diff options
Diffstat (limited to 'block/blktrace.c')
| -rw-r--r-- | block/blktrace.c | 40 |
1 files changed, 25 insertions, 15 deletions
diff --git a/block/blktrace.c b/block/blktrace.c index 630f167f824..1b2267c798b 100644 --- a/block/blktrace.c +++ b/block/blktrace.c @@ -37,7 +37,7 @@ static int __read_mostly blk_tracer_enabled; static struct tracer_opt blk_tracer_opts[] = { /* Default disable the minimalistic output */ - { TRACER_OPT(blk_classic, TRACE_BLK_OPT_CLASSIC ) }, + { TRACER_OPT(blk_classic, TRACE_BLK_OPT_CLASSIC) }, { } }; @@ -169,7 +169,8 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes, pid_t pid; int cpu, pc = 0; - if (unlikely(bt->trace_state != Blktrace_running || !blk_tracer_enabled)) + if (unlikely(bt->trace_state != Blktrace_running || + !blk_tracer_enabled)) return; what |= ddir_act[rw & WRITE]; @@ -192,7 +193,7 @@ static void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes, sizeof(*t) + pdu_len, &flags); if (!event) return; - + ent = ring_buffer_event_data(event); t = (struct blk_io_trace *)ent; pc = preempt_count(); @@ -234,7 +235,7 @@ record_it: if (blk_tr) { ring_buffer_unlock_commit(blk_tr->buffer, event, flags); if (pid != 0 && - (blk_tracer_flags.val & TRACE_BLK_OPT_CLASSIC) == 0 && + !(blk_tracer_flags.val & TRACE_BLK_OPT_CLASSIC) && (trace_flags & TRACE_ITER_STACKTRACE) != 0) __trace_stack(blk_tr, NULL, flags, 5, pc); trace_wake_up(); @@ -955,19 +956,27 @@ static void blk_unregister_tracepoints(void) static void fill_rwbs(char *rwbs, const struct blk_io_trace *t) { - int i = 0; + int i = 0; - if (t->action & BLK_TC_DISCARD) rwbs[i++] = 'D'; - else if (t->action & BLK_TC_WRITE) rwbs[i++] = 'W'; - else if (t->bytes) rwbs[i++] = 'R'; - else rwbs[i++] = 'N'; + if (t->action & BLK_TC_DISCARD) + rwbs[i++] = 'D'; + else if (t->action & BLK_TC_WRITE) + rwbs[i++] = 'W'; + else if (t->bytes) + rwbs[i++] = 'R'; + else + rwbs[i++] = 'N'; - if (t->action & BLK_TC_AHEAD) rwbs[i++] = 'A'; - if (t->action & BLK_TC_BARRIER) rwbs[i++] = 'B'; - if (t->action & BLK_TC_SYNC) rwbs[i++] = 'S'; - if (t->action & BLK_TC_META) rwbs[i++] = 'M'; + if (t->action & BLK_TC_AHEAD) + rwbs[i++] = 'A'; + if (t->action & BLK_TC_BARRIER) + rwbs[i++] = 'B'; + if (t->action & BLK_TC_SYNC) + rwbs[i++] = 'S'; + if (t->action & BLK_TC_META) + rwbs[i++] = 'M'; - rwbs[i] = '\0'; + rwbs[i] = '\0'; } static inline @@ -1049,7 +1058,8 @@ static int blk_log_generic(struct trace_seq *s, const struct trace_entry *ent) return trace_seq_printf(s, "[%s]\n", cmd); } -static int blk_log_with_error(struct trace_seq *s, const struct trace_entry *ent) +static int blk_log_with_error(struct trace_seq *s, + const struct trace_entry *ent) { if (t_sec(ent)) return trace_seq_printf(s, "%llu + %u [%d]\n", t_sector(ent), |