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Subject[tip:timers/core] timekeeping: Use proper seqcount initializer
Commit-ID:  ce10a5b3954f2514af726beb78ed8d7350c5e41c
Gitweb: https://git.kernel.org/tip/ce10a5b3954f2514af726beb78ed8d7350c5e41c
Author: Bart Van Assche <bvanassche@acm.org>
AuthorDate: Wed, 28 Nov 2018 15:43:09 -0800
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Wed, 5 Dec 2018 11:00:09 +0100

timekeeping: Use proper seqcount initializer

tk_core.seq is initialized open coded, but that misses to initialize the
lockdep map when lockdep is enabled. Lockdep splats involving tk_core seq
consequently lack a name and are hard to read.

Use the proper initializer which takes care of the lockdep map
initialization.

[ tglx: Massaged changelog ]

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: peterz@infradead.org
Cc: tj@kernel.org
Cc: johannes.berg@intel.com
Link: https://lkml.kernel.org/r/20181128234325.110011-12-bvanassche@acm.org

---
kernel/time/timekeeping.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index cd02bd38cf2d..c801e25875a3 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -45,7 +45,9 @@ enum timekeeping_adv_mode {
static struct {
seqcount_t seq;
struct timekeeper timekeeper;
-} tk_core ____cacheline_aligned;
+} tk_core ____cacheline_aligned = {
+ .seq = SEQCNT_ZERO(tk_core.seq),
+};

static DEFINE_RAW_SPINLOCK(timekeeper_lock);
static struct timekeeper shadow_timekeeper;
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