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mirror_zfs/include/spl-debug.h

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Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
/*****************************************************************************\
* Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
* Copyright (C) 2007 The Regents of the University of California.
* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
* UCRL-CODE-235197
*
* This file is part of the SPL, Solaris Porting Layer.
* For details, see <http://github.com/behlendorf/spl/>.
*
* The SPL 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.
*
* The SPL 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 the SPL. If not, see <http://www.gnu.org/licenses/>.
\*****************************************************************************/
/*
* Available debug functions. These function should be used by any
* package which needs to integrate with the SPL log infrastructure.
*
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
* SDEBUG() - Log debug message with specified mask.
* SDEBUG_LIMIT() - Log just 1 debug message with specified mask.
* SWARN() - Log a warning message.
* SERROR() - Log an error message.
* SEMERG() - Log an emergency error message.
* SCONSOLE() - Log a generic message to the console.
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
*
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
* SENTRY - Log entry point to a function.
* SEXIT - Log exit point from a function.
* SRETURN(x) - Log return from a function.
* SGOTO(x, y) - Log goto within a function.
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
*/
#ifndef _SPL_DEBUG_INTERNAL_H
#define _SPL_DEBUG_INTERNAL_H
#include <linux/limits.h>
Add --enable-debug-log configure option Until now the notion of an internal debug logging infrastructure was conflated with enabling ASSERT()s. This patch clarifies things by cleanly breaking the two subsystem apart. The result of this is the following behavior. --enable-debug - Enable/disable code wrapped in ASSERT()s. --disable-debug ASSERT()s are used to check invariants and are never required for correct operation. They are disabled by default because they may impact performance. --enable-debug-log - Enable/disable the debug log infrastructure. --disable-debug-log This infrastructure allows the spl code and its consumer to log messages to an in-kernel log. The granularity of the logging can be controlled by a debug mask. By default the mask disables most debug messages resulting in a negligible performance impact. Because of this the debug log is enabled by default. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2012-01-21 04:39:12 +04:00
#include <linux/sched.h>
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
#define SS_UNDEFINED 0x00000001
#define SS_ATOMIC 0x00000002
#define SS_KOBJ 0x00000004
#define SS_VNODE 0x00000008
#define SS_TIME 0x00000010
#define SS_RWLOCK 0x00000020
#define SS_THREAD 0x00000040
#define SS_CONDVAR 0x00000080
#define SS_MUTEX 0x00000100
#define SS_RNG 0x00000200
#define SS_TASKQ 0x00000400
#define SS_KMEM 0x00000800
#define SS_DEBUG 0x00001000
#define SS_GENERIC 0x00002000
#define SS_PROC 0x00004000
#define SS_MODULE 0x00008000
#define SS_CRED 0x00010000
#define SS_KSTAT 0x00020000
#define SS_XDR 0x00040000
Add Thread Specific Data (TSD) Implementation Thread specific data has implemented using a hash table, this avoids the need to add a member to the task structure and allows maximum portability between kernels. This implementation has been optimized to keep the tsd_set() and tsd_get() times as small as possible. The majority of the entries in the hash table are for specific tsd entries. These entries are hashed by the product of their key and pid because by design the key and pid are guaranteed to be unique. Their product also has the desirable properly that it will be uniformly distributed over the hash bins providing neither the pid nor key is zero. Under linux the zero pid is always the init process and thus won't be used, and this implementation is careful to never to assign a zero key. By default the hash table is sized to 512 bins which is expected to be sufficient for light to moderate usage of thread specific data. The hash table contains two additional type of entries. They first type is entry is called a 'key' entry and it is added to the hash during tsd_create(). It is used to store the address of the destructor function and it is used as an anchor point. All tsd entries which use the same key will be linked to this entry. This is used during tsd_destory() to quickly call the destructor function for all tsd associated with the key. The 'key' entry may be looked up with tsd_hash_search() by passing the key you wish to lookup and DTOR_PID constant as the pid. The second type of entry is called a 'pid' entry and it is added to the hash the first time a process set a key. The 'pid' entry is also used as an anchor and all tsd for the process will be linked to it. This list is using during tsd_exit() to ensure all registered destructors are run for the process. The 'pid' entry may be looked up with tsd_hash_search() by passing the PID_KEY constant as the key, and the process pid. Note that tsd_exit() is called by thread_exit() so if your using the Solaris thread API you should not need to call tsd_exit() directly.
2010-11-30 20:51:46 +03:00
#define SS_TSD 0x00080000
Fix zlib compression While portions of the code needed to support z_compress_level() and z_uncompress() where in place. In reality the current implementation was non-functional, it just was compilable. The critical missing component was to setup a workspace for the compress/uncompress stream structures to use. A kmem_cache was added for the workspace area because we require a large chunk of memory. This avoids to need to continually alloc/free this memory and vmap() the pages which is very slow. Several objects will reside in the per-cpu kmem_cache making them quick to acquire and release. A further optimization would be to adjust the implementation to additional ensure the memory is local to the cpu. Currently that may not be the case.
