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First commit of lustre style internal debug support. These 

changes bring over everything lustre had for debugging with
two exceptions.  I dropped by the debug daemon and upcalls
just because it made things a little easier.  They can be
readded easily enough if we feel they are needed.

Everything compiles and seems to work on first inspection
but I suspect there are a handful of issues still lingering
which I'll be sorting out right away.  I just wanted to get
all these changes commited and safe.  I'm getting a little
paranoid about losing them.



git-svn-id: https://outreach.scidac.gov/svn/spl/trunk@75 7e1ea52c-4ff2-0310-8f11-9dd32ca42a1c
This commit is contained in:
behlendo 2008-04-18 23:39:58 +00:00
parent 55152ebbb4
commit 57d1b18858
10 changed files with 2464 additions and 337 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
cmd/Makefile.am
View File

@ -1,7 +1,10 @@
DEFAULT_INCLUDES = -I. -I.. -I../lib
AM_CFLAGS = -g -O2 -W -Wall -Wstrict-prototypes -Wshadow
AM_CFLAGS = -g -O2 -W -Wall -Wstrict-prototypes -Wshadow -D__USE_LARGEFILE64
sbin_PROGRAMS = spl splat
spl_SOURCES = spl.c
sbin_PROGRAMS = splat
splat_SOURCES = splat.c
splat_LDFLAGS = $(top_builddir)/lib/libcommon.la

