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Subject[PATCH 2/4] trace_workqueue: Remove cpu_workqueue_stats->first_entry
cpu_workqueue_stats->first_entry is useless because we can judge header of cpu
workqueue by:
if (&cpu_workqueue_stats->list == workqueue_cpu_stat(cpu)->list.next)
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
---
kernel/trace/trace_workqueue.c | 4 ----
1 files changed, 0 insertions(+), 4 deletions(-)
diff --git a/kernel/trace/trace_workqueue.c b/kernel/trace/trace_workqueue.c
index 934b27c..f52db53 100644
--- a/kernel/trace/trace_workqueue.c
+++ b/kernel/trace/trace_workqueue.c
@@ -16,8 +16,6 @@
/* A cpu workqueue thread */
struct cpu_workqueue_stats {
struct list_head list;
-/* Useful to know if we print the cpu headers */
- bool first_entry;
int cpu;
pid_t pid;
/* Can be inserted from interrupt or user context, need to be atomic */
@@ -103,8 +101,6 @@ static void probe_workqueue_creation(struct task_struct *wq_thread, int cpu)
cws->pid = wq_thread->pid;

spin_lock_irqsave(&workqueue_cpu_stat(cpu)->lock, flags);
- if (list_empty(&workqueue_cpu_stat(cpu)->list))
- cws->first_entry = true;
list_add_tail(&cws->list, &workqueue_cpu_stat(cpu)->list);
spin_unlock_irqrestore(&workqueue_cpu_stat(cpu)->lock, flags);
}
--
1.5.5.3



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