From 2a07d814747b386feec7d7150fe519feb2a2a5f2 Mon Sep 17 00:00:00 2001 From: Alexey Budankov Date: Tue, 6 Nov 2018 12:03:35 +0300 Subject: tools build feature: Check if libaio is available This will be used by 'perf record' to speed up reading the perf ring buffer. Committer testing: $ make -C tools/perf O=/tmp/build/perf make: Entering directory '/home/acme/git/perf/tools/perf' BUILD: Doing 'make -j8' parallel build Auto-detecting system features: ... dwarf: [ on ] ... dwarf_getlocations: [ on ] ... glibc: [ on ] ... gtk2: [ OFF ] ... libaudit: [ OFF ] ... libbfd: [ OFF ] ... libelf: [ on ] ... libnuma: [ OFF ] ... numa_num_possible_cpus: [ OFF ] ... libperl: [ OFF ] ... libpython: [ OFF ] ... libslang: [ on ] ... libcrypto: [ on ] ... libunwind: [ on ] ... libdw-dwarf-unwind: [ on ] ... zlib: [ on ] ... lzma: [ on ] ... get_cpuid: [ on ] ... bpf: [ on ] ... libaio: [ on ] $ ls -la /tmp/build/perf/feature/test-libaio.* -rwxrwxr-x. 1 acme acme 18296 Nov 26 08:49 /tmp/build/perf/feature/test-libaio.bin -rw-rw-r--. 1 acme acme 1165 Nov 26 08:49 /tmp/build/perf/feature/test-libaio.d -rw-rw-r--. 1 acme acme 0 Nov 26 08:49 /tmp/build/perf/feature/test-libaio.make.output $ $ grep -i aio /tmp/build/perf/FEATURE-DUMP feature-libaio=1 $ Signed-off-by: Alexey Budankov Tested-by: Arnaldo Carvalho de Melo Reviewed-by: Jiri Olsa Acked-by: Namhyung Kim Cc: Alexander Shishkin Cc: Andi Kleen Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/5fcda10c-6c63-68df-383a-c6d9e5d1f918@linux.intel.com [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/build/Makefile.feature | 6 ++++-- tools/build/feature/Makefile | 6 +++++- tools/build/feature/test-all.c | 5 +++++ tools/build/feature/test-libaio.c | 16 ++++++++++++++++ 4 files changed, 30 insertions(+), 3 deletions(-) create mode 100644 tools/build/feature/test-libaio.c (limited to 'tools/build') diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature index 8a123834a2a3..d47b8f73e2e7 100644 --- a/tools/build/Makefile.feature +++ b/tools/build/Makefile.feature @@ -70,7 +70,8 @@ FEATURE_TESTS_BASIC := \ sched_getcpu \ sdt \ setns \ - libopencsd + libopencsd \ + libaio # FEATURE_TESTS_BASIC + FEATURE_TESTS_EXTRA is the complete list # of all feature tests @@ -116,7 +117,8 @@ FEATURE_DISPLAY ?= \ zlib \ lzma \ get_cpuid \ - bpf + bpf \ + libaio # Set FEATURE_CHECK_(C|LD)FLAGS-all for all FEATURE_TESTS features. # If in the future we need per-feature checks/flags for features not diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile index 38c22e122cb0..2dbcc0d00f52 100644 --- a/tools/build/feature/Makefile +++ b/tools/build/feature/Makefile @@ -61,7 +61,8 @@ FILES= \ test-libopencsd.bin \ test-clang.bin \ test-llvm.bin \ - test-llvm-version.bin + test-llvm-version.bin \ + test-libaio.bin FILES := $(addprefix $(OUTPUT),$(FILES)) @@ -297,6 +298,9 @@ $(OUTPUT)test-clang.bin: -include $(OUTPUT)*.d +$(OUTPUT)test-libaio.bin: + $(BUILD) -lrt + ############################### clean: diff --git a/tools/build/feature/test-all.c b/tools/build/feature/test-all.c index 58f01b950195..20cdaa4fc112 100644 --- a/tools/build/feature/test-all.c +++ b/tools/build/feature/test-all.c @@ -174,6 +174,10 @@ # include "test-libopencsd.c" #undef main +#define main main_test_libaio +# include "test-libaio.c" +#undef main + int main(int argc, char *argv[]) { main_test_libpython(); @@ -214,6 +218,7 @@ int main(int argc, char *argv[]) main_test_sdt(); main_test_setns(); main_test_libopencsd(); + main_test_libaio(); return 0; } diff --git a/tools/build/feature/test-libaio.c b/tools/build/feature/test-libaio.c new file mode 100644 index 000000000000..932133c9a265 --- /dev/null +++ b/tools/build/feature/test-libaio.c @@ -0,0 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0 +#include + +int main(void) +{ + struct aiocb aiocb; + + aiocb.aio_fildes = 0; + aiocb.aio_offset = 0; + aiocb.aio_buf = 0; + aiocb.aio_nbytes = 0; + aiocb.aio_reqprio = 0; + aiocb.aio_sigevent.sigev_notify = 1 /*SIGEV_NONE*/; + + return (int)aio_return(&aiocb); +} -- cgit v1.2.3