217
cmd/spl.c Normal file
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@ -0,0 +1,217 @@
#include <stdlib.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
#include <fcntl.h>
#include "../include/spl-ctl.h"
static int spl_debug_mask = ~0;
static int spl_debug_subsystem = ~0;
/* all strings nul-terminated; only the struct and hdr need to be freed */
struct dbg_line {
struct spl_debug_header *hdr;
char *file;
char *fn;
char *text;
};
static int
cmp_rec(const void *p1, const void *p2)
{
struct dbg_line *d1 = *(struct dbg_line **)p1;
struct dbg_line *d2 = *(struct dbg_line **)p2;
if (d1->hdr->ph_sec < d2->hdr->ph_sec)
return -1;
if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
d1->hdr->ph_usec < d2->hdr->ph_usec)
return -1;
if (d1->hdr->ph_sec == d2->hdr->ph_sec &&
d1->hdr->ph_usec == d2->hdr->ph_usec)
return 0;
return 1;
}
static void
print_rec(struct dbg_line **linev, int used, FILE *out)
{
int i;
for (i = 0; i < used; i++) {
struct dbg_line *line = linev[i];
struct spl_debug_header *hdr = line->hdr;
fprintf(out, "%08x:%08x:%u:%u.%06llu:%u:%u:(%s:%u:%s()) %s",
hdr->ph_subsys, hdr->ph_mask, hdr->ph_cpu_id,
hdr->ph_sec, (unsigned long long)hdr->ph_usec,
hdr->ph_stack, hdr->ph_pid, line->file,
hdr->ph_line_num, line->fn, line->text);
free(line->hdr);
free(line);
}
free(linev);
}
static int
add_rec(struct dbg_line *line, struct dbg_line ***linevp, int *lenp, int used)
{
struct dbg_line **linev = *linevp;
if (used == *lenp) {
int nlen = *lenp + 512;
int nsize = nlen * sizeof(struct dbg_line *);
linev = *linevp ? realloc(*linevp, nsize) : malloc(nsize);
if (!linev)
return 0;
*linevp = linev;
*lenp = nlen;
}
linev[used] = line;
return 1;
}
static int
parse_buffer(FILE *in, FILE *out)
{
struct dbg_line *line;
struct spl_debug_header *hdr;
char buf[4097], *p;
unsigned long dropped = 0, kept = 0;
struct dbg_line **linev = NULL;
const int phl = sizeof(hdr->ph_len);
const int phf = sizeof(hdr->ph_flags);
int rc, linev_len = 0;
while (1) {
rc = fread(buf, phl + phf, 1, in);
if (rc <= 0)
break;
hdr = (void *)buf;
if (hdr->ph_len == 0)
break;
if (hdr->ph_len > 4094) {
fprintf(stderr, "unexpected large record: %d bytes. "
"aborting.\n", hdr->ph_len);
break;
}
rc = fread(buf + phl + phf, 1, hdr->ph_len - phl - phf, in);
if (rc <= 0)
break;
if (hdr->ph_mask &&
(!(spl_debug_subsystem & hdr->ph_subsys) ||
(!(spl_debug_mask & hdr->ph_mask)))) {
dropped++;
continue;
}
line = malloc(sizeof(*line));
if (line == NULL) {
fprintf(stderr, "malloc failed; printing accumulated "
"records and exiting.\n");
break;
}
line->hdr = malloc(hdr->ph_len + 1);
if (line->hdr == NULL) {
free(line);
fprintf(stderr, "malloc failed; printing accumulated "
"records and exiting.\n");
break;
}
p = (void *)line->hdr;
memcpy(line->hdr, buf, hdr->ph_len);
p[hdr->ph_len] = '\0';
p += sizeof(*hdr);
line->file = p;
p += strlen(line->file) + 1;
line->fn = p;
p += strlen(line->fn) + 1;
line->text = p;
if (!add_rec(line, &linev, &linev_len, kept)) {
fprintf(stderr, "malloc failed; printing accumulated "
"records and exiting.\n");
break;
}
kept++;
}
if (linev) {
qsort(linev, kept, sizeof(struct dbg_line *), cmp_rec);
print_rec(linev, kept, out);
}
printf("Debug log: %lu lines, %lu kept, %lu dropped.\n",
dropped + kept, kept, dropped);
return 0;
}
int
main(int argc, char *argv[])
{
int fdin, fdout;
FILE *in, *out = stdout;
int rc, o_lf = 0;
if (argc > 3 || argc < 2) {
fprintf(stderr, "usage: %s <input> [output]\n", argv[0]);
return 0;
}
#ifdef __USE_LARGEFILE64
o_lf = O_LARGEFILE;
#endif
fdin = open(argv[1], O_RDONLY | o_lf);
if (fdin == -1) {
fprintf(stderr, "open(%s) failed: %s\n", argv[1],
strerror(errno));
return 1;
}
in = fdopen(fdin, "r");
if (in == NULL) {
fprintf(stderr, "fopen(%s) failed: %s\n", argv[1],
strerror(errno));
close(fdin);
return 1;
}
if (argc > 2) {
fdout = open(argv[2], O_CREAT | O_TRUNC | O_WRONLY | o_lf, 0600);
if (fdout == -1) {
fprintf(stderr, "open(%s) failed: %s\n", argv[2],
strerror(errno));
fclose(in);
return 1;
}
out = fdopen(fdout, "w");
if (out == NULL) {
fprintf(stderr, "fopen(%s) failed: %s\n", argv[2],
strerror(errno));
fclose(in);
close(fdout);
return 1;
}
}
rc = parse_buffer(in, out);
fclose(in);
if (out != stdout)
fclose(out);
return rc;
}

