Commit 2a07d814 authored by Alexey Budankov's avatar Alexey Budankov Committed by Arnaldo Carvalho de Melo

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: default avatarAlexey Budankov <alexey.budankov@linux.intel.com>
Tested-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Reviewed-by: default avatarJiri Olsa <jolsa@redhat.com>
Acked-by: default avatarNamhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/5fcda10c-6c63-68df-383a-c6d9e5d1f918@linux.intel.com
[ split from a larger patch ]
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 1c6f709b
......@@ -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
......
......@@ -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:
$(BUILD) -lrt
###############################
clean:
......
......@@ -174,6 +174,10 @@
# include "test-libopencsd.c"
#undef main
#define main main_test_libaio
# include "test-libaio.c"
#undef main
int main(int argc, char *argv[])
{
main_test_libpython();
......@@ -214,6 +218,7 @@ int main(int argc, char *argv[])
main_test_sdt();
main_test_setns();
main_test_libopencsd();
main_test_libaio();
return 0;
}
// SPDX-License-Identifier: GPL-2.0
#include <aio.h>
int main(void)
{
struct aiocb aiocb;
aiocb.aio_fildes = 0;
aiocb.aio_offset = 0;
aiocb.aio_buf = 0;
aiocb.aio_nbytes = 0;
aiocb.aio_reqprio = 0;
aiocb.aio_sigevent.sigev_notify = 1 /*SIGEV_NONE*/;
return (int)aio_return(&aiocb);
}
......@@ -365,6 +365,12 @@ ifeq ($(feature-glibc), 1)
CFLAGS += -DHAVE_GLIBC_SUPPORT
endif
ifeq ($(feature-libaio), 1)
ifndef NO_AIO
CFLAGS += -DHAVE_AIO_SUPPORT
endif
endif
ifdef NO_DWARF
NO_LIBDW_DWARF_UNWIND := 1
endif
......
......@@ -101,8 +101,13 @@ include ../scripts/utilities.mak
# Define LIBCLANGLLVM if you DO want builtin clang and llvm support.
# When selected, pass LLVM_CONFIG=/path/to/llvm-config to `make' if
# llvm-config is not in $PATH.
#
# Define NO_CORESIGHT if you do not want support for CoreSight trace decoding.
#
# Define NO_AIO if you do not want support of Posix AIO based trace
# streaming for record mode. Currently Posix AIO trace streaming is
# supported only when linking with glibc.
#
# As per kernel Makefile, avoid funny character set dependencies
unexport LC_ALL
......
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