Author: gnn
Date: Wed Jul 11 16:27:02 2012
New Revision: 238366
URL: http://svn.freebsd.org/changeset/base/238366
Log:
Initial commit of an I/O provider for DTrace on FreeBSD.
These probes are most useful when looking into the structures
they provide, which are listed in io.d. For example:
dtrace -n 'io:genunix::start { printf("%d\n", args[0]->bio_bcount); }'
Note that the I/O systems in FreeBSD and Solaris/Illumos are sufficiently
different that there is not a 1:1 mapping from scripts that work
with one to the other.
MFC after: 1 month
Added:
head/sys/kern/dtio_kdtrace.c (contents, props changed)
head/sys/modules/dtrace/dtio/
head/sys/modules/dtrace/dtio/Makefile (contents, props changed)
Modified:
head/cddl/lib/libdtrace/Makefile
head/cddl/lib/libdtrace/io.d
head/sys/kern/subr_devstat.c
head/sys/modules/dtrace/Makefile
head/sys/modules/dtrace/dtraceall/dtraceall.c
head/sys/sys/dtrace_bsd.h
Modified: head/cddl/lib/libdtrace/Makefile
==============================================================================
--- head/cddl/lib/libdtrace/Makefile Wed Jul 11 15:04:20 2012
(r238365)
+++ head/cddl/lib/libdtrace/Makefile Wed Jul 11 16:27:02 2012
(r238366)
@@ -45,6 +45,7 @@ SRCS= dt_aggregate.c \
gmatch.c
DSRCS= errno.d \
+ io.d \
psinfo.d \
signal.d \
unistd.d
Modified: head/cddl/lib/libdtrace/io.d
==============================================================================
--- head/cddl/lib/libdtrace/io.d Wed Jul 11 15:04:20 2012
(r238365)
+++ head/cddl/lib/libdtrace/io.d Wed Jul 11 16:27:02 2012
(r238366)
@@ -27,114 +27,50 @@
#pragma ident "%Z%%M% %I% %E% SMI"
-#pragma D depends_on module unix
#pragma D depends_on provider io
-inline int B_BUSY = B_BUSY;
-#pragma D binding "1.0" B_BUSY
-inline int B_DONE = 0x00000200;
-#pragma D binding "1.0" B_DONE
-inline int B_ERROR = B_ERROR;
-#pragma D binding "1.0" B_ERROR
-inline int B_PAGEIO = B_PAGEIO;
-#pragma D binding "1.0" B_PAGEIO
-inline int B_PHYS = B_PHYS;
-#pragma D binding "1.0" B_PHYS
-inline int B_READ = B_READ;
-#pragma D binding "1.0" B_READ
-inline int B_WRITE = B_WRITE;
-#pragma D binding "1.0" B_WRITE
-inline int B_ASYNC = 0x00000004;
-#pragma D binding "1.0" B_ASYNC
-
-typedef struct bufinfo {
- int b_flags; /* buffer status */
- size_t b_bcount; /* number of bytes */
- caddr_t b_addr; /* buffer address */
- uint64_t b_lblkno; /* block # on device */
- uint64_t b_blkno; /* expanded block # on device */
- size_t b_resid; /* # of bytes not transferred */
- size_t b_bufsize; /* size of allocated buffer */
- caddr_t b_iodone; /* I/O completion routine */
- int b_error; /* expanded error field */
- dev_t b_edev; /* extended device */
-} bufinfo_t;
-
-#pragma D binding "1.0" translator
-translator bufinfo_t < struct buf *B > {
- b_flags = B->b_flags;
- b_addr = B->b_un.b_addr;
- b_bcount = B->b_bcount;
- b_lblkno = B->_b_blkno._f;
- b_blkno = sizeof (long) == 8 ? B->_b_blkno._f : B->_b_blkno._p._l;
- b_resid = B->b_resid;
- b_bufsize = B->b_bufsize;
- b_iodone = (caddr_t)B->b_iodone;
- b_error = B->b_error;
- b_edev = B->b_edev;
-};
-
typedef struct devinfo {
- int dev_major; /* major number */
- int dev_minor; /* minor number */
- int dev_instance; /* instance number */
- string dev_name; /* name of device */
- string dev_statname; /* name of device + instance/minor */
- string dev_pathname; /* pathname of device */
+ int dev_major; /* major number */
+ int dev_minor; /* minor number */
+ int dev_instance; /* instance number */
+ string dev_name; /* name of device */
+ string dev_statname; /* name of device + instance/minor */
+ string dev_pathname; /* pathname of device */
} devinfo_t;
#pragma D binding "1.0" translator
-translator devinfo_t < struct buf *B > {
- dev_major = B->b_dip != NULL ? getmajor(B->b_edev) :
- getmajor(B->b_file->v_vfsp->vfs_dev);
- dev_minor = B->b_dip != NULL ? getminor(B->b_edev) :
- getminor(B->b_file->v_vfsp->vfs_dev);
- dev_instance = B->b_dip == NULL ?
