--- /dev/null
+/*****************************************************************************\
+ * 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.
+ *
+ * CDEBUG() - Log debug message with specified mask.
+ * CDEBUG_LIMIT() - Log just 1 debug message with specified mask.
+ * CWARN() - Log a warning message.
+ * CERROR() - Log an error message.
+ * CEMERG() - Log an emergency error message.
+ * CONSOLE() - Log a generic message to the console.
+ *
+ * ENTRY - Log entry point to a function.
+ * EXIT - Log exit point from a function.
+ * RETURN(x) - Log return from a function.
+ * GOTO(x, y) - Log goto within a function.
+ */
+
+#ifndef _SPL_DEBUG_INTERNAL_H
+#define _SPL_DEBUG_INTERNAL_H
+
+#include <linux/limits.h>
+
+#define S_UNDEFINED 0x00000001
+#define S_ATOMIC 0x00000002
+#define S_KOBJ 0x00000004
+#define S_VNODE 0x00000008
+#define S_TIME 0x00000010
+#define S_RWLOCK 0x00000020
+#define S_THREAD 0x00000040
+#define S_CONDVAR 0x00000080
+#define S_MUTEX 0x00000100
+#define S_RNG 0x00000200
+#define S_TASKQ 0x00000400
+#define S_KMEM 0x00000800
+#define S_DEBUG 0x00001000
+#define S_GENERIC 0x00002000
+#define S_PROC 0x00004000
+#define S_MODULE 0x00008000
+#define S_CRED 0x00010000
+
+#define D_TRACE 0x00000001
+#define D_INFO 0x00000002
+#define D_WARNING 0x00000004
+#define D_ERROR 0x00000008
+#define D_EMERG 0x00000010
+#define D_CONSOLE 0x00000020
+#define D_IOCTL 0x00000040
+#define D_DPRINTF 0x00000080
+#define D_OTHER 0x00000100
+
+#define D_CANTMASK (D_ERROR | D_EMERG | D_WARNING | D_CONSOLE)
+#define DEBUG_SUBSYSTEM S_UNDEFINED
+
+#ifdef NDEBUG /* Debugging Disabled */
+
+#define CDEBUG(mask, fmt, a...) ((void)0)
+#define CDEBUG_LIMIT(x, y, fmt, a...) ((void)0)
+#define CWARN(fmt, a...) ((void)0)
+#define CERROR(fmt, a...) ((void)0)
+#define CEMERG(fmt, a...) ((void)0)
+#define CONSOLE(mask, fmt, a...) ((void)0)
+
+#define ENTRY ((void)0)
+#define EXIT ((void)0)
+#define RETURN(x) return (x)
+#define GOTO(x, y) { ((void)(y)); goto x; }
+
+#else /* Debugging Enabled */
+
+#define __CDEBUG(cdls, subsys, mask, format, a...) \
+do { \
+ if (((mask) & D_CANTMASK) != 0 || \
+ ((spl_debug_mask & (mask)) != 0 && \
+ (spl_debug_subsys & (subsys)) != 0)) \
+ spl_debug_msg(cdls, subsys, mask, __FILE__, \
+ __FUNCTION__, __LINE__, format, ## a); \
+} while (0)
+
+#define CDEBUG(mask, format, a...) \
+ __CDEBUG(NULL, DEBUG_SUBSYSTEM, mask, format, ## a)
+
+#define __CDEBUG_LIMIT(subsys, mask, format, a...) \
+do { \
+ static spl_debug_limit_state_t cdls; \
+ \
+ __CDEBUG(&cdls, subsys, mask, format, ## a); \
+} while (0)
+
+#define CDEBUG_LIMIT(mask, format, a...) \
+ __CDEBUG_LIMIT(DEBUG_SUBSYSTEM, mask, format, ## a)
+
+#define CWARN(fmt, a...) CDEBUG_LIMIT(D_WARNING, fmt, ## a)
+#define CERROR(fmt, a...) CDEBUG_LIMIT(D_ERROR, fmt, ## a)
+#define CEMERG(fmt, a...) CDEBUG_LIMIT(D_EMERG, fmt, ## a)
+#define CONSOLE(mask, fmt, a...) CDEBUG(D_CONSOLE | (mask), fmt, ## a)
+
+#define ENTRY CDEBUG(D_TRACE, "Process entered\n")
+#define EXIT CDEBUG(D_TRACE, "Process leaving\n")
+
+#define RETURN(rc) \
+do { \
+ typeof(rc) RETURN__ret = (rc); \
+ CDEBUG(D_TRACE, "Process leaving (rc=%lu : %ld : %lx)\n", \
+ (long)RETURN__ret, (long)RETURN__ret, (long)RETURN__ret); \
+ return RETURN__ret; \
+} while (0)
+
+#define GOTO(label, rc) \
+do { \
+ long GOTO__ret = (long)(rc); \
+ CDEBUG(D_TRACE,"Process leaving via %s (rc=%lu : %ld : %lx)\n", \
+ #label, (unsigned long)GOTO__ret, (signed long)GOTO__ret, \
+ (signed long)GOTO__ret); \
+ goto label; \
+} while (0)
+
+#endif /* NDEBUG */
+
+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);
+extern int spl_debug_clear_buffer(void);
+extern int spl_debug_mark_buffer(char *text);
+
+int debug_init(void);
+void debug_fini(void);
+
+#endif /* SPL_DEBUG_INTERNAL_H */
--- /dev/null
+/*****************************************************************************\
+ * 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/>.
