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Commit ecd380b8 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

Merge tag 'perf-core-for-mingo-4.17-20180319' of... 

Merge tag 'perf-core-for-mingo-4.17-20180319' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

 into perf/core

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

- Fixes for problems experienced with new GCC 8 warnings, that treated
  as errors, broke the build, related to snprintf and casting issues.
  (Arnaldo Carvalho de Melo, Jiri Olsa, Josh Poinboeuf)

- Fix build of new breakpoint 'perf test' entry with clang < 6, noticed
  on fedora 25, 26 and 27 (Arnaldo Carvalho de Melo)

- Workaround problem with symbol resolution in 'perf annotate', using
  the symbol name already present in the objdump output (Arnaldo Carvalho de Melo)

- Document 'perf top --ignore-vmlinux' (Arnaldo Carvalho de Melo)

- Fix out of bounds access on array fd when cnt is 100 in one of the
  'perf test' entries, detected using 'cpptest' (Colin Ian King)

- Add support for the forced leader feature, i.e. 'perf report --group'
  for a group of events not really grouped when scheduled (without using
  {} to enclose the list of events in the command line) in pipe mode,
  e.g.:

    $ perf record -e cycles,instructions -o - kill | perf report --group -i -

- Use right type to access array elements in 'perf probe' (Masami Hiramatsu)

- Update POWER9 vendor events (those described in JSON format) (Sukadev Bhattiprolu)

- Discard head in overwrite_rb_find_range() (Yisheng Xie)

- Avoid setting 'quiet' to 'true' unnecessarily (Yisheng Xie)

Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parents 134933e5 1cd61883

tools/lib/str_error_r.c

+1 −1
Original line number Diff line number Diff line
@@ -22,6 +22,6 @@ char *str_error_r(int errnum, char *buf, size_t buflen) 
{

	int err = strerror_r(errnum, buf, buflen);

	if (err)

		snprintf(buf, buflen, "INTERNAL ERROR: strerror_r(%d, %p, %zd)=%d", errnum, buf, buflen, err);

		snprintf(buf, buflen, "INTERNAL ERROR: strerror_r(%d, [buf], %zd)=%d", errnum, buflen, err);

	return buf;

}

tools/perf/Documentation/perf-c2c.txt

+1 −1
Original line number Diff line number Diff line
@@ -116,7 +116,7 @@ and calls standard perf record command. 
Following perf record options are configured by default:

(check perf record man page for details)



  -W,-d,--sample-cpu

  -W,-d,--phys-data,--sample-cpu



Unless specified otherwise with '-e' option, following events are monitored by

default:

tools/perf/Documentation/perf-top.txt

+3 −0
Original line number Diff line number Diff line
@@ -67,6 +67,9 @@ Default is to monitor all CPUS. 
--vmlinux=<path>::

	Path to vmlinux.  Required for annotation functionality.



--ignore-vmlinux::

	Ignore vmlinux files.



-m <pages>::

--mmap-pages=<pages>::

	Number of mmap data pages (must be a power of two) or size

tools/perf/Makefile.config

+1 −1
Original line number Diff line number Diff line
@@ -75,7 +75,7 @@ endif 
# Disable it on all other architectures in case libdw unwind

# support is detected in system. Add supported architectures

# to the check.

ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm powerpc s390))

ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm arm64 powerpc s390))

  NO_LIBDW_DWARF_UNWIND := 1

endif

tools/perf/arch/arm64/include/arch-tests.h

0 → 100644
+12 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

#ifndef ARCH_TESTS_H

#define ARCH_TESTS_H



#ifdef HAVE_DWARF_UNWIND_SUPPORT

struct thread;

struct perf_sample;

#endif



extern struct test arch_tests[];



#endif