The quilt patch titled Subject: tools/mm: fix undefined reference to pthread_once has been removed from the -mm tree. Its filename was tools-mm-fix-undefined-reference-to-pthread_once.patch This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Xie XiuQi <xiexiuqi@xxxxxxxxxx> Subject: tools/mm: fix undefined reference to pthread_once Date: Thu, 31 Aug 2023 11:42:05 +0800 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@xxxxxxxxxxxxxxx Fixes: 97d5f2e9ee12 ("tools api fs: More thread safety for global filesystem variables") Signed-off-by: Xie XiuQi <xiexiuqi@xxxxxxxxxx> Acked-by: Ian Rogers <irogers@xxxxxxxxxx> Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- tools/mm/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/tools/mm/Makefile~tools-mm-fix-undefined-reference-to-pthread_once +++ a/tools/mm/Makefile @@ -8,8 +8,8 @@ TARGETS=page-types slabinfo page_owner_s LIB_DIR = ../lib/api LIBS = $(LIB_DIR)/libapi.a -CFLAGS += -Wall -Wextra -I../lib/ -LDFLAGS += $(LIBS) +CFLAGS += -Wall -Wextra -I../lib/ -pthread +LDFLAGS += $(LIBS) -pthread all: $(TARGETS) _ Patches currently in -mm which might be from xiexiuqi@xxxxxxxxxx are