+\*****************************************************************************/
+
+#ifndef _SPL_TRACE_H
+#define _SPL_TRACE_H
+
+#define TCD_MAX_PAGES (5 << (20 - PAGE_SHIFT))
+#define TCD_STOCK_PAGES (TCD_MAX_PAGES)
+#define TRACE_CONSOLE_BUFFER_SIZE 1024
+
+#define SPL_DEFAULT_MAX_DELAY (600 * HZ)
+#define SPL_DEFAULT_MIN_DELAY ((HZ + 1) / 2)
+#define SPL_DEFAULT_BACKOFF 2
+
+#define DL_NOTHREAD 0x0001 /* Do not create a new thread */
+#define DL_SINGLE_CPU 0x0002 /* Collect pages from this CPU*/
+
+typedef struct dumplog_priv {
+ wait_queue_head_t dp_waitq;
+ pid_t dp_pid;
+ int dp_flags;
+ atomic_t dp_done;
+} dumplog_priv_t;
+
+/* Three trace data types */
+typedef enum {
+ TCD_TYPE_PROC,
+ TCD_TYPE_SOFTIRQ,
+ TCD_TYPE_IRQ,
+ TCD_TYPE_MAX
+} tcd_type_t;
+
+union trace_data_union {
+ struct trace_cpu_data {
+ /* pages with trace records not yet processed by tracefiled */
+ struct list_head tcd_pages;
+ /* number of pages on ->tcd_pages */
+ unsigned long tcd_cur_pages;
+ /* Max number of pages allowed on ->tcd_pages */
+ unsigned long tcd_max_pages;
+
+ /*
+ * preallocated pages to write trace records into. Pages from
+ * ->tcd_stock_pages are moved to ->tcd_pages by spl_debug_msg().
+ *
+ * This list is necessary, because on some platforms it's
+ * impossible to perform efficient atomic page allocation in a
+ * non-blockable context.
+ *
+ * Such platforms fill ->tcd_stock_pages "on occasion", when
+ * tracing code is entered in blockable context.
+ *
+ * trace_get_tage_try() tries to get a page from
+ * ->tcd_stock_pages first and resorts to atomic page
+ * allocation only if this queue is empty. ->tcd_stock_pages
+ * is replenished when tracing code is entered in blocking
+ * context (darwin-tracefile.c:trace_get_tcd()). We try to
+ * maintain TCD_STOCK_PAGES (40 by default) pages in this
+ * queue. Atomic allocation is only required if more than
+ * TCD_STOCK_PAGES pagesful are consumed by trace records all
+ * emitted in non-blocking contexts. Which is quite unlikely.
+ */
+ struct list_head tcd_stock_pages;
+ /* number of pages on ->tcd_stock_pages */
+ unsigned long tcd_cur_stock_pages;
+
+ unsigned short tcd_shutting_down;
+ unsigned short tcd_cpu;
+ unsigned short tcd_type;
+ /* The factors to share debug memory. */
+ unsigned short tcd_pages_factor;
+
+ /*
+ * This spinlock is needed to workaround the problem of
+ * set_cpus_allowed() being GPL-only. Since we cannot
+ * schedule a thread on a specific CPU when dumping the
+ * pages, we must use the spinlock for mutual exclusion.