- getminor(B->b_file->v_vfsp->vfs_dev) :
- ((struct dev_info *)B->b_dip)->devi_instance;
- dev_name = B->b_dip == NULL ? "nfs" :
- stringof(`devnamesp[getmajor(B->b_edev)].dn_name);
- dev_statname = strjoin(B->b_dip == NULL ? "nfs" :
- stringof(`devnamesp[getmajor(B->b_edev)].dn_name),
- lltostr(B->b_dip == NULL ? getminor(B->b_file->v_vfsp->vfs_dev) :
- ((struct dev_info *)B->b_dip)->devi_instance == 0 &&
- ((struct dev_info *)B->b_dip)->devi_parent != NULL &&
- ((struct dev_info *)B->b_dip)->devi_parent->devi_node_name ==
- "pseudo" ? getminor(B->b_edev) :
- ((struct dev_info *)B->b_dip)->devi_instance));
- dev_pathname = B->b_dip == NULL ? "<nfs>" :
- ddi_pathname(B->b_dip, getminor(B->b_edev));
+translator devinfo_t < struct devstat *D > {
+ dev_major = D->device_number;
+ dev_minor = D->unit_number;
+ dev_instance = 0;
+ dev_name = stringof(D->device_name);
+ dev_statname = stringof(D->device_name);
+ dev_pathname = stringof(D->device_name);
};
-typedef struct fileinfo {
- string fi_name; /* name (basename of fi_pathname) */
- string fi_dirname; /* directory (dirname of fi_pathname) */
- string fi_pathname; /* full pathname */
- offset_t fi_offset; /* offset within file */
- string fi_fs; /* filesystem */
- string fi_mount; /* mount point of file system */
- int fi_oflags; /* open(2) flags for file descriptor */
-} fileinfo_t;
+typedef struct bufinfo {
+ int b_flags; /* flags */
+ long b_bcount; /* number of bytes */
+ caddr_t b_addr; /* buffer address */
+ uint64_t b_blkno; /* expanded block # on device */
+ uint64_t b_lblkno; /* block # on device */
+ size_t b_resid; /* # of bytes not transferred */
+ size_t b_bufsize; /* size of allocated buffer */
+/* caddr_t b_iodone; I/O completion routine */
+ int b_error; /* expanded error field */
+/* dev_t b_edev; extended device */
+} bufinfo_t;
#pragma D binding "1.0" translator
-translator fileinfo_t < struct buf *B > {
- fi_name = B->b_file == NULL ? "<none>" :
- B->b_file->v_path == NULL ? "<unknown>" :
- basename(cleanpath(B->b_file->v_path));
- fi_dirname = B->b_file == NULL ? "<none>" :
- B->b_file->v_path == NULL ? "<unknown>" :
- dirname(cleanpath(B->b_file->v_path));
- fi_pathname = B->b_file == NULL ? "<none>" :
- B->b_file->v_path == NULL ? "<unknown>" :
- cleanpath(B->b_file->v_path);
- fi_offset = B->b_offset;
