mm/mmap_lock.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #define CREATE_TRACE_POINTS
   3 #include <trace/events/mmap_lock.h>
   4
   5 #include <linux/mm.h>
   6 #include <linux/cgroup.h>
   7 #include <linux/memcontrol.h>
   8 #include <linux/mmap_lock.h>
   9 #include <linux/mutex.h>
  10 #include <linux/percpu.h>
  11 #include <linux/rcupdate.h>
  12 #include <linux/smp.h>
  13 #include <linux/trace_events.h>
  14 #include <linux/local_lock.h>
  15
  16 EXPORT_TRACEPOINT_SYMBOL(mmap_lock_start_locking);
  17 EXPORT_TRACEPOINT_SYMBOL(mmap_lock_acquire_returned);
  18 EXPORT_TRACEPOINT_SYMBOL(mmap_lock_released);
  19
  20 #ifdef CONFIG_TRACING
  21 /*
  22  * Trace calls must be in a separate file, as otherwise there's a circular
  23  * dependency between linux/mmap_lock.h and trace/events/mmap_lock.h.
  24  */
  25
  26 void __mmap_lock_do_trace_start_locking(struct mm_struct *mm, bool write)
  27 {
  28         trace_mmap_lock_start_locking(mm, write);
  29 }
  30 EXPORT_SYMBOL(__mmap_lock_do_trace_start_locking);
  31
  32 void __mmap_lock_do_trace_acquire_returned(struct mm_struct *mm, bool write,
  33                                            bool success)
  34 {
  35         trace_mmap_lock_acquire_returned(mm, write, success);
  36 }
  37 EXPORT_SYMBOL(__mmap_lock_do_trace_acquire_returned);
  38
  39 void __mmap_lock_do_trace_released(struct mm_struct *mm, bool write)
  40 {
  41         trace_mmap_lock_released(mm, write);
  42 }
  43 EXPORT_SYMBOL(__mmap_lock_do_trace_released);
  44 #endif /* CONFIG_TRACING */