+ */
+ spinlock_t tcd_lock;
+ unsigned long tcd_lock_flags;
+ } tcd;
+ char __pad[L1_CACHE_ALIGN(sizeof(struct trace_cpu_data))];
+};
+
+extern union trace_data_union (*trace_data[TCD_TYPE_MAX])[NR_CPUS];
+
+#define tcd_for_each(tcd, i, j) \
+ for (i = 0; i < TCD_TYPE_MAX && trace_data[i]; i++) \
+ for (j = 0, ((tcd) = &(*trace_data[i])[j].tcd); \
+ j < num_possible_cpus(); j++, (tcd) = &(*trace_data[i])[j].tcd)
+
+#define tcd_for_each_type_lock(tcd, i, cpu) \
+ for (i = 0; i < TCD_TYPE_MAX && trace_data[i] && \
+ (tcd = &(*trace_data[i])[cpu].tcd) && \
+ trace_lock_tcd(tcd); trace_unlock_tcd(tcd), i++)
+
+struct trace_page {
+ struct page *page; /* page itself */
+ struct list_head linkage; /* Used by trace_data_union */
+ unsigned int used; /* number of bytes used within this page */
+ unsigned short cpu; /* cpu that owns this page */
+ unsigned short type; /* type(context) of this page */
+};
+
+struct page_collection {
+ struct list_head pc_pages;
+ spinlock_t pc_lock;
+ int pc_want_daemon_pages;
+};
+
+#endif /* SPL_TRACE_H */
* with the SPL. If not, see <http://www.gnu.org/licenses/>.
\*****************************************************************************/
+/*
+ * Available Solaris debug functions. All of the ASSERT() macros will be
+ * compiled out when NDEBUG is defined, this is the default behavior for
+ * the SPL. To enable assertions use the --enable-debug with configure.
+ * The VERIFY() functions are never compiled out and cannot be disabled.
+ *
+ * PANIC() - Panic the node and print message.
+ * ASSERT() - Assert X is true, if not panic.
+ * ASSERTF() - Assert X is true, if not panic and print message.
+ * ASSERTV() - Wraps a variable declaration which is only used by ASSERT().
+ * ASSERT3S() - Assert signed X OP Y is true, if not panic.
+ * ASSERT3U() - Assert unsigned X OP Y is true, if not panic.
+ * ASSERT3P() - Assert pointer X OP Y is true, if not panic.
+ * VERIFY() - Verify X is true, if not panic.
+ * VERIFY3S() - Verify signed X OP Y is true, if not panic.
+ * VERIFY3U() - Verify unsigned X OP Y is true, if not panic.
+ * VERIFY3P() - Verify pointer X OP Y is true, if not panic.
+ */
+
#ifndef _SPL_DEBUG_H
#define _SPL_DEBUG_H
-#include <linux/sched.h> /* THREAD_SIZE */
-#include <linux/proc_fs.h>
-
-extern unsigned long spl_debug_mask;
-extern unsigned long spl_debug_subsys;
-
-#define S_UNDEFINED 0x00000001
-#define S_ATOMIC 0x00000002
-#define S_KOBJ 0x00000004
-#define S_VNODE 0x00000008
-#define S_TIME 0x00000010
-#define S_RWLOCK 0x00000020
-#define S_THREAD 0x00000040
-#define S_CONDVAR 0x00000080
-#define S_MUTEX 0x00000100
-#define S_RNG 0x00000200
-#define S_TASKQ 0x00000400
-#define S_KMEM 0x00000800
-#define S_DEBUG 0x00001000
-#define S_GENERIC 0x00002000
-#define S_PROC 0x00004000
-#define S_MODULE 0x00008000
-#define S_CRED 0x00010000
-
-#define D_TRACE 0x00000001
-#define D_INFO 0x00000002
-#define D_WARNING 0x00000004
-#define D_ERROR 0x00000008
-#define D_EMERG 0x00000010
-#define D_CONSOLE 0x00000020
-#define D_IOCTL 0x00000040
-#define D_DPRINTF 0x00000080
-#define D_OTHER 0x00000100
-
-#define D_CANTMASK (D_ERROR | D_EMERG | D_WARNING | D_CONSOLE)
-#define DEBUG_SUBSYSTEM S_UNDEFINED
-
-int debug_init(void);
-void debug_fini(void);
-int spl_debug_mask2str(char *str, int size, unsigned long mask, int is_subsys);
-int spl_debug_str2mask(unsigned long *mask, const char *str, int is_subsys);
-
-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;
-
-#define TCD_MAX_PAGES (5 << (20 - PAGE_SHIFT))
-#define TCD_STOCK_PAGES (TCD_MAX_PAGES)
-#define TRACE_CONSOLE_BUFFER_SIZE 1024
-
-#define SPL_DEFAULT_MAX_DELAY (600 * HZ)
-#define SPL_DEFAULT_MIN_DELAY ((HZ + 1) / 2)
-#define SPL_DEFAULT_BACKOFF 2
-
-#define DL_NOTHREAD 0x0001 /* Do not create a new thread */
-#define DL_SINGLE_CPU 0x0002 /* Collect pages from this CPU */
-
-typedef struct dumplog_priv {
- wait_queue_head_t dp_waitq;
- pid_t dp_pid;
- int dp_flags;
- atomic_t dp_done;
-} dumplog_priv_t;
-
-typedef struct {
- unsigned long cdls_next;
- int cdls_count;
- long cdls_delay;
-} spl_debug_limit_state_t;
-
-/* Three trace data types */
-typedef enum {
- TCD_TYPE_PROC,
- TCD_TYPE_SOFTIRQ,
- TCD_TYPE_IRQ,
- TCD_TYPE_MAX
-} tcd_type_t;
-
-union trace_data_union {
- struct trace_cpu_data {
- /* pages with trace records not yet processed by tracefiled */
- struct list_head tcd_pages;
- /* number of pages on ->tcd_pages */
- unsigned long tcd_cur_pages;
- /* Max number of pages allowed on ->tcd_pages */
- unsigned long tcd_max_pages;
-
- /*
- * preallocated pages to write trace records into. Pages from
- * ->tcd_stock_pages are moved to ->tcd_pages by spl_debug_msg().