313
include/sys/debug.h
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@ -1,11 +1,318 @@
#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;
void __dprintf(const char *file, const char *func, int line, const char *fmt, ...);
void spl_set_debug_mask(unsigned long mask);
void spl_set_debug_subsys(unsigned long mask);
#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 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
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;
} 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; trace_data[i] != NULL; 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) \
for (i = 0; trace_data[i] && \
(tcd = &(*trace_data[i])[smp_processor_id()].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;
};
/* ASSERTION that is safe to use within the debug system */
#define __ASSERT(cond) \
do { \
if (unlikely(!(cond))) { \
printk(KERN_ERR "ASSERTION("#cond") failed"); \
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 { \
if (unlikely(!(cond))) { \
spl_debug_msg(NULL, DEBUG_SUBSYSTEM, D_EMERG, \
__FILE__, __FUNCTION__, __LINE__, \
"ASSERTION(" #cond ") failed\n"); \
spl_debug_bug(__FILE__, __FUNCTION__, __LINE__); \
} \
} while (0)
#define ASSERTF(cond, fmt, a...) \
do { \
if (unlikely(!(cond))) { \
spl_debug_msg(NULL, DEBUG_SUBSYSTEM, D_EMERG, \
__FILE__, __FUNCTION__, __LINE__, \
"ASSERTION(" #cond ") failed:" fmt, \
## a); \
spl_debug_bug(__FILE__, __FUNCTION__, __LINE__) \
} \
} while (0)
#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE, FMT, CAST) \
do { \
const TYPE __left = (TYPE)(LEFT); \
const TYPE __right = (TYPE)(RIGHT); \
if (!(__left OP __right)) { \
spl_debug_msg(NULL, DEBUG_SUBSYSTEM, D_EMERG, \
__FILE__, __FUNCTION__, __LINE__, \
"VERIFY3(" FMT " " #OP " " FMT ")\n", \
CAST __left, CAST __right); \
spl_debug_bug(__FILE__, __FUNCTION__, __LINE__) \
} \
} while (0)
#define VERIFY3S(x,y,z) VERIFY3_IMPL(x, y, z, int64_t, "%ld", (long))
#define VERIFY3U(x,y,z) VERIFY3_IMPL(x, y, z, uint64_t, "%lu", (unsigned 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 VERIFY(x) ASSERT(x)
#define SBUG() spl_debug_bug(__FILE__, __FUNCTION__, __LINE__);
#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)
#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__ */
#define __CHECK_STACK(file, func, line) \
do { \
unsigned long _stack = CDEBUG_STACK(); \
\
if (_stack > (3*THREAD_SIZE/4) && _stack > spl_debug_stack) { \
spl_debug_stack = _stack; \
spl_debug_msg(NULL, D_TRACE, D_WARNING, \
file, func, line, \
"Exceeded maximum safe stack " \
"%lu/%lu\n", _stack, THREAD_SIZE); \
__ASSERT(0); \
} \
} while (0)
#define CHECK_STACK()__CHECK_STACK(__FILE__, __func__, __LINE__)
#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); \
} 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 dprintf(fmt, a...) CDEBUG_LIMIT(D_INFO, fmt, ## 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; \
} 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 ENTRY \
do { \
CDEBUG(D_TRACE, "Process entered\n"); \
} while (0)
#define EXIT \
do { \
CDEBUG(D_TRACE, "Process leaving\n"); \
} while(0)
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(void);
extern void spl_debug_dumpstack(struct task_struct *tsk);
extern void spl_debug_bug(char *file, const char *func, const int line);
extern int spl_debug_clear_buffer(void);
extern int spl_debug_mark_buffer(char *text);
#endif /* SPL_DEBUG_H */

9
include/sys/proc.h Normal file
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@ -0,0 +1,9 @@
#ifndef _SPL_PROC_H
#define _SPL_PROC_H
#include <linux/proc_fs.h>
int proc_init(void);
void proc_fini(void);
#endif /* SPL_PROC_H */