- fi_fs = B->b_file == NULL ? "<none>" :
- stringof(B->b_file->v_op->vnop_name);
- fi_mount = B->b_file == NULL ? "<none>" :
- B->b_file->v_vfsp->vfs_vnodecovered == NULL ? "/" :
- B->b_file->v_vfsp->vfs_vnodecovered->v_path == NULL ? "<unknown>" :
- cleanpath(B->b_file->v_vfsp->vfs_vnodecovered->v_path);
- fi_oflags = 0;
+translator bufinfo_t < struct bio *B > {
+ b_flags = B->bio_flags;
+ b_bcount = B->bio_bcount;
+ b_addr = B->bio_data;
+ b_blkno = 0;
+ b_lblkno = 0;
+ b_resid = B->bio_resid;
+ b_bufsize = 0; /* XXX gnn */
+ b_error = B->bio_error;
};
/*
@@ -158,63 +94,17 @@ inline int O_APPEND = 0x0008;
#pragma D binding "1.1" O_APPEND
inline int O_CREAT = 0x0200;
#pragma D binding "1.1" O_CREAT
-inline int O_DSYNC = O_DSYNC;
-#pragma D binding "1.1" O_DSYNC
inline int O_EXCL = 0x0800;
#pragma D binding "1.1" O_EXCL
-inline int O_LARGEFILE = O_LARGEFILE;
-#pragma D binding "1.1" O_LARGEFILE
inline int O_NOCTTY = 0x8000;
#pragma D binding "1.1" O_NOCTTY
inline int O_NONBLOCK = 0x0004;
#pragma D binding "1.1" O_NONBLOCK
inline int O_NDELAY = 0x0004;
#pragma D binding "1.1" O_NDELAY
-inline int O_RSYNC = O_RSYNC;
-#pragma D binding "1.1" O_RSYNC
inline int O_SYNC = 0x0080;
#pragma D binding "1.1" O_SYNC
inline int O_TRUNC = 0x0400;
#pragma D binding "1.1" O_TRUNC
-inline int O_XATTR = O_XATTR;
-#pragma D binding "1.1" O_XATTR
-#pragma D binding "1.1" translator
-translator fileinfo_t < struct file *F > {
- fi_name = F == NULL ? "<none>" :
- F->f_vnode->v_path == NULL ? "<unknown>" :
- basename(cleanpath(F->f_vnode->v_path));
- fi_dirname = F == NULL ? "<none>" :
- F->f_vnode->v_path == NULL ? "<unknown>" :
- dirname(cleanpath(F->f_vnode->v_path));
- fi_pathname = F == NULL ? "<none>" :
- F->f_vnode->v_path == NULL ? "<unknown>" :
- cleanpath(F->f_vnode->v_path);
- fi_offset = F == NULL ? 0 : F->f_offset;
- fi_fs = F == NULL ? "<none>" : stringof(F->f_vnode->v_op->vnop_name);
- fi_mount = F == NULL ? "<none>" :
- F->f_vnode->v_vfsp->vfs_vnodecovered == NULL ? "/" :
- F->f_vnode->v_vfsp->vfs_vnodecovered->v_path == NULL ? "<unknown>" :
- cleanpath(F->f_vnode->v_vfsp->vfs_vnodecovered->v_path);
- fi_oflags = F == NULL ? 0 : F->f_flag + (int)FOPEN;
-};
-inline fileinfo_t fds[int fd] = xlate <fileinfo_t> (
- fd >= 0 && fd < curthread->t_procp->p_user.u_finfo.fi_nfiles ?
