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| author | Oleg Nesterov <oleg@redhat.com> | 2019-04-23 17:21:02 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.ibm.com> | 2019-05-28 09:05:23 -0700 |
| commit | 2bf1acc299c9757932ef8c6edfaacca6d08302b1 (patch) | |
| tree | 1aba9a4282b3f6ca1dfb674239635b36fe2ad589 | |
| parent | 95bf33b55ff4465399bad843f1d8d618c8baf1f3 (diff) | |
| download | linux-2bf1acc299c9757932ef8c6edfaacca6d08302b1.tar.gz linux-2bf1acc299c9757932ef8c6edfaacca6d08302b1.tar.bz2 linux-2bf1acc299c9757932ef8c6edfaacca6d08302b1.zip | |
uprobes: Use DEFINE_STATIC_PERCPU_RWSEM() to initialize dup_mmap_sem
Use DEFINE_STATIC_PERCPU_RWSEM() to initialize dup_mmap_sem.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
| -rw-r--r-- | kernel/events/uprobes.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index 78f61bfc6b79..97c367f0a9aa 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -46,7 +46,7 @@ static DEFINE_SPINLOCK(uprobes_treelock); /* serialize rbtree access */ static struct mutex uprobes_mmap_mutex[UPROBES_HASH_SZ]; #define uprobes_mmap_hash(v) (&uprobes_mmap_mutex[((unsigned long)(v)) % UPROBES_HASH_SZ]) -static struct percpu_rw_semaphore dup_mmap_sem; +DEFINE_STATIC_PERCPU_RWSEM(dup_mmap_sem); /* Have a copy of original instruction */ #define UPROBE_COPY_INSN 0 @@ -2302,7 +2302,5 @@ void __init uprobes_init(void) for (i = 0; i < UPROBES_HASH_SZ; i++) mutex_init(&uprobes_mmap_mutex[i]); - BUG_ON(percpu_init_rwsem(&dup_mmap_sem)); - BUG_ON(register_die_notifier(&uprobe_exception_nb)); } |