fio: Fix padding properly

[fio.git] / libfio.c

diff --git a/libfio.c b/libfio.c
index 5a996f9cbd6e9f35d09709ad70ff78d3a3365c69..1abf39a84edff09b4cdf571361c6356d7706641f 100644 (file)
--- a/libfio.c
+++ b/libfio.c
@@ -108,8 +108,10 @@ void clear_io_state(struct thread_data *td)
        reset_io_counters(td);
 
        close_files(td);
-       for_each_file(td, f, i)
+       for_each_file(td, f, i) {
                fio_file_clear_done(f);
+               f->file_offset = get_start_offset(td, f);
+       }
 
        /*
         * Set the same seed to get repeatable runs
@@ -297,6 +299,20 @@ int initialize_fio(char *envp[])
 {
        long ps;
 
+       /*
+        * We need these to be properly 64-bit aligned, otherwise we
+        * can run into problems on archs that fault on unaligned fp
+        * access (ARM).
+        */
+       compiletime_assert((offsetof(struct thread_stat, percentile_list) % 8) == 0, "stat percentile_list");
+       compiletime_assert((offsetof(struct thread_stat, total_run_time) % 8) == 0, "total_run_time");
+       compiletime_assert((offsetof(struct thread_stat, total_err_count) % 8) == 0, "total_err_count");
+       compiletime_assert((offsetof(struct thread_stat, latency_percentile) % 8) == 0, "stat latency_percentile");
+       compiletime_assert((offsetof(struct thread_options_pack, zipf_theta) % 8) == 0, "zipf_theta");
+       compiletime_assert((offsetof(struct thread_options_pack, pareto_h) % 8) == 0, "pareto_h");
+       compiletime_assert((offsetof(struct thread_options_pack, percentile_list) % 8) == 0, "percentile_list");
+       compiletime_assert((offsetof(struct thread_options_pack, latency_percentile) % 8) == 0, "latency_percentile");
+
        if (endian_check()) {
                log_err("fio: endianness settings appear wrong.\n");
                log_err("fio: please report this to fio@vger.kernel.org\n");