2011-02-26 00:26:19 +03:00
#define SS_ZLIB 0x00100000
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
#define SS_USER1 0x01000000
#define SS_USER2 0x02000000
#define SS_USER3 0x04000000
#define SS_USER4 0x08000000
#define SS_USER5 0x10000000
#define SS_USER6 0x20000000
#define SS_USER7 0x40000000
#define SS_USER8 0x80000000
#define SS_DEBUG_SUBSYS SS_UNDEFINED
#define SD_TRACE 0x00000001
#define SD_INFO 0x00000002
#define SD_WARNING 0x00000004
#define SD_ERROR 0x00000008
#define SD_EMERG 0x00000010
#define SD_CONSOLE 0x00000020
#define SD_IOCTL 0x00000040
#define SD_DPRINTF 0x00000080
#define SD_OTHER 0x00000100
#define SD_CANTMASK (SD_ERROR | SD_EMERG | SD_WARNING | SD_CONSOLE)
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
Add --enable-debug-log configure option Until now the notion of an internal debug logging infrastructure was conflated with enabling ASSERT()s. This patch clarifies things by cleanly breaking the two subsystem apart. The result of this is the following behavior. --enable-debug - Enable/disable code wrapped in ASSERT()s. --disable-debug ASSERT()s are used to check invariants and are never required for correct operation. They are disabled by default because they may impact performance. --enable-debug-log - Enable/disable the debug log infrastructure. --disable-debug-log This infrastructure allows the spl code and its consumer to log messages to an in-kernel log. The granularity of the logging can be controlled by a debug mask. By default the mask disables most debug messages resulting in a negligible performance impact. Because of this the debug log is enabled by default. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2012-01-21 04:39:12 +04:00
/* Debug log support enabled */
#ifdef DEBUG_LOG
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
#define __SDEBUG(cdls, subsys, mask, format, a...) \
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
do { \
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
if (((mask) & SD_CANTMASK) != 0 || \
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
((spl_debug_mask & (mask)) != 0 && \
(spl_debug_subsys & (subsys)) != 0)) \
spl_debug_msg(cdls, subsys, mask, __FILE__, \
__FUNCTION__, __LINE__, format, ## a); \
} while (0)
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
#define SDEBUG(mask, format, a...) \
__SDEBUG(NULL, SS_DEBUG_SUBSYS, mask, format, ## a)
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
#define __SDEBUG_LIMIT(subsys, mask, format, a...) \
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
do { \
static spl_debug_limit_state_t cdls; \
\
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
__SDEBUG(&cdls, subsys, mask, format, ## a); \
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
} while (0)
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
#define SDEBUG_LIMIT(mask, format, a...) \
__SDEBUG_LIMIT(SS_DEBUG_SUBSYS, mask, format, ## a)
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
#define SWARN(fmt, a...) SDEBUG_LIMIT(SD_WARNING, fmt, ## a)
#define SERROR(fmt, a...) SDEBUG_LIMIT(SD_ERROR, fmt, ## a)
#define SEMERG(fmt, a...) SDEBUG_LIMIT(SD_EMERG, fmt, ## a)
#define SCONSOLE(mask, fmt, a...) SDEBUG(SD_CONSOLE | (mask), fmt, ## a)
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
#define SENTRY SDEBUG(SD_TRACE, "Process entered\n")
#define SEXIT SDEBUG(SD_TRACE, "Process leaving\n")
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
#define SRETURN(rc) \
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
do { \
typeof(rc) RETURN__ret = (rc); \
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
SDEBUG(SD_TRACE, "Process leaving (rc=%lu : %ld : %lx)\n", \
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
(long)RETURN__ret, (long)RETURN__ret, (long)RETURN__ret); \
return RETURN__ret; \
} while (0)
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
#define SGOTO(label, rc) \
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
do { \
long GOTO__ret = (long)(rc); \
Prefix all SPL debug macros with 'S' To avoid conflicts with symbols defined by dependent packages all debugging symbols have been prefixed with a 'S' for SPL. Any dependent package needing to integrate with the SPL debug should include the spl-debug.h header and use the 'S' prefixed macros. They must also build with DEBUG defined.