- curthread->t_procp->p_user.u_finfo.fi_list[fd].uf_file : NULL);
-
-#pragma D attributes Stable/Stable/Common fds
-#pragma D binding "1.1" fds
-
-#pragma D binding "1.2" translator
-translator fileinfo_t < struct vnode *V > {
- fi_name = V->v_path == NULL ? "<unknown>" :
- basename(cleanpath(V->v_path));
- fi_dirname = V->v_path == NULL ? "<unknown>" :
- dirname(cleanpath(V->v_path));
- fi_pathname = V->v_path == NULL ? "<unknown>" : cleanpath(V->v_path);
- fi_fs = stringof(V->v_op->vnop_name);
- fi_mount = V->v_vfsp->vfs_vnodecovered == NULL ? "/" :
- V->v_vfsp->vfs_vnodecovered->v_path == NULL ? "<unknown>" :
- cleanpath(V->v_vfsp->vfs_vnodecovered->v_path);
-};
Added: head/sys/kern/dtio_kdtrace.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/kern/dtio_kdtrace.c Wed Jul 11 16:27:02 2012
(r238366)
@@ -0,0 +1,232 @@
+/*-
+ * Copyright (c) 2012 Advanced Computing Technologies LLC
+ * Written by George Neville-Neil g...@freebsd.org
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/conf.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+
+#include <sys/dtrace.h>
+#include "../sys/dtrace_bsd.h"
+
+
+static int dtio_unload(void);
+static void dtio_getargdesc(void *, dtrace_id_t, void *,
+ dtrace_argdesc_t *);
+static void dtio_provide(void *, dtrace_probedesc_t *);
+static void dtio_destroy(void *, dtrace_id_t, void *);
+static void dtio_enable(void *, dtrace_id_t, void *);
+static void dtio_disable(void *, dtrace_id_t, void *);
+static void dtio_load(void *);
+
+static dtrace_pattr_t dtio_attr = {
+{ DTRACE_STABILITY_STABLE, DTRACE_STABILITY_STABLE, DTRACE_CLASS_COMMON },
+{ DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_UNKNOWN },
+{ DTRACE_STABILITY_PRIVATE, DTRACE_STABILITY_PRIVATE, DTRACE_CLASS_UNKNOWN },
+{ DTRACE_STABILITY_STABLE, DTRACE_STABILITY_STABLE, DTRACE_CLASS_COMMON },
+{ DTRACE_STABILITY_STABLE, DTRACE_STABILITY_STABLE, DTRACE_CLASS_COMMON },
+};
+
+static char *genunix = "genunix";
+
+/*
+ * Name strings.
+ */
+static char *dtio_start_str = "start";
+static char *dtio_done_str = "done";
+static char *dtio_wait_start_str = "wait-start";
+static char *dtio_wait_done_str = "wait-done";
+
+static dtrace_pops_t dtio_pops = {
+ dtio_provide,
+ NULL,
+ dtio_enable,
+ dtio_disable,
+ NULL,
+ NULL,
+ dtio_getargdesc,
+ NULL,
+ NULL,
+ dtio_destroy
+};
+
+static dtrace_provider_id_t dtio_id;
+
+extern uint32_t dtio_start_id;
+extern uint32_t dtio_done_id;
+extern uint32_t dtio_wait_start_id;
+extern uint32_t dtio_wait_done_id;
+
+static void
+dtio_getargdesc(void *arg, dtrace_id_t id, void *parg,
+ dtrace_argdesc_t *desc)
+{
+ const char *p = NULL;
+
+ switch (desc->dtargd_ndx) {
+ case 0:
+ p = "struct bio *";
+ break;
+ case 1:
+ p = "struct devstat *";
+ break;
+ default:
+ desc->dtargd_ndx = DTRACE_ARGNONE;
+ }
+
+ if (p != NULL)
+ strlcpy(desc->dtargd_native, p, sizeof(desc->dtargd_native));
+}
+
+static void
+dtio_provide(void *arg, dtrace_probedesc_t *desc)
+{
+ if (desc != NULL)
+ return;
+
+ if (dtrace_probe_lookup(dtio_id, genunix, NULL,
+ dtio_start_str) == 0) {
