Add options to have fio latency profile a device

[fio.git] / libfio.c

diff --git a/libfio.c b/libfio.c
index b48d7c27c07d1dbcc325d619c7549d09a16baae6..7f36514725738b1f2cb56cc292a366c443137c76 100644 (file)
--- a/libfio.c
+++ b/libfio.c
@@ -41,8 +41,8 @@ FLIST_HEAD(disk_list);
 
 unsigned long arch_flags = 0;
 
-uintptr_t page_mask;
-uintptr_t page_size;
+uintptr_t page_mask = 0;
+uintptr_t page_size = 0;
 
 static const char *fio_os_strings[os_nr] = {
        "Invalid",
@@ -75,6 +75,7 @@ static const char *fio_arch_strings[arch_nr] = {
 static void reset_io_counters(struct thread_data *td)
 {
        int ddir;
+
        for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
                td->stat_io_bytes[ddir] = 0;
                td->this_io_bytes[ddir] = 0;
@@ -82,15 +83,17 @@ static void reset_io_counters(struct thread_data *td)
                td->this_io_blocks[ddir] = 0;
                td->rate_bytes[ddir] = 0;
                td->rate_blocks[ddir] = 0;
+               td->io_issues[ddir] = 0;
        }
        td->zone_bytes = 0;
 
        td->last_was_sync = 0;
+       td->rwmix_issues = 0;
 
        /*
         * reset file done count if we are to start over
         */
-       if (td->o.time_based || td->o.loops)
+       if (td->o.time_based || td->o.loops || td->o.do_verify)
                td->nr_done_files = 0;
 }
 
@@ -124,11 +127,14 @@ void reset_all_stats(struct thread_data *td)
                td->io_issues[i] = 0;
                td->ts.total_io_u[i] = 0;
                td->ts.runtime[i] = 0;
+               td->rwmix_issues = 0;
        }
 
        fio_gettime(&tv, NULL);
        memcpy(&td->epoch, &tv, sizeof(tv));
        memcpy(&td->start, &tv, sizeof(tv));
+
+       lat_target_init(td);
 }
 
 void reset_fio_state(void)
@@ -168,6 +174,7 @@ void td_set_runstate(struct thread_data *td, int runstate)
 void fio_terminate_threads(int group_id)
 {
        struct thread_data *td;
+       pid_t pid = getpid();
        int i;
 
        dprint(FD_PROCESS, "terminate group_id=%d\n", group_id);
@@ -182,15 +189,15 @@ void fio_terminate_threads(int group_id)
                        /*
                         * if the thread is running, just let it exit
                         */
-                       if (!td->pid)
+                       if (!td->pid || pid == td->pid)
                                continue;
                        else if (td->runstate < TD_RAMP)
                                kill(td->pid, SIGTERM);
                        else {
                                struct ioengine_ops *ops = td->io_ops;
 
-                               if (ops && (ops->flags & FIO_SIGTERM))
-                                       kill(td->pid, SIGTERM);
+                               if (ops && ops->terminate)
+                                       ops->terminate(td);
                        }
                }
        }
@@ -210,10 +217,10 @@ static int endian_check(void)
        else if (u.c[0] == 0x12)
                le = 1;
 
-#if defined(FIO_LITTLE_ENDIAN)
+#if defined(CONFIG_LITTLE_ENDIAN)
        if (be)
                return 1;
-#elif defined(FIO_BIG_ENDIAN)
+#elif defined(CONFIG_BIG_ENDIAN)
        if (le)
                return 1;
 #else
@@ -236,6 +243,10 @@ int initialize_fio(char *envp[])
                return 1;
        }
 
+#if !defined(CONFIG_GETTIMEOFDAY) && !defined(CONFIG_CLOCK_GETTIME)
+#error "No available clock source!"
+#endif
+
        arch_init(envp);
 
        sinit();