d7e398ce1a
Historically the internal zfs debug infrastructure has been scattered throughout the code. Since we expect to start making more use of this code this patch performs some cleanup. * Consolidate the zfs debug infrastructure in the zfs_debug.[ch] files. This includes moving the zfs_flags and zfs_recover variables, plus moving the zfs_panic_recover() function. * Remove the existing unused functionality in zfs_debug.c and replace it with code which correctly utilized the spl logging infrastructure. * Remove the __dprintf() function from zfs_ioctl.c. This is dead code, the dprintf() functionality in the kernel relies on the spl log support. * Remove dprintf() from hdr_recl(). This wasn't particularly useful and was missing the required format specifier anyway. * Subsequent patches should unify the dprintf() and zfs_dbgmsg() functions. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
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*/
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#include <sys/zfs_context.h>
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/*
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* Enable various debugging features.
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*/
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int zfs_flags = 0;
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/*
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* zfs_recover can be set to nonzero to attempt to recover from
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* otherwise-fatal errors, typically caused by on-disk corruption. When
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* set, calls to zfs_panic_recover() will turn into warning messages.
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*/
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int zfs_recover = 0;
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void
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zfs_panic_recover(const char *fmt, ...)
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{
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va_list adx;
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va_start(adx, fmt);
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vcmn_err(zfs_recover ? CE_WARN : CE_PANIC, fmt, adx);
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va_end(adx);
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}
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/*
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* Debug logging is enabled by default for production kernel builds.
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* The overhead for this is negligible and the logs can be valuable when
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* debugging. For non-production user space builds all debugging except
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* logging is enabled since performance is no longer a concern.
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*/
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void
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zfs_dbgmsg_init(void)
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{
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if (zfs_flags == 0) {
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#if defined(_KERNEL)
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zfs_flags = ZFS_DEBUG_DPRINTF;
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spl_debug_mask |= SD_DPRINTF;
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spl_debug_subsys |= SS_USER1;
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#else
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zfs_flags = ~ZFS_DEBUG_DPRINTF;
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#endif /* _KERNEL */
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}
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}
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void
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zfs_dbgmsg_fini(void)
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{
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return;
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}
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#if defined(_KERNEL)
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module_param(zfs_flags, int, 0644);
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MODULE_PARM_DESC(zfs_flags, "Set additional debugging flags");
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module_param(zfs_recover, int, 0644);
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MODULE_PARM_DESC(zfs_recover, "Set to attempt to recover from fatal errors");
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#endif /* _KERNEL */
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