+ dtio_start_id = dtrace_probe_create(dtio_id, genunix, NULL,
+ dtio_start_str, 0, NULL);
+ }
+ if (dtrace_probe_lookup(dtio_id, genunix, NULL, dtio_done_str) == 0) {
+ dtio_done_id = dtrace_probe_create(dtio_id, genunix, NULL,
+ dtio_done_str, 0, NULL);
+ }
+ if (dtrace_probe_lookup(dtio_id, genunix, NULL,
+ dtio_wait_start_str) == 0) {
+ dtio_wait_start_id = dtrace_probe_create(dtio_id, genunix,
+ NULL,
+ dtio_wait_start_str,
+ 0, NULL);
+ }
+ if (dtrace_probe_lookup(dtio_id, genunix, NULL,
+ dtio_wait_done_str) == 0) {
+ dtio_wait_done_id = dtrace_probe_create(dtio_id, genunix, NULL,
+ dtio_wait_done_str, 0, NULL);
+ }
+
+}
+
+static void
+dtio_destroy(void *arg, dtrace_id_t id, void *parg)
+{
+}
+
+static void
+dtio_enable(void *arg, dtrace_id_t id, void *parg)
+{
+ if (id == dtio_start_id)
+ dtrace_io_start_probe =
+ (dtrace_io_start_probe_func_t)dtrace_probe;
+ else if (id == dtio_done_id)
+ dtrace_io_done_probe =
+ (dtrace_io_done_probe_func_t)dtrace_probe;
+ else if (id == dtio_wait_start_id)
+ dtrace_io_wait_start_probe =
+ (dtrace_io_wait_start_probe_func_t)dtrace_probe;
+ else if (id == dtio_wait_done_id)
+ dtrace_io_wait_done_probe =
+ (dtrace_io_wait_done_probe_func_t)dtrace_probe;
+ else
+ printf("dtrace io provider: unknown ID\n");
+
+}
+
+static void
+dtio_disable(void *arg, dtrace_id_t id, void *parg)
+{
+ if (id == dtio_start_id)
+ dtrace_io_start_probe = NULL;
+ else if (id == dtio_done_id)
+ dtrace_io_done_probe = NULL;
+ else if (id == dtio_wait_start_id)
+ dtrace_io_wait_start_probe = NULL;
+ else if (id == dtio_wait_done_id)
+ dtrace_io_wait_done_probe = NULL;
+ else
+ printf("dtrace io provider: unknown ID\n");
+
+}
+
+static void
+dtio_load(void *dummy)
+{
+ if (dtrace_register("io", &dtio_attr, DTRACE_PRIV_USER, NULL,
+ &dtio_pops, NULL, &dtio_id) != 0)
+ return;
+}
+
+
+static int
+dtio_unload()
+{
+ dtrace_io_start_probe = NULL;
+ dtrace_io_done_probe = NULL;
+ dtrace_io_wait_start_probe = NULL;
+ dtrace_io_wait_done_probe = NULL;
+
+ return (dtrace_unregister(dtio_id));
+}
+
+static int
+dtio_modevent(module_t mod __unused, int type, void *data __unused)
+{
+ int error = 0;
+
+ switch (type) {
+ case MOD_LOAD:
+ break;
+
+ case MOD_UNLOAD:
+ break;
+
+ case MOD_SHUTDOWN:
+ break;
+
+ default:
+ error = EOPNOTSUPP;
+ break;
+ }
+
+ return (error);
+}
+
+SYSINIT(dtio_load, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY,
+ dtio_load, NULL);
+SYSUNINIT(dtio_unload, SI_SUB_DTRACE_PROVIDER, SI_ORDER_ANY,
+ dtio_unload, NULL);
+
+DEV_MODULE(dtio, dtio_modevent, NULL);
+MODULE_VERSION(dtio, 1);
+MODULE_DEPEND(dtio, dtrace, 1, 1, 1);
+MODULE_DEPEND(dtio, opensolaris, 1, 1, 1);
Modified: head/sys/kern/subr_devstat.c
==============================================================================
--- head/sys/kern/subr_devstat.c Wed Jul 11 15:04:20 2012
(r238365)
+++ head/sys/kern/subr_devstat.c Wed Jul 11 16:27:02 2012
(r238366)
@@ -29,6 +29,8 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
+#include "opt_kdtrace.h"
+
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
