Merge tag 'perf-tools-2020-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tooling updates from Arnaldo Carvalho de Melo:
 "These are additional changes to the perf tools, on top of what Ingo
  already submitted.

   - Further Intel PT call-trace fixes

   - Improve SELinux docs and tool warnings

   - Fix race at exit in 'perf record' using eventfd.

   - Add missing build tests to the default set of 'make -C tools/perf
     build-test'

   - Sync msr-index.h getting new AMD MSRs to decode and filter in 'perf
     trace'.

   - Fix fallback to libaudit in 'perf trace' for arches not using
     per-arch *.tbl files.

   - Fixes for 'perf ftrace'.

   - Fixes and improvements for the 'perf stat' metrics.

   - Use dummy event to get PERF_RECORD_{FORK,MMAP,etc} while
     synthesizing those metadata events for pre-existing threads.

   - Fix leaks detected using clang tooling.

   - Improvements to PMU event metric testing.

   - Report summary for 'perf stat' interval mode at the end, summing up
     all the intervals.

   - Improve pipe mode, i.e. this now works as expected, continuously
     dumping samples:

        # perf record -g -e raw_syscalls:sys_enter | perf --no-pager script

   - Fixes for event grouping, detecting incompatible groups such as:

        # perf stat -e '{cycles,power/energy-cores/}' -v
        WARNING: group events cpu maps do not match, disabling group:
          anon group { power/energy-cores/, cycles }
            power/energy-cores/: 0
            cycles: 0-7

   - Fixes for 'perf probe': blacklist address checking, number of
     kretprobe instances, etc.

   - JIT processing improvements and fixes plus the addition of a 'perf
     test' entry for the java demangler.

   - Add support for synthesizing first/last level cache, TLB and remove
     access events from HW tracing in the auxtrace code, first to use is
     ARM SPE.

   - Vendor events updates and fixes, including for POWER9 and Intel.

   - Allow using ~/.perfconfig for removing the ',' separators in 'perf
     stat' output.

   - Opt-in support for libpfm4"

* tag 'perf-tools-2020-06-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (120 commits)
  perf tools: Remove some duplicated includes
  perf symbols: Fix kernel maps for kcore and eBPF
  tools arch x86: Sync the msr-index.h copy with the kernel sources
  perf stat: Ensure group is defined on top of the same cpu mask
  perf libdw: Fix off-by 1 relative directory includes
  perf arm-spe: Support synthetic events
  perf auxtrace: Add four itrace options
  perf tools: Move arm-spe-pkt-decoder.h/c to the new dir
  perf test: Initialize memory in dwarf-unwind
  perf tests: Don't tail call optimize in unwind test
  tools compiler.h: Add attribute to disable tail calls
  perf build: Add a LIBPFM4=1 build test entry
  perf tools: Add optional support for libpfm4
  perf tools: Correct license on jsmn JSON parser
  perf jit: Fix inaccurate DWARF line table
  perf jvmti: Remove redundant jitdump line table entries
  perf build: Add NO_SDT=1 to the default set of build tests
  perf build: Add NO_LIBCRYPTO=1 to the default set of build tests
  perf build: Add NO_SYSCALL_TABLE=1 to the build tests
  perf build: Remove libaudit from the default feature checks
  ...

Author: torvalds

tools/arch/x86/include/asm/msr-index.h

@@ -301,6 +301,9 @@
 #define MSR_PP1_ENERGY_STATUS		0x00000641
 #define MSR_PP1_POLICY			0x00000642
 
+#define MSR_AMD_PKG_ENERGY_STATUS	0xc001029b
+#define MSR_AMD_RAPL_POWER_UNIT		0xc0010299
+
 /* Config TDP MSRs */
 #define MSR_CONFIG_TDP_NOMINAL		0x00000648
 #define MSR_CONFIG_TDP_LEVEL_1		0x00000649

tools/build/Makefile.feature

@@ -40,7 +40,6 @@ FEATURE_TESTS_BASIC :=                  \
         glibc                           \
         gtk2                            \
         gtk2-infobar                    \
-        libaudit                        \
         libbfd                          \
         libcap                          \
         libelf                          \
@@ -112,7 +111,6 @@ FEATURE_DISPLAY ?=              \
          dwarf_getlocations     \
          glibc                  \
          gtk2                   \
-         libaudit               \
          libbfd                 \
          libcap                 \
          libelf                 \

tools/build/feature/Makefile

@@ -91,7 +91,7 @@ __BUILDXX = $(CXX) $(CXXFLAGS) -MD -Wall -Werror -o $@ $(patsubst %.bin,%.cpp,$(
 ###############################
 
