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In DEBUG mode, assert failures unconditionally trigger a kernel BUG. This is useful in diagnostic situations to panic a system and collect detailed state information at the time of a failure. This can also cause problems in cases where DEBUG mode code is desired but it is preferable not trigger kernel BUGs on assert failure. For example, during development of new code or during certain xfstests tests that intentionally cause corruption and test the kernel for survival (but otherwise may expect to trigger assert failures). To provide additional flexibility, create the <sysfs>/fs/xfs/debug/bug_on_assert tunable to configure assert failure behavior at runtime. This tunable is only available in DEBUG mode and is enabled by default to preserve existing default behavior. When disabled, assert failures in DEBUG mode result in kernel warnings. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
53 lines
1.8 KiB
C
53 lines
1.8 KiB
C
/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "xfs.h"
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#include "xfs_sysctl.h"
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/*
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* Tunable XFS parameters. xfs_params is required even when CONFIG_SYSCTL=n,
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* other XFS code uses these values. Times are measured in centisecs (i.e.
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* 100ths of a second) with the exception of eofb_timer and cowb_timer, which
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* are measured in seconds.
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*/
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xfs_param_t xfs_params = {
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/* MIN DFLT MAX */
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.sgid_inherit = { 0, 0, 1 },
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.symlink_mode = { 0, 0, 1 },
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.panic_mask = { 0, 0, 255 },
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.error_level = { 0, 3, 11 },
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.syncd_timer = { 1*100, 30*100, 7200*100},
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.stats_clear = { 0, 0, 1 },
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.inherit_sync = { 0, 1, 1 },
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.inherit_nodump = { 0, 1, 1 },
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.inherit_noatim = { 0, 1, 1 },
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.xfs_buf_timer = { 100/2, 1*100, 30*100 },
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.xfs_buf_age = { 1*100, 15*100, 7200*100},
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.inherit_nosym = { 0, 0, 1 },
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.rotorstep = { 1, 1, 255 },
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.inherit_nodfrg = { 0, 1, 1 },
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.fstrm_timer = { 1, 30*100, 3600*100},
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.eofb_timer = { 1, 300, 3600*24},
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.cowb_timer = { 1, 1800, 3600*24},
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};
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struct xfs_globals xfs_globals = {
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.log_recovery_delay = 0, /* no delay by default */
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.bug_on_assert = true, /* historical default in DEBUG
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* mode */
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};
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