numam-dpdk/app/test/get-coremask.sh

#! /bin/sh -e
# SPDX-License-Identifier: BSD-3-Clause
# Copyright(c) 2019 Intel Corporation

if [ "$(uname)" = "Linux" ] ; then
	cat /sys/devices/system/cpu/present
elif [ "$(uname)" = "FreeBSD" ] ; then
	ncpus=$(/sbin/sysctl -n hw.ncpu)
	echo 0-$(expr $ncpus - 1)
else
# fallback
	echo 0-3
fi
app/test: remove meson dependency on file in /sys Meson versions 0.52 and 0.53 are being overly smart and detecting the path "/sys/devices/system/cpu/present" in the call to cat in app/test/meson.build and then adding it as a dependency to the build configuration. This causes issues on systems where the timestamp of that file always returns the current time, since it means that the build.ninja file is always out of date, and therefore needs to be rebuilt. We can fix this by just using a simple shell script to return the coremask appropriately for BSD and Linux, and removing that code logic from meson - thereby hiding the use of the /sys file. Fixes: c70622ac6f72 ("test: detect number of cores with meson") Cc: stable@dpdk.org Signed-off-by: Bruce Richardson <bruce.richardson@intel.com> 2020-01-20 12:22:18 +00:00			`#! /bin/sh -e`
			`# SPDX-License-Identifier: BSD-3-Clause`
			`# Copyright(c) 2019 Intel Corporation`

			`if [ "$(uname)" = "Linux" ] ; then`
			`cat /sys/devices/system/cpu/present`
			`elif [ "$(uname)" = "FreeBSD" ] ; then`
			`ncpus=$(/sbin/sysctl -n hw.ncpu)`
			`echo 0-$(expr $ncpus - 1)`
			`else`
			`# fallback`
			`echo 0-3`
			`fi`