- *
- * This list is necessary, because on some platforms it's
- * impossible to perform efficient atomic page allocation in a
- * non-blockable context.
- *
- * Such platforms fill ->tcd_stock_pages "on occasion", when
- * tracing code is entered in blockable context.
- *
- * trace_get_tage_try() tries to get a page from
- * ->tcd_stock_pages first and resorts to atomic page
- * allocation only if this queue is empty. ->tcd_stock_pages
- * is replenished when tracing code is entered in blocking
- * context (darwin-tracefile.c:trace_get_tcd()). We try to
- * maintain TCD_STOCK_PAGES (40 by default) pages in this
- * queue. Atomic allocation is only required if more than
- * TCD_STOCK_PAGES pagesful are consumed by trace records all
- * emitted in non-blocking contexts. Which is quite unlikely.
- */
- struct list_head tcd_stock_pages;
- /* number of pages on ->tcd_stock_pages */
- unsigned long tcd_cur_stock_pages;
-
- unsigned short tcd_shutting_down;
- unsigned short tcd_cpu;
- unsigned short tcd_type;
- /* The factors to share debug memory. */
- unsigned short tcd_pages_factor;
-
- /*
- * This spinlock is needed to workaround the problem of
- * set_cpus_allowed() being GPL-only. Since we cannot
- * schedule a thread on a specific CPU when dumping the
- * pages, we must use the spinlock for mutual exclusion.
- */
- spinlock_t tcd_lock;
- unsigned long tcd_lock_flags;
- } tcd;
- char __pad[L1_CACHE_ALIGN(sizeof(struct trace_cpu_data))];
-};
-
-extern union trace_data_union (*trace_data[TCD_TYPE_MAX])[NR_CPUS];
-
-#define tcd_for_each(tcd, i, j) \
- for (i = 0; i < TCD_TYPE_MAX && trace_data[i]; i++) \
- for (j = 0, ((tcd) = &(*trace_data[i])[j].tcd); \
- j < num_possible_cpus(); j++, (tcd) = &(*trace_data[i])[j].tcd)
-
-#define tcd_for_each_type_lock(tcd, i, cpu) \
- for (i = 0; i < TCD_TYPE_MAX && trace_data[i] && \
- (tcd = &(*trace_data[i])[cpu].tcd) && \
- trace_lock_tcd(tcd); trace_unlock_tcd(tcd), i++)
-
-struct trace_page {
- struct page * page; /* page itself */
- struct list_head linkage; /* Used by lists in trace_data_union */
- unsigned int used; /* number of bytes used within this page */
- unsigned short cpu; /* cpu that owns this page */
- unsigned short type; /* type(context) of this page */
-};
-
-struct page_collection {
- struct list_head pc_pages;
- spinlock_t pc_lock;
- int pc_want_daemon_pages;
-};
-
-#define SBUG() spl_debug_bug(__FILE__, __FUNCTION__, __LINE__, 0);
-
-#ifdef NDEBUG
+#ifdef NDEBUG /* Debugging Disabled */
-#define CDEBUG_STACK() (0)
-#define CDEBUG_LIMIT(x, y, z, a...) ((void)0)
-#define __CDEBUG_LIMIT(x, y, z, a...) ((void)0)
-#define CDEBUG(mask, format, a...) ((void)0)
-#define CWARN(fmt, a...) ((void)0)
-#define CERROR(fmt, a...) ((void)0)
-#define CEMERG(fmt, a...) ((void)0)
-#define CONSOLE(mask, fmt, a...) ((void)0)
-
-#define ENTRY ((void)0)
-#define EXIT ((void)0)
-#define RETURN(x) return (x)
-#define GOTO(x, y) { ((void)(y)); goto x; }
+#define PANIC(fmt, a...) \
+do { \
+ printk(KERN_EMERG fmt, ## a); \
+ spl_debug_bug(__FILE__, __FUNCTION__, __LINE__, 0); \
+} while (0)
#define __ASSERT(x) ((void)0)
-#define __ASSERT_TAGE_INVARIANT(x) ((void)0)
#define ASSERT(x) ((void)0)
