mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-01 06:33:07 +00:00
Code Issues Releases Wiki Activity

perf tests: Make x86 new instructions test optional at build time

Browse source 
The "x86 instruction decoder - new instructions" test takes up space but
is only really useful to developers. Make it optional at build time.

Add variable EXTRA_TESTS which must be defined in order to build perf
with the test.

Example:

  Before:

    $ make -C tools/perf clean >/dev/null
    $ make -C tools/perf >/dev/null
    Makefile.config:650: No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR
    Makefile.config:1149: libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev
      PERF_VERSION = 6.4.rc3.gd15b8c76c964
    $ readelf -SW tools/perf/perf | grep '\.rela.dyn\|.rodata\|\.data.rel.ro'
      [10] .rela.dyn         RELA            000000000002fcb0 02fcb0 0748b0 18   A  6   0  8
      [18] .rodata           PROGBITS        00000000002eb000 2eb000 6bac00 00   A  0   0 32
      [25] .data.rel.ro      PROGBITS        00000000009ea180 9e9180 04b540 00  WA  0   0 32

  After:

    $ make -C tools/perf clean >/dev/null
    $ make -C tools/perf >/dev/null
    Makefile.config:650: No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR
    Makefile.config:1154: libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev
      PERF_VERSION = 6.4.rc3.g4ea9c1569ea4
    $ readelf -SW tools/perf/perf | grep '\.rela.dyn\|.rodata\|\.data.rel.ro'
      [10] .rela.dyn         RELA            000000000002f3c8 02f3c8 036d68 18   A  6   0  8
      [18] .rodata           PROGBITS        00000000002ac000 2ac000 68da80 00   A  0   0 32
      [25] .data.rel.ro      PROGBITS        000000000097d440 97c440 022280 00  WA  0   0 32

Committer notes:

Build with 'make EXTRA_TESTS=1 -C tools/perf O=/tmp/build/perf" and
reproduced the ELF section size differences.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/683fea7c-f5e9-fa20-f96b-f6233ed5d2a7@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2023-06-13 16:22:26 +03:00 committed by Arnaldo Carvalho de Melo
parent 7f911905ff
commit d436373a75
6 changed files with 20 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
tools/perf/Makefile.config
View file

@ -1075,6 +1075,11 @@ ifndef NO_AUXTRACE
endif
endif
ifdef EXTRA_TESTS
$(call detected,CONFIG_EXTRA_TESTS)
CFLAGS += -DHAVE_EXTRA_TESTS
endif
ifndef NO_JVMTI
ifneq (,$(wildcard /usr/sbin/update-java-alternatives))
JDIR=$(shell /usr/sbin/update-java-alternatives -l | head -1 | awk '{print $$3}')

4
tools/perf/Makefile.perf
View file

@ -128,6 +128,10 @@ include ../scripts/utilities.mak
#
# Define BUILD_NONDISTRO to enable building an linking against libbfd and
# libiberty distribution license incompatible libraries.
#
# Define EXTRA_TESTS to enable building extra tests useful mainly to perf
# developers, such as:
# x86 instruction decoder - new instructions test
# As per kernel Makefile, avoid funny character set dependencies
unexport LC_ALL

2
tools/perf/arch/x86/include/arch-tests.h
View file

@ -6,7 +6,9 @@ struct test_suite;
/* Tests */
int test__rdpmc(struct test_suite *test, int subtest);
#ifdef HAVE_EXTRA_TESTS
int test__insn_x86(struct test_suite *test, int subtest);
#endif
int test__intel_pt_pkt_decoder(struct test_suite *test, int subtest);
int test__intel_pt_hybrid_compat(struct test_suite *test, int subtest);
int test__bp_modify(struct test_suite *test, int subtest);

5
tools/perf/arch/x86/tests/Build
View file

@ -4,5 +4,8 @@ perf-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o
perf-y += arch-tests.o
perf-y += sample-parsing.o
perf-y += hybrid.o
perf-$(CONFIG_AUXTRACE) += insn-x86.o intel-pt-test.o
perf-$(CONFIG_AUXTRACE) += intel-pt-test.o
ifeq ($(CONFIG_EXTRA_TESTS),y)
perf-$(CONFIG_AUXTRACE) += insn-x86.o
endif
perf-$(CONFIG_X86_64) += bp-modify.o

4
tools/perf/arch/x86/tests/arch-tests.c
View file

@ -4,7 +4,9 @@
#include "arch-tests.h"
#ifdef HAVE_AUXTRACE_SUPPORT
#ifdef HAVE_EXTRA_TESTS
DEFINE_SUITE("x86 instruction decoder - new instructions", insn_x86);
#endif
static struct test_case intel_pt_tests[] = {
TEST_CASE("Intel PT packet decoder", intel_pt_pkt_decoder),
@ -37,7 +39,9 @@ struct test_suite *arch_tests[] = {
&suite__dwarf_unwind,
#endif
#ifdef HAVE_AUXTRACE_SUPPORT
#ifdef HAVE_EXTRA_TESTS
&suite__insn_x86,
#endif
&suite__intel_pt,
#endif
#if defined(__x86_64__)

1
tools/perf/tests/make
View file

@ -69,6 +69,7 @@ make_clean_all := clean all
make_python_perf_so := $(python_perf_so)
make_debug := DEBUG=1
make_nondistro := BUILD_NONDISTRO=1
make_extra_tests := EXTRA_TESTS=1
make_no_libperl := NO_LIBPERL=1
make_no_libpython := NO_LIBPYTHON=1
make_no_scripts := NO_LIBPYTHON=1 NO_LIBPERL=1