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Commit 97d5f2e9ee12 ("tools api fs: More thread safety for global
filesystem variables") introduces pthread_once, so the libpthread
should be added at link time, or we'll meet the following compile
error when 'make -C tools/mm':
gcc -Wall -Wextra -I../lib/ -o page-types page-types.c ../lib/api/libapi.a
~/linux/tools/lib/api/fs/fs.c:146: undefined reference to `pthread_once'
~/linux/tools/lib/api/fs/fs.c:147: undefined reference to `pthread_once'
~/linux/tools/lib/api/fs/fs.c:148: undefined reference to `pthread_once'
~/linux/tools/lib/api/fs/fs.c:149: undefined reference to `pthread_once'
~/linux/tools/lib/api/fs/fs.c:150: undefined reference to `pthread_once'
/usr/bin/ld: ../lib/api/libapi.a(libapi-in.o):~/linux/tools/lib/api/fs/fs.c:151:
more undefined references to `pthread_once' follow
collect2: error: ld returned 1 exit status
make: *** [Makefile:22: page-types] Error 1
Link: https://lkml.kernel.org/r/20230831034205.2376653-1-xiexiuqi@huaweicloud.com
Fixes: 97d5f2e9ee12 ("tools api fs: More thread safety for global filesystem variables")
Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Right now there is no way to provide additional cflags/ldflags when
building tools/vm binaries. And using eg. make CFLAGS=<options> will
override the CFLAGS being set in the Makefile, making the build fail since
it requires the include of the ../lib dir (for libapi).
This change then allows you to specify:
CFLAGS=<options> LDFLAGS=<options> make V=1 -C tools/vm
And the options will be correctly appended as can be seen from the
make output.
Link: https://lkml.kernel.org/r/20230116224921.4106324-1-herton@redhat.com
Signed-off-by: Herton R. Krzesinski <herton@redhat.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Justin Forbes <jforbes@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Scott Weaver <scweaver@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Rename tools/vm to tools/mm for being more consistent with the code and
documentation directories, and won't be confused with virtual machines.
Link: https://lkml.kernel.org/r/20230103180754.129637-4-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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