#define ASSERTF(x, y, z...) ((void)0)
#define ASSERTV(x)
-#define VERIFY(cond) \
-do { \
- if (unlikely(!(cond))) { \
- printk(KERN_ERR "VERIFY(" #cond ") failed\n"); \
- SBUG(); \
- } \
+#define VERIFY(cond) \
+do { \
+ if (unlikely(!(cond))) \
+ PANIC("VERIFY(" #cond ") failed\n"); \
} while (0)
-#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE, FMT, CAST) \
-do { \
- if (!((TYPE)(LEFT) OP (TYPE)(RIGHT))) { \
- printk(KERN_ERR \
- "VERIFY3(" #LEFT " " #OP " " #RIGHT ") " \
- "failed (" FMT " " #OP " " FMT ")\n", \
- CAST (LEFT), CAST (RIGHT)); \
- SBUG(); \
- } \
+#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE, FMT, CAST) \
+do { \
+ if (!((TYPE)(LEFT) OP (TYPE)(RIGHT))) \
+ PANIC("VERIFY3(" #LEFT " " #OP " " #RIGHT ") " \
+ "failed (" FMT " " #OP " " FMT ")\n", \
+ CAST (LEFT), CAST (RIGHT)); \
} while (0)
-#define VERIFY3S(x,y,z) VERIFY3_IMPL(x, y, z, int64_t, "%lld", (long long))
-#define VERIFY3U(x,y,z) VERIFY3_IMPL(x, y, z, uint64_t, "%llu", \
- (unsigned long long))
-#define VERIFY3P(x,y,z) VERIFY3_IMPL(x, y, z, uintptr_t, "%p", (void *))
+#define VERIFY3S(x,y,z) VERIFY3_IMPL(x, y, z, int64_t, "%lld", (long long))
+#define VERIFY3U(x,y,z) VERIFY3_IMPL(x, y, z, uint64_t, "%llu", \
+ (unsigned long long))
+#define VERIFY3P(x,y,z) VERIFY3_IMPL(x, y, z, uintptr_t, "%p", (void *))
-#define ASSERT3S(x,y,z) ((void)0)
-#define ASSERT3U(x,y,z) ((void)0)
-#define ASSERT3P(x,y,z) ((void)0)
+#define ASSERT3S(x,y,z) ((void)0)
+#define ASSERT3U(x,y,z) ((void)0)
+#define ASSERT3P(x,y,z) ((void)0)
-#else /* NDEBUG */
+#else /* Debugging Enabled */
-#ifdef __ia64__
-#define CDEBUG_STACK() (THREAD_SIZE - \
- ((unsigned long)__builtin_dwarf_cfa() & \
- (THREAD_SIZE - 1)))
-#else
-#define CDEBUG_STACK() (THREAD_SIZE - \
- ((unsigned long)__builtin_frame_address(0) & \
- (THREAD_SIZE - 1)))
-# endif /* __ia64__ */
-
-/* DL_SINGLE_CPU flag is passed to spl_debug_bug() because we are about
- * to over run our stack and likely damage at least one other unknown
- * thread stack. We must finish generating the needed debug info within
- * this thread context because once we yeild the CPU its very likely
- * the system will crash.
- */
-#define __CHECK_STACK(file, func, line) \
-do { \
- if (unlikely(CDEBUG_STACK() > spl_debug_stack)) { \
- spl_debug_stack = CDEBUG_STACK(); \
- \
- if (unlikely(CDEBUG_STACK() > (4 * THREAD_SIZE) / 5)) { \
- spl_debug_msg(NULL, D_TRACE, D_WARNING, \
- file, func, line, "Error " \
- "exceeded maximum safe stack " \
- "size (%lu/%lu)\n", \
- CDEBUG_STACK(), THREAD_SIZE); \
- spl_debug_bug(file, func, line, DL_SINGLE_CPU); \
- } \
- } \
+#define PANIC(fmt, a...) \
+do { \
+ spl_debug_msg(NULL, 0, 0, \
+ __FILE__, __FUNCTION__, __LINE__, fmt, ## a); \
+ spl_debug_bug(__FILE__, __FUNCTION__, __LINE__, 0); \
} while (0)
-/* NOTE: The run time stack overflow checking is being disabled by default
- * because it is not safe for use with 2.6.29 and latter kernels. These
- * kernels do now have their own stack overflow checking so this support
- * has become redundant anyway. It can be re-enabled for older kernels or
- * arches without stack overflow checking by redefining CHECK_STACK().