2010-07-20 22:55:37 +04:00
SDEBUG(SD_TRACE,"Process leaving via %s (rc=%lu : %ld : %lx)\n",\
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
#label, (unsigned long)GOTO__ret, (signed long)GOTO__ret, \
(signed long)GOTO__ret); \
goto label; \
} while (0)
typedef struct {
unsigned long cdls_next;
int cdls_count;
long cdls_delay;
} spl_debug_limit_state_t;
/* Global debug variables */
extern unsigned long spl_debug_subsys;
extern unsigned long spl_debug_mask;
extern unsigned long spl_debug_printk;
extern int spl_debug_mb;
extern unsigned int spl_debug_binary;
extern unsigned int spl_debug_catastrophe;
extern unsigned int spl_debug_panic_on_bug;
extern char spl_debug_file_path[PATH_MAX];
extern unsigned int spl_console_ratelimit;
extern long spl_console_max_delay;
extern long spl_console_min_delay;
extern unsigned int spl_console_backoff;
extern unsigned int spl_debug_stack;
/* Exported debug functions */
extern int spl_debug_mask2str(char *str, int size, unsigned long mask, int ss);
extern int spl_debug_str2mask(unsigned long *mask, const char *str, int ss);
extern unsigned long spl_debug_set_mask(unsigned long mask);
extern unsigned long spl_debug_get_mask(void);
extern unsigned long spl_debug_set_subsys(unsigned long mask);
extern unsigned long spl_debug_get_subsys(void);
extern int spl_debug_set_mb(int mb);
extern int spl_debug_get_mb(void);
extern int spl_debug_dumplog(int flags);
extern void spl_debug_dumpstack(struct task_struct *tsk);
Add --enable-debug-log configure option Until now the notion of an internal debug logging infrastructure was conflated with enabling ASSERT()s. This patch clarifies things by cleanly breaking the two subsystem apart. The result of this is the following behavior. --enable-debug - Enable/disable code wrapped in ASSERT()s. --disable-debug ASSERT()s are used to check invariants and are never required for correct operation. They are disabled by default because they may impact performance. --enable-debug-log - Enable/disable the debug log infrastructure. --disable-debug-log This infrastructure allows the spl code and its consumer to log messages to an in-kernel log. The granularity of the logging can be controlled by a debug mask. By default the mask disables most debug messages resulting in a negligible performance impact. Because of this the debug log is enabled by default. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2012-01-21 04:39:12 +04:00
extern void spl_debug_bug(char *file, const char *fn, const int line, int fl);
extern int spl_debug_msg(void *arg, int subsys, int mask, const char *file,
const char *fn, const int line, const char *format, ...);
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
extern int spl_debug_clear_buffer(void);
extern int spl_debug_mark_buffer(char *text);
Prepend spl_ to all init/fini functions This is a bit of cleanup I'd been meaning to get to for a while to reduce the chance of a type conflict. Well that conflict finally occurred with the kstat_init() function which conflicts with a function in the 2.6.32-6-pve kernel. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #56
2011-11-11 21:03:31 +04:00
int spl_debug_init(void);
void spl_debug_fini(void);
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
Add --enable-debug-log configure option Until now the notion of an internal debug logging infrastructure was conflated with enabling ASSERT()s. This patch clarifies things by cleanly breaking the two subsystem apart. The result of this is the following behavior. --enable-debug - Enable/disable code wrapped in ASSERT()s. --disable-debug ASSERT()s are used to check invariants and are never required for correct operation. They are disabled by default because they may impact performance. --enable-debug-log - Enable/disable the debug log infrastructure. --disable-debug-log This infrastructure allows the spl code and its consumer to log messages to an in-kernel log. The granularity of the logging can be controlled by a debug mask. By default the mask disables most debug messages resulting in a negligible performance impact. Because of this the debug log is enabled by default. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2012-01-21 04:39:12 +04:00
/* Debug log support disabled */
#else /* DEBUG_LOG */
#define SDEBUG(mask, fmt, a...) ((void)0)
#define SDEBUG_LIMIT(x, y, fmt, a...) ((void)0)
#define SWARN(fmt, a...) ((void)0)
#define SERROR(fmt, a...) ((void)0)
#define SEMERG(fmt, a...) ((void)0)
#define SCONSOLE(mask, fmt, a...) ((void)0)
#define SENTRY ((void)0)
#define SEXIT ((void)0)
#define SRETURN(x) return (x)
#define SGOTO(x, y) { ((void)(y)); goto x; }
static inline int spl_debug_init(void) { return (0); }
static inline void spl_debug_fini(void) { return; }
static inline void
spl_debug_bug(char *file, const char *fn, const int line, int fl)
{
return;
}
static inline int
spl_debug_msg(void *arg, int subsys, int mask, const char *file,
const char *fn, const int line, const char *format, ...)
{
return (0);
}
#endif /* DEBUG_LOG */
Split <sys/debug.h> header To avoid symbol conflicts with dependent packages the debug header must be split in to several parts. The <sys/debug.h> header now only contains the Solaris macro's such as ASSERT and VERIFY. The spl-debug.h header contain the spl specific debugging infrastructure and should be included by any package which needs to use the spl logging. Finally the spl-trace.h header contains internal data structures only used for the log facility and should not be included by anythign by spl-debug.c. This way dependent packages can include the standard Solaris headers without picking up any SPL debug macros. However, if the dependant package want to integrate with the SPL debugging subsystem they can then explicitly include spl-debug.h. Along with this change I have dropped the CHECK_STACK macros because the upstream Linux kernel now has much better stack depth checking built in and we don't need this complexity. Additionally SBUG has been replaced with PANIC and provided as part of the Solaris macro set. While the Solaris version is really panic() that conflicts with the Linux kernel so we'll just have to make due to PANIC. It should rarely be called directly, the prefered usage would be an ASSERT or VERIFY. There's lots of change here but this cleanup was overdue.
2010-07-20 01:16:05 +04:00
#endif /* SPL_DEBUG_INTERNAL_H */
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