26
include/sys/sysmacros.h
View File

@ -6,6 +6,7 @@ extern "C" {
#endif
#include <linux/module.h>
#include <sys/debug.h>
#include <sys/varargs.h>
#include <sys/zone.h>
#include <sys/signal.h>
@ -73,26 +74,6 @@ extern "C" {
#define bzero(ptr,size) memset(ptr,0,size)
#define bcopy(src,dest,size) memcpy(dest,src,size)
#define bcmp(src,dest,size) memcmp((src), (dest), (size_t)(size))
#define ASSERT(x) BUG_ON(!(x))
#define VERIFY(x) ASSERT(x)
#define VERIFY3_IMPL(LEFT, OP, RIGHT, TYPE, FMT, CAST) do { \
const TYPE __left = (TYPE)(LEFT); \
const TYPE __right = (TYPE)(RIGHT); \
if (!(__left OP __right)) { \
printk("spl: Error VERIFY3(" FMT " " #OP " " FMT ")\n", \
CAST __left, CAST __right); \
BUG(); \
} \
} while (0)
#define VERIFY3S(x, y, z) VERIFY3_IMPL(x, y, z, int64_t, "%ld", (long))
#define VERIFY3U(x, y, z) VERIFY3_IMPL(x, y, z, uint64_t, "%lu", (unsigned 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)
/* Dtrace probes do not exist in the linux kernel */
@ -117,12 +98,13 @@ extern "C" {
#define DTRACE_PROBE4(a, b, c, d, e, f, g, h, i) ((void)0)
/* Missing globals */
extern unsigned long spl_hostid;
extern char spl_hw_serial[11];
extern int p0;
extern char hw_serial[11];
/* Missing misc functions */
extern int highbit(unsigned long i);
extern int ddi_strtoul(const char *hw_serial, char **nptr,
extern int ddi_strtoul(const char *str, char **nptr,
int base, unsigned long *result);
#define makedevice(maj,min) makedev(maj,min)

2
modules/spl/Makefile.in
View File

@ -9,6 +9,8 @@ CPPFLAGS += @KERNELCPPFLAGS@
# Solaris porting layer module
obj-m := spl.o
spl-objs += spl-debug.o
spl-objs += spl-proc.o
spl-objs += spl-kmem.o
spl-objs += spl-thread.o
spl-objs += spl-taskq.o

1293
modules/spl/spl-debug.c Normal file
View File

File diff suppressed because it is too large Load Diff

354
modules/spl/spl-generic.c
View File

@ -3,32 +3,21 @@
#include <sys/vnode.h>
#include <sys/kmem.h>
#include <sys/debug.h>
#include <linux/proc_fs.h>
#include <sys/proc.h>
#include <linux/kmod.h>
#include "config.h"
/*
* Generic support
*/
static char spl_debug_buffer1[1024];
static char spl_debug_buffer2[1024];
static spinlock_t spl_debug_lock = SPIN_LOCK_UNLOCKED;
#ifdef DEBUG_SUBSYSTEM
#undef DEBUG_SUBSYSTEM
#endif
#define DEBUG_SUBSYSTEM S_GENERIC
unsigned long spl_debug_mask = 0;
unsigned long spl_debug_subsys = 0xff;
unsigned long spl_hostid = 0;
char hw_serial[11] = "<none>";
EXPORT_SYMBOL(spl_debug_mask);
EXPORT_SYMBOL(spl_debug_subsys);
EXPORT_SYMBOL(spl_hostid);
EXPORT_SYMBOL(hw_serial);
static struct proc_dir_entry *spl_proc_root = NULL;
static struct proc_dir_entry *spl_proc_debug_mask = NULL;
static struct proc_dir_entry *spl_proc_debug_subsys = NULL;
static struct proc_dir_entry *spl_proc_hostid = NULL;
static struct proc_dir_entry *spl_proc_hw_serial = NULL;
char spl_hw_serial[11] = "<none>";
EXPORT_SYMBOL(spl_hw_serial);
int p0 = 0;
EXPORT_SYMBOL(p0);
@ -36,14 +25,14 @@ EXPORT_SYMBOL(p0);
vmem_t *zio_alloc_arena = NULL;
EXPORT_SYMBOL(zio_alloc_arena);
int
highbit(unsigned long i)
{
register int h = 1;
ENTRY;
if (i == 0)
return (0);
RETURN(0);
#if BITS_PER_LONG == 64
if (i & 0xffffffff00000000ul) {
h += 32; i >>= 32;
@ -64,7 +53,7 @@ highbit(unsigned long i)
if (i & 0x2) {
h += 1;
}
return (h);
RETURN(h);
}
EXPORT_SYMBOL(highbit);
@ -76,324 +65,75 @@ ddi_strtoul(const char *str, char **nptr, int base, unsigned long *result)
}
EXPORT_SYMBOL(ddi_strtoul);