@@ -44,6 +46,54 @@ __FBSDID("$FreeBSD$");
#include <machine/atomic.h>
+#ifdef KDTRACE_HOOKS
+#include <sys/dtrace_bsd.h>
+
+dtrace_io_start_probe_func_t dtrace_io_start_probe;
+dtrace_io_done_probe_func_t dtrace_io_done_probe;
+dtrace_io_wait_start_probe_func_t dtrace_io_wait_start_probe;
+dtrace_io_wait_done_probe_func_t dtrace_io_wait_done_probe;
+
+uint32_t dtio_start_id;
+uint32_t dtio_done_id;
+uint32_t dtio_wait_start_id;
+uint32_t dtio_wait_done_id;
+
+#define DTRACE_DEVSTAT_START() \
+ if (dtrace_io_start_probe != NULL) \
+ (*dtrace_io_start_probe)(dtio_start_id, NULL, ds);
+
+#define DTRACE_DEVSTAT_BIO_START() \
+ if (dtrace_io_start_probe != NULL) \
+ (*dtrace_io_start_probe)(dtio_start_id, bp, ds);
+
+#define DTRACE_DEVSTAT_DONE() \
+ if (dtrace_io_done_probe != NULL) \
+ (*dtrace_io_done_probe)(dtio_done_id, NULL, ds);
+
+#define DTRACE_DEVSTAT_BIO_DONE() \
+ if (dtrace_io_done_probe != NULL) \
+ (*dtrace_io_done_probe)(dtio_done_id, bp, ds);
+
+#define DTRACE_DEVSTAT_WAIT_START() \
+ if (dtrace_io_wait_start_probe != NULL) \
+ (*dtrace_io_wait_start_probe)(dtio_wait_start_id, NULL, ds);
+
+#define DTRACE_DEVSTAT_WAIT_DONE() \
+ if (dtrace_io_wait_done_probe != NULL) \
+ (*dtrace_io_wait_done_probe)(dtio_wait_done_id, NULL, ds);
+
+#else /* ! KDTRACE_HOOKS */
+
+#define DTRACE_DEVSTAT_START()
+
+#define DTRACE_DEVSTAT_DONE()
+
+#define DTRACE_DEVSTAT_WAIT_START()
+
+#define DTRACE_DEVSTAT_WAIT_DONE()
+#endif /* KDTRACE_HOOKS */
+
static int devstat_num_devs;
static long devstat_generation = 1;
static int devstat_version = DEVSTAT_VERSION;
@@ -227,6 +277,7 @@ devstat_start_transaction(struct devstat
}
ds->start_count++;
atomic_add_rel_int(&ds->sequence0, 1);
+ DTRACE_DEVSTAT_START();
}
void
@@ -241,6 +292,7 @@ devstat_start_transaction_bio(struct dev
binuptime(&bp->bio_t0);
devstat_start_transaction(ds, &bp->bio_t0);
+ DTRACE_DEVSTAT_BIO_START();
}
/*
@@ -312,6 +364,7 @@ devstat_end_transaction(struct devstat *
ds->end_count++;
atomic_add_rel_int(&ds->sequence0, 1);
+ DTRACE_DEVSTAT_DONE();
}
void
@@ -334,6 +387,7 @@ devstat_end_transaction_bio(struct devst
devstat_end_transaction(ds, bp->bio_bcount - bp->bio_resid,
DEVSTAT_TAG_SIMPLE, flg, NULL, &bp->bio_t0);
+ DTRACE_DEVSTAT_BIO_DONE();
}
/*
Modified: head/sys/modules/dtrace/Makefile
==============================================================================
--- head/sys/modules/dtrace/Makefile Wed Jul 11 15:04:20 2012
(r238365)
+++ head/sys/modules/dtrace/Makefile Wed Jul 11 16:27:02 2012
(r238366)
@@ -9,6 +9,7 @@ SUBDIR= dtmalloc \
dtrace \
dtraceall \
dtrace_test \
+ dtio \
prototype \
sdt \
systrace
Added: head/sys/modules/dtrace/dtio/Makefile
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/modules/dtrace/dtio/Makefile Wed Jul 11 16:27:02 2012
(r238366)
@@ -0,0 +1,13 @@
+# $FreeBSD$
+
+.PATH: ${.CURDIR}/../../../kern
+
+KMOD= dtio
+SRCS= dtio_kdtrace.c \
+ vnode_if.h
+
+CFLAGS+= -I${.CURDIR}/../../../cddl/compat/opensolaris \
+ -I${.CURDIR}/../../../cddl/contrib/opensolaris/uts/common \
+ -I${.CURDIR}/../../..
