diff options
Diffstat (limited to 'cddl/usr.sbin/dwatch/libexec/io')
| -rw-r--r-- | cddl/usr.sbin/dwatch/libexec/io | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/cddl/usr.sbin/dwatch/libexec/io b/cddl/usr.sbin/dwatch/libexec/io new file mode 100644 index 000000000000..26c58593ead3 --- /dev/null +++ b/cddl/usr.sbin/dwatch/libexec/io @@ -0,0 +1,108 @@ +# -*- tab-width: 4 -*- ;; Emacs +# vi: set filetype=sh tabstop=8 shiftwidth=8 noexpandtab :: Vi/ViM +############################################################ IDENT(1) +# +# $Title: dwatch(8) module for dtrace_io(4) $ +# $Copyright: 2014-2018 Devin Teske. All rights reserved. $ +# $FreeBSD$ +# +############################################################ DESCRIPTION +# +# Display activity related to disk I/O +# +############################################################ PROBE + +case "$PROFILE" in +io) : ${PROBE:=io:::start, io:::done} ;; + *) : ${PROBE:=io:::${PROFILE#io-}} +esac + +############################################################ EVENT ACTION + +[ "$CUSTOM_TEST" ] || EVENT_TEST='this->devinfo.dev_name != ""' + +############################################################ ACTIONS + +exec 9<<EOF +this bufinfo_t bufinfo; +this devinfo_t devinfo; +this int b_flags; +this long bio_length; +this string bio_cmd; +this string bio_flags; +this string device_entry; +this string device_if; +this string device_type; +this string flow; + +inline string append_bio_flag[int flags, int flag] = this->bio_flags = + strjoin(this->bio_flags, + strjoin(this->bio_flags == "" ? "" : (flags & flag) == flag ? "|" : "", + bio_flag_string[flags & flag])); + +$PROBE /(struct bio *)args[0] != NULL/ /* probe ID $ID */ +{${TRACE:+ + printf("<$ID>"); +} + /* + * dtrace_io(4) + */ + this->flow = probefunc == "done" ? "<-" : "->"; + + /* + * struct bio * + */ + this->bufinfo = xlate <bufinfo_t> ((struct bio *)args[0]); + this->bio_cmd = bio_cmd_string[(int)this->bufinfo.b_cmd]; + this->b_flags = (int)this->bufinfo.b_flags; + this->bio_flags = bio_flag_string[this->b_flags & BIO_ERROR]; + this->bio_flags = strjoin(this->bio_flags, this->bufinfo.b_error ? + strjoin(this->bio_flags == "" ? + bio_flag_string[BIO_ERROR] : "", + strjoin("#", lltostr(this->bufinfo.b_error))) : + ""); + append_bio_flag[this->b_flags, BIO_DONE]; + append_bio_flag[this->b_flags, BIO_ONQUEUE]; + append_bio_flag[this->b_flags, BIO_ORDERED]; + append_bio_flag[this->b_flags, BIO_UNMAPPED]; + append_bio_flag[this->b_flags, BIO_TRANSIENT_MAPPING]; + append_bio_flag[this->b_flags, BIO_VLIST]; + this->bio_flags = this->bio_flags == "" ? "-" : this->bio_flags; + this->bio_length = (long)this->bufinfo.b_bcount; + + /* + * struct devstat * + */ + this->devinfo = xlate <devinfo_t> ((struct devstat *)args[1]); + this->device_type = device_type[(int)this->devinfo.dev_type]; + this->device_if = device_if[(int)this->devinfo.dev_type]; + this->device_entry = strjoin(this->devinfo.dev_name, + lltostr(this->devinfo.dev_minor)); +} +EOF +ACTIONS=$( cat <&9 ) +ID=$(( $ID + 1 )) + +############################################################ EVENT DETAILS + +if [ ! "$CUSTOM_DETAILS" ]; then +exec 9<<EOF + /* + * Print disk I/O details + */ + printf("%s %s %s %s %s %s %d byte%s", + this->flow, + this->device_type, + this->device_if, + this->device_entry, + this->bio_cmd, + this->bio_flags, + this->bio_length, + this->bio_length == 1 ? "" : "s"); +EOF +EVENT_DETAILS=$( cat <&9 ) +fi + +################################################################################ +# END +################################################################################ |