 $(OUTPUT)test-all.bin:
-	$(BUILD) -fstack-protector-all -O2 -D_FORTIFY_SOURCE=2 -ldw -lelf -lnuma -lelf -laudit -I/usr/include/slang -lslang $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null) $(FLAGS_PERL_EMBED) $(FLAGS_PYTHON_EMBED) -DPACKAGE='"perf"' -lbfd -ldl -lz -llzma
+	$(BUILD) -fstack-protector-all -O2 -D_FORTIFY_SOURCE=2 -ldw -lelf -lnuma -lelf -I/usr/include/slang -lslang $(shell $(PKG_CONFIG) --libs --cflags gtk+-2.0 2>/dev/null) $(FLAGS_PERL_EMBED) $(FLAGS_PYTHON_EMBED) -DPACKAGE='"perf"' -lbfd -ldl -lz -llzma
 
 $(OUTPUT)test-hello.bin:
 	$(BUILD)

tools/build/feature/test-all.c

@@ -74,10 +74,6 @@
 # include "test-libunwind.c"
 #undef main
 
-#define main main_test_libaudit
-# include "test-libaudit.c"
-#undef main
-
 #define main main_test_libslang
 # include "test-libslang.c"
 #undef main
@@ -208,7 +204,6 @@ int main(int argc, char *argv[])
 	main_test_libelf_gelf_getnote();
 	main_test_libelf_getshdrstrndx();
 	main_test_libunwind();
-	main_test_libaudit();
 	main_test_libslang();
 	main_test_gtk2(argc, argv);
 	main_test_gtk2_infobar(argc, argv);

tools/include/linux/compiler-gcc.h

@@ -27,6 +27,18 @@
 #define  __pure		__attribute__((pure))
 #endif
 #define  noinline	__attribute__((noinline))
+#ifdef __has_attribute
+#if __has_attribute(disable_tail_calls)
+#define __no_tail_call	__attribute__((disable_tail_calls))
+#endif
+#endif
+#ifndef __no_tail_call
+#if GCC_VERSION > 40201
+#define __no_tail_call	__attribute__((optimize("no-optimize-sibling-calls")))
+#else
+#define __no_tail_call
+#endif
+#endif
 #ifndef __packed
 #define __packed	__attribute__((packed))
 #endif

tools/include/linux/compiler.h

@@ -47,6 +47,9 @@
 #ifndef noinline
 #define noinline
 #endif
+#ifndef __no_tail_call
+#define __no_tail_call
+#endif
 
 /* Are two types/vars the same type (ignoring qualifiers)? */
 #ifndef __same_type

tools/perf/Documentation/itrace.txt

@@ -1,5 +1,5 @@
 		i	synthesize instructions events
-		b	synthesize branches events
+		b	synthesize branches events (branch misses for Arm SPE)
 		c	synthesize branches events (calls only)
 		r	synthesize branches events (returns only)
 		x	synthesize transactions events
@@ -9,6 +9,10 @@
 			of aux-output (refer to perf record)
 		e	synthesize error events
 		d	create a debug log
+		f	synthesize first level cache events
+		m	synthesize last level cache events
+		t	synthesize TLB events
+		a	synthesize remote access events
 		g	synthesize a call chain (use with i or x)
 		G	synthesize a call chain on existing event records
 		l	synthesize last branch entries (use with i or x)

tools/perf/Documentation/perf-c2c.txt

@@ -40,7 +40,7 @@ RECORD OPTIONS
 --------------
 -e::
 --event=::
-	Select the PMU event. Use 'perf mem record -e list'
+	Select the PMU event. Use 'perf c2c record -e list'
 	to list available events.
 
 -v::

tools/perf/Documentation/perf-config.txt

@@ -667,6 +667,11 @@ convert.*::
 		Limit the size of ordered_events queue, so we could control
 		allocation size of perf data files without proper finished
 		round events.
+stat.*::
+
+	stat.big-num::
+		(boolean) Change the default for "--big-num". To make
+		"--no-big-num" the default, set "stat.big-num=false".
 
 intel-pt.*::
 

tools/perf/Documentation/perf-intel-pt.txt

@@ -687,7 +687,7 @@ The v4.2 kernel introduced support for a context switch metadata event,
 PERF_RECORD_SWITCH, which allows unprivileged users to see when their processes
 are scheduled out and in, just not by whom, which is left for the
 PERF_RECORD_SWITCH_CPU_WIDE, that is only accessible in system wide context,
-which in turn requires CAP_SYS_ADMIN.
+which in turn requires CAP_PERFMON or CAP_SYS_ADMIN.
 
 Please see the 45ac1403f564 ("perf: Add PERF_RECORD_SWITCH to indicate context
 switches") commit, that introduces these metadata events for further info.