- *
- * #define CHECK_STACK() __CHECK_STACK(__FILE__, __func__, __LINE__)
- */
-#define CHECK_STACK() ((void)0)
-
/* ASSERTION that is safe to use within the debug system */
-#define __ASSERT(cond) \
-do { \
- if (unlikely(!(cond))) { \
- printk(KERN_ERR "ASSERTION(" #cond ") failed\n"); \
- BUG(); \
- } \
+#define __ASSERT(cond) \
+do { \
+ if (unlikely(!(cond))) { \
+ printk(KERN_EMERG "ASSERTION(" #cond ") failed\n"); \
+ BUG(); \
+ } \
} while (0)
-#define __ASSERT_TAGE_INVARIANT(tage) \
-do { \
- __ASSERT(tage != NULL); \
- __ASSERT(tage->page != NULL); \
- __ASSERT(tage->used <= PAGE_SIZE); \
- __ASSERT(page_count(tage->page) > 0); \
-} while(0)
-
/* ASSERTION that will debug log used outside the debug sysytem */
-#define ASSERT(cond) \
-do { \
- CHECK_STACK(); \
- \
- if (unlikely(!(cond))) { \
- spl_debug_msg(NULL, DEBUG_SUBSYSTEM, D_EMERG, \
- __FILE__, __FUNCTION__, __LINE__, \
- "ASSERTION(" #cond ") failed\n"); \
- SBUG(); \
- } \
-} while (0)
-
-#define ASSERTF(cond, fmt, a...) \
-do { \
- CHECK_STACK(); \
- \
- if (unlikely(!(cond))) { \
- spl_debug_msg(NULL, DEBUG_SUBSYSTEM, D_EMERG, \
- __FILE__, __FUNCTION__, __LINE__, \
- "ASSERTION(" #cond ") failed: " fmt, \
- ## a); \
- SBUG(); \
- } \
-} while (0)
-
-#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE, FMT, CAST) \
-do { \
- CHECK_STACK(); \
- \
- if (!((TYPE)(LEFT) OP (TYPE)(RIGHT))) { \
- spl_debug_msg(NULL, DEBUG_SUBSYSTEM, D_EMERG, \
- __FILE__, __FUNCTION__, __LINE__, \
- "VERIFY3(" #LEFT " " #OP " " #RIGHT ") " \
- "failed (" FMT " " #OP " " FMT ")\n", \
- CAST (LEFT), CAST (RIGHT)); \
- SBUG(); \
- } \
-} while (0)
-
-#define VERIFY3S(x,y,z) VERIFY3_IMPL(x, y, z, int64_t, "%lld", (long long))
-#define VERIFY3U(x,y,z) VERIFY3_IMPL(x, y, z, uint64_t, "%llu", \
- (unsigned long long))
-#define VERIFY3P(x,y,z) VERIFY3_IMPL(x, y, z, uintptr_t, "%p", (void *))
-
-#define ASSERT3S(x,y,z) VERIFY3S(x, y, z)
-#define ASSERT3U(x,y,z) VERIFY3U(x, y, z)
-#define ASSERT3P(x,y,z) VERIFY3P(x, y, z)
-
-#define ASSERTV(x) x
-#define VERIFY(x) ASSERT(x)
-
-#define __CDEBUG(cdls, subsys, mask, format, a...) \
-do { \
- CHECK_STACK(); \
- \
- if (((mask) & D_CANTMASK) != 0 || \
- ((spl_debug_mask & (mask)) != 0 && \
- (spl_debug_subsys & (subsys)) != 0)) \
- spl_debug_msg(cdls, subsys, mask, \
- __FILE__, __FUNCTION__, __LINE__, \
- format, ## a); \
+#define ASSERT(cond) \
+do { \
+ if (unlikely(!(cond))) \
+ PANIC("ASSERTION(" #cond ") failed\n"); \
} while (0)
-#define CDEBUG(mask, format, a...) \
- __CDEBUG(NULL, DEBUG_SUBSYSTEM, mask, format, ## a)
-
-#define __CDEBUG_LIMIT(subsys, mask, format, a...) \
-do { \
- static spl_debug_limit_state_t cdls; \
- \
- __CDEBUG(&cdls, subsys, mask, format, ## a); \
+#define ASSERTF(cond, fmt, a...) \
+do { \
+ if (unlikely(!(cond))) \
+ PANIC("ASSERTION(" #cond ") failed: " fmt, ## a); \
} while (0)
-#define CDEBUG_LIMIT(mask, format, a...) \
- __CDEBUG_LIMIT(DEBUG_SUBSYSTEM, mask, format, ## a)
-
-#define CWARN(fmt, a...) CDEBUG_LIMIT(D_WARNING, fmt, ## a)
-#define CERROR(fmt, a...) CDEBUG_LIMIT(D_ERROR, fmt, ## a)
-#define CEMERG(fmt, a...) CDEBUG_LIMIT(D_EMERG, fmt, ## a)
-#define CONSOLE(mask, fmt, a...) CDEBUG(D_CONSOLE | (mask), fmt, ## a)
-
-#define GOTO(label, rc) \
-do { \
- long GOTO__ret = (long)(rc); \
- CDEBUG(D_TRACE,"Process leaving via %s (rc=%lu : %ld : %lx)\n", \
- #label, (unsigned long)GOTO__ret, (signed long)GOTO__ret,\
