drivers/s390/cio/qdio_perf.h

   1 /*
   2  *  drivers/s390/cio/qdio_perf.h
   3  *
   4  *  Copyright IBM Corp. 2008
   5  *
   6  *  Author: Jan Glauber (jang@linux.vnet.ibm.com)
   7  */
   8 #ifndef QDIO_PERF_H
   9 #define QDIO_PERF_H
  10
  11 #include <linux/types.h>
  12 #include <asm/atomic.h>
  13
  14 struct qdio_perf_stats {
  15         /* interrupt handler calls */
  16         atomic_long_t qdio_int;
  17         atomic_long_t pci_int;
  18         atomic_long_t thin_int;
  19
  20         /* tasklet runs */
  21         atomic_long_t tasklet_inbound;
  22         atomic_long_t tasklet_outbound;
  23         atomic_long_t tasklet_thinint;
  24         atomic_long_t tasklet_thinint_loop;
  25         atomic_long_t thinint_inbound;
  26         atomic_long_t thinint_inbound_loop;
  27         atomic_long_t thinint_inbound_loop2;
  28
  29         /* signal adapter calls */
  30         atomic_long_t siga_out;
  31         atomic_long_t siga_in;
  32         atomic_long_t siga_sync;
  33
  34         /* misc */
  35         atomic_long_t inbound_handler;
  36         atomic_long_t outbound_handler;
  37         atomic_long_t fast_requeue;
  38         atomic_long_t outbound_target_full;
  39
  40         /* for debugging */
  41         atomic_long_t debug_tl_out_timer;
  42         atomic_long_t debug_stop_polling;
  43         atomic_long_t debug_eqbs_all;
  44         atomic_long_t debug_eqbs_incomplete;
  45         atomic_long_t debug_sqbs_all;
  46         atomic_long_t debug_sqbs_incomplete;
  47 };
  48
  49 extern struct qdio_perf_stats perf_stats;
  50 extern int qdio_performance_stats;
  51
  52 static inline void qdio_perf_stat_inc(atomic_long_t *count)
  53 {
  54         if (qdio_performance_stats)
  55                 atomic_long_inc(count);
  56 }
  57
  58 int qdio_setup_perf_stats(void);
  59 void qdio_remove_perf_stats(void);
  60
  61 #endif