+
+.include <bsd.kmod.mk>
Modified: head/sys/modules/dtrace/dtraceall/dtraceall.c
==============================================================================
--- head/sys/modules/dtrace/dtraceall/dtraceall.c Wed Jul 11 15:04:20
2012 (r238365)
+++ head/sys/modules/dtrace/dtraceall/dtraceall.c Wed Jul 11 16:27:02
2012 (r238366)
@@ -65,6 +65,7 @@ MODULE_VERSION(dtraceall, 1);
MODULE_DEPEND(dtraceall, cyclic, 1, 1, 1);
MODULE_DEPEND(dtraceall, opensolaris, 1, 1, 1);
MODULE_DEPEND(dtraceall, dtrace, 1, 1, 1);
+MODULE_DEPEND(dtraceall, dtio, 1, 1, 1);
MODULE_DEPEND(dtraceall, dtmalloc, 1, 1, 1);
MODULE_DEPEND(dtraceall, dtnfscl, 1, 1, 1);
MODULE_DEPEND(dtraceall, dtnfsclient, 1, 1, 1);
Modified: head/sys/sys/dtrace_bsd.h
==============================================================================
--- head/sys/sys/dtrace_bsd.h Wed Jul 11 15:04:20 2012 (r238365)
+++ head/sys/sys/dtrace_bsd.h Wed Jul 11 16:27:02 2012 (r238366)
@@ -38,6 +38,8 @@ struct thread;
struct vattr;
struct vnode;
struct reg;
+struct devstat;
+struct bio;
/*
* Cyclic clock function type definition used to hook the cyclic
@@ -168,6 +170,23 @@ extern dtrace_nfsclient_nfs23_done_probe
extern dtrace_nfsclient_nfs23_done_probe_func_t
dtrace_nfscl_nfs234_done_probe;
+/* IO Provider hooks, really hook into devstat */
+typedef void (*dtrace_io_start_probe_func_t)(uint32_t, struct bio *,
+ struct devstat *);
+extern dtrace_io_start_probe_func_t dtrace_io_start_probe;
+
+typedef void (*dtrace_io_done_probe_func_t)(uint32_t, struct bio *,
+ struct devstat *);
+extern dtrace_io_done_probe_func_t dtrace_io_done_probe;
+
+typedef void (*dtrace_io_wait_start_probe_func_t)(uint32_t, uintptr_t *,
+ struct devstat *);
+extern dtrace_io_wait_start_probe_func_t dtrace_io_wait_start_probe;
+
+typedef void (*dtrace_io_wait_done_probe_func_t)(uint32_t, uintptr_t *,
+ struct devstat *);
+extern dtrace_io_wait_done_probe_func_t dtrace_io_wait_done_probe;
+
/*
* Functions which allow the dtrace module to check that the kernel
* hooks have been compiled with sufficient space for it's private
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