From: Sam Protsenko <semen.protsenko@xxxxxxxxxx> Subject: include/linux/notifier.h: SRCU: fix ctags ctags indexing ("make tags" command) throws this warning: ctags: Warning: include/linux/notifier.h:125: null expansion of name pattern "\1" This is the result of DEFINE_PER_CPU() macro expansion. Fix that by getting rid of line break. Similar fix was already done in commit 25528213fe9f ("tags: Fix DEFINE_PER_CPU expansions"), but this one probably wasn't noticed. Link: http://lkml.kernel.org/r/20181030202808.28027-1-semen.protsenko@xxxxxxxxxx Fixes: 9c80172b902d ("kernel/SRCU: provide a static initializer") Signed-off-by: Sam Protsenko <semen.protsenko@xxxxxxxxxx> Cc: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> Cc: Andy Shevchenko <andy.shevchenko@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/notifier.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/include/linux/notifier.h~kernel-srcu-fix-ctags +++ a/include/linux/notifier.h @@ -122,8 +122,7 @@ extern void srcu_init_notifier_head(stru #ifdef CONFIG_TREE_SRCU #define _SRCU_NOTIFIER_HEAD(name, mod) \ - static DEFINE_PER_CPU(struct srcu_data, \ - name##_head_srcu_data); \ + static DEFINE_PER_CPU(struct srcu_data, name##_head_srcu_data); \ mod struct srcu_notifier_head name = \ SRCU_NOTIFIER_INIT(name, name##_head_srcu_data) _