -128,6 +128,12 @@ liblockdep_clean:
 libapi_clean:
 	$(call descend,lib/api,clean)
 
+libbpf_clean:
+	$(call descend,lib/bpf,clean)
+
+libsubcmd_clean:
+	$(call descend,lib/subcmd,clean)
+
 perf_clean:
 	$(call descend,$(@:_clean=),clean)
 
@@ -143,9 +149,12 @@ tmon_clean:
 freefall_clean:
 	$(call descend,laptop/freefall,clean)
 
+build_clean:
+	$(call descend,build,clean)
+
 clean: acpi_clean cgroup_clean cpupower_clean hv_clean firewire_clean lguest_clean \
 		perf_clean selftests_clean turbostat_clean spi_clean usb_clean virtio_clean \
 		vm_clean net_clean iio_clean x86_energy_perf_policy_clean tmon_clean \
-		freefall_clean
+		freefall_clean build_clean libbpf_clean libsubcmd_clean liblockdep_clean
 
 .PHONY: FORCE

tools/build/feature/test-all.c

@@ -125,6 +125,10 @@
 # include "test-get_cpuid.c"
 #undef main
 
+#define main main_test_bpf
+# include "test-bpf.c"
+#undef main
+
 int main(int argc, char *argv[])
 {
 	main_test_libpython();
@@ -153,6 +157,7 @@ int main(int argc, char *argv[])
 	main_test_pthread_attr_setaffinity_np();
 	main_test_lzma();
 	main_test_get_cpuid();
+	main_test_bpf();
 
 	return 0;
 }

tools/build/feature/test-bpf.c

@@ -1,9 +1,23 @@
+#include <asm/unistd.h>
 #include <linux/bpf.h>
+#include <unistd.h>
+
+#ifndef __NR_bpf
+# if defined(__i386__)
+#  define __NR_bpf 357
+# elif defined(__x86_64__)
+#  define __NR_bpf 321
+# elif defined(__aarch64__)
+#  define __NR_bpf 280
+#  error __NR_bpf not defined. libbpf does not support your arch.
+# endif
+#endif
 
 int main(void)
 {
 	union bpf_attr attr;
 
+	/* Check fields in attr */
 	attr.prog_type = BPF_PROG_TYPE_KPROBE;
 	attr.insn_cnt = 0;
 	attr.insns = 0;
@@ -14,5 +28,9 @@ int main(void)
 	attr.kern_version = 0;
 
 	attr = attr;
-	return 0;
+	/*
+	 * Test existence of __NR_bpf and BPF_PROG_LOAD.
+	 * This call should fail if we run the testcase.
+	 */
+	return syscall(__NR_bpf, BPF_PROG_LOAD, attr, sizeof(attr));
 }