- (signed long)GOTO__ret); \
- goto label; \
+#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE, FMT, CAST) \
+do { \
+ if (!((TYPE)(LEFT) OP (TYPE)(RIGHT))) \
+ PANIC("VERIFY3(" #LEFT " " #OP " " #RIGHT ") " \
+ "failed (" FMT " " #OP " " FMT ")\n", \
+ CAST (LEFT), CAST (RIGHT)); \
} while (0)
-#define RETURN(rc) \
-do { \
- typeof(rc) RETURN__ret = (rc); \
- CDEBUG(D_TRACE, "Process leaving (rc=%lu : %ld : %lx)\n", \
- (long)RETURN__ret, (long)RETURN__ret, (long)RETURN__ret);\
- return RETURN__ret; \
-} while (0)
+#define VERIFY3S(x,y,z) VERIFY3_IMPL(x, y, z, int64_t, "%lld", (long long))
+#define VERIFY3U(x,y,z) VERIFY3_IMPL(x, y, z, uint64_t, "%llu", \
+ (unsigned long long))
+#define VERIFY3P(x,y,z) VERIFY3_IMPL(x, y, z, uintptr_t, "%p", (void *))
-#define __ENTRY(subsys) \
-do { \
- __CDEBUG(NULL, subsys, D_TRACE, "Process entered\n"); \
-} while (0)
+#define ASSERT3S(x,y,z) VERIFY3S(x, y, z)
+#define ASSERT3U(x,y,z) VERIFY3U(x, y, z)
+#define ASSERT3P(x,y,z) VERIFY3P(x, y, z)
-#define __EXIT(subsys) \
-do { \
- __CDEBUG(NULL, subsys, D_TRACE, "Process leaving\n"); \
-} while(0)
+#define ASSERTV(x) x
+#define VERIFY(x) ASSERT(x)
-#define ENTRY __ENTRY(DEBUG_SUBSYSTEM)
-#define EXIT __EXIT(DEBUG_SUBSYSTEM)
#endif /* NDEBUG */
-#define spl_debug_msg(cdls, subsys, mask, file, fn, line, format, a...) \
- spl_debug_vmsg(cdls, subsys, mask, file, fn, \
- line, NULL, NULL, format, ##a)
-
-extern int spl_debug_vmsg(spl_debug_limit_state_t *cdls, int subsys, int mask,
- const char *file, const char *fn, const int line,
- const char *format1, va_list args, const char *format2, ...);
-
-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);
-extern void spl_debug_bug(char *file, const char *func, const int line, int flags);
-
-extern int spl_debug_clear_buffer(void);
-extern int spl_debug_mark_buffer(char *text);
+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, ...);
#endif /* SPL_DEBUG_H */
#include <linux/proc_compat.h>
#include <linux/file_compat.h>
#include <sys/sysmacros.h>
-#include <sys/debug.h>
+#include <spl-debug.h>
+#include <spl-trace.h>
#include <spl-ctl.h>
#ifdef DEBUG_SUBSYSTEM
unsigned long spl_debug_subsys = ~0;
EXPORT_SYMBOL(spl_debug_subsys);
-module_param(spl_debug_subsys, long, 0644);
+module_param(spl_debug_subsys, ulong, 0644);
MODULE_PARM_DESC(spl_debug_subsys, "Subsystem debugging level mask.");
unsigned long spl_debug_mask = (D_EMERG | D_ERROR | D_WARNING | D_CONSOLE);
EXPORT_SYMBOL(spl_debug_mask);
-module_param(spl_debug_mask, long, 0644);
+module_param(spl_debug_mask, ulong, 0644);
MODULE_PARM_DESC(spl_debug_mask, "Debugging level mask.");
unsigned long spl_debug_printk = D_CANTMASK;
EXPORT_SYMBOL(spl_debug_printk);
-module_param(spl_debug_printk, long, 0644);
+module_param(spl_debug_printk, ulong, 0644);
MODULE_PARM_DESC(spl_debug_printk, "Console printk level mask.");
int spl_debug_mb = -1;
unsigned int spl_debug_panic_on_bug = 0;
EXPORT_SYMBOL(spl_debug_panic_on_bug);
-module_param(spl_debug_panic_on_bug, int, 0644);
+module_param(spl_debug_panic_on_bug, uint, 0644);
MODULE_PARM_DESC(spl_debug_panic_on_bug, "Panic on BUG");
static char spl_debug_file_name[PATH_MAX];
}
int
-spl_debug_vmsg(spl_debug_limit_state_t *cdls, int subsys, int mask,
- const char *file, const char *fn, const int line,
- const char *format1, va_list args, const char *format2, ...)
