Add support for async IO verification offload

[fio.git] / fio.h

diff --git a/fio.h b/fio.h
index b19101c20a4924892610bd78b0f6d645f3b93e9b..fb70b465bec4e1da83a9359b8d2dbe39d84d5c24 100644 (file)
--- a/fio.h
+++ b/fio.h
@@ -174,6 +174,7 @@ struct thread_options {
        unsigned int verify_pattern;
        unsigned int verify_pattern_bytes;
        unsigned int verify_fatal;
        unsigned int verify_pattern;
        unsigned int verify_pattern_bytes;
        unsigned int verify_fatal;

+       unsigned int verify_async;

        unsigned int use_thread;
        unsigned int unlink;
        unsigned int do_disk_util;
        unsigned int use_thread;
        unsigned int unlink;
        unsigned int do_disk_util;


@@ -209,6 +210,8 @@ struct thread_options {
        unsigned int numjobs;
        os_cpu_mask_t cpumask;
        unsigned int cpumask_set;
        unsigned int numjobs;
        os_cpu_mask_t cpumask;
        unsigned int cpumask_set;

+       os_cpu_mask_t verify_cpumask;
+       unsigned int verify_cpumask_set;

        unsigned int iolog;
        unsigned int rwmixcycle;
        unsigned int rwmix[2];
        unsigned int iolog;
        unsigned int rwmixcycle;
        unsigned int rwmix[2];


@@ -319,6 +322,17 @@ struct thread_data {
        struct flist_head io_u_freelist;
        struct flist_head io_u_busylist;
        struct flist_head io_u_requeues;
        struct flist_head io_u_freelist;
        struct flist_head io_u_busylist;
        struct flist_head io_u_requeues;

+       pthread_mutex_t io_u_lock;
+       pthread_cond_t free_cond;
+
+       /*
+        * async verify offload
+        */
+       struct flist_head verify_list;
+       pthread_t *verify_threads;
+       unsigned int nr_verify_threads;
+       pthread_cond_t verify_cond;
+       int verify_thread_exit;

 
        /*
         * Rate state
 
        /*
         * Rate state


@@ -661,4 +675,26 @@ static inline int is_power_of_2(unsigned int val)
        return (val != 0 && ((val & (val - 1)) == 0));
 }
 
        return (val != 0 && ((val & (val - 1)) == 0));
 }
 

+/*
+ * We currently only need to do locking if we have verifier threads
+ * accessing our internal structures too
+ */
+static inline void td_io_u_lock(struct thread_data *td)
+{
+       if (td->o.verify_async)
+               pthread_mutex_lock(&td->io_u_lock);
+}
+
+static inline void td_io_u_unlock(struct thread_data *td)
+{
+       if (td->o.verify_async)
+               pthread_mutex_unlock(&td->io_u_lock);
+}
+
+static inline void td_io_u_free_notify(struct thread_data *td)
+{
+       if (td->o.verify_async)
+               pthread_cond_signal(&td->free_cond);
+}
+

 #endif
 #endif