diff options
Diffstat (limited to 'btt/trace_plug.c')
| -rw-r--r-- | btt/trace_plug.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/btt/trace_plug.c b/btt/trace_plug.c new file mode 100644 index 0000000..b1925ae --- /dev/null +++ b/btt/trace_plug.c @@ -0,0 +1,47 @@ +/* + * blktrace output analysis: generate a timeline & gather statistics + * + * Copyright (C) 2007 Alan D. Brunelle <Alan.Brunelle@hp.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ +#include "globals.h" + +static __u64 get_nio_up(struct io *u_iop) +{ + __u64 *val = u_iop->pdu; + return be64_to_cpu(*val); +} + +void trace_unplug_io(struct io *u_iop) +{ + unplug_hist_add(u_iop); + dip_unplug(u_iop->t.device, BIT_TIME(u_iop->t.time), get_nio_up(u_iop)); + io_release(u_iop); +} + +void trace_unplug_timer(struct io *ut_iop) +{ + dip_unplug_tm(ut_iop->t.device, BIT_TIME(ut_iop->t.time), + get_nio_up(ut_iop)); + io_release(ut_iop); +} + +void trace_plug(struct io *p_iop) +{ + dip_plug(p_iop->t.device, BIT_TIME(p_iop->t.time)); + io_release(p_iop); +} |