+spl_debug_msg(void *arg, int subsys, int mask, const char *file,
+ const char *fn, const int line, const char *format, ...)
{
+ spl_debug_limit_state_t *cdls = arg;
struct trace_cpu_data *tcd = NULL;
struct spl_debug_header header = { 0, };
struct trace_page *tage;
int i;
int remain;
+ if (subsys == 0)
+ subsys = DEBUG_SUBSYSTEM;
+
+ if (mask == 0)
+ mask = D_EMERG;
+
if (strchr(file, '/'))
file = strrchr(file, '/') + 1;
- trace_set_debug_header(&header, subsys, mask, line, CDEBUG_STACK());
+ trace_set_debug_header(&header, subsys, mask, line, 0);
tcd = trace_get_tcd();
if (tcd == NULL)
}
needed = 0;
- if (format1) {
- va_copy(ap, args);
- needed = vsnprintf(string_buf, max_nob, format1, ap);
- va_end(ap);
- }
-
- if (format2) {
+ if (format) {
remain = max_nob - needed;
if (remain < 0)
remain = 0;
- va_start(ap, format2);
- needed += vsnprintf(string_buf+needed, remain, format2, ap);
+ va_start(ap, format);
+ needed += vsnprintf(string_buf+needed, remain,
+ format, ap);
va_end(ap);
}
string_buf = trace_get_console_buffer();
needed = 0;
- if (format1 != NULL) {
- va_copy(ap, args);
- needed = vsnprintf(string_buf, TRACE_CONSOLE_BUFFER_SIZE, format1, ap);
- va_end(ap);
- }
- if (format2 != NULL) {
+ if (format != NULL) {
remain = TRACE_CONSOLE_BUFFER_SIZE - needed;
if (remain > 0) {
- va_start(ap, format2);
- needed += vsnprintf(string_buf+needed, remain, format2, ap);
+ va_start(ap, format);
+ needed += vsnprintf(string_buf+needed, remain,
+ format, ap);
va_end(ap);
}
}
return 0;
}
-EXPORT_SYMBOL(spl_debug_vmsg);
+EXPORT_SYMBOL(spl_debug_msg);
/* Do the collect_pages job on a single CPU: assumes that all other
* CPUs have been stopped during a panic. If this isn't true for
list_for_each_entry_safe(tage, tmp, &pc->pc_pages,
linkage) {
-
- __ASSERT_TAGE_INVARIANT(tage);
-
if (tage->cpu != cpu || tage->type != i)
continue;
set_fs(get_ds());
list_for_each_entry_safe(tage, tmp, &pc.pc_pages, linkage) {
- __ASSERT_TAGE_INVARIANT(tage);
-
rc = spl_filp_write(filp, page_address(tage->page),
tage->used, spl_filp_poff(filp));
if (rc != (int)tage->used) {
collect_pages(&dp, &pc);
list_for_each_entry_safe(tage, tmp, &pc.pc_pages, linkage) {
- __ASSERT_TAGE_INVARIANT(tage);
list_del(&tage->linkage);
tage_free(tage);
}
void spl_debug_bug(char *file, const char *func, const int line, int flags)
{
spl_debug_catastrophe = 1;
- spl_debug_msg(NULL, 0, D_EMERG, file, func, line, "SBUG\n");
+ spl_debug_msg(NULL, 0, D_EMERG, file, func, line, "SPL PANIC\n");
- if (in_interrupt()) {
- panic("SBUG in interrupt.\n");
- /* not reached */
- }
+ if (in_interrupt())
+ panic("SPL PANIC in interrupt.\n");
if (in_atomic() || irqs_disabled())
flags |= DL_NOTHREAD;
spl_debug_dumplog(flags);
if (spl_debug_panic_on_bug)
- panic("SBUG");
+ panic("SPL PANIC");
set_task_state(current, TASK_UNINTERRUPTIBLE);
while (1)
list_for_each_entry_safe(tage, tmp, &tcd->tcd_pages,
linkage) {
- __ASSERT_TAGE_INVARIANT(tage);
-
list_del(&tage->linkage);
tage_free(tage);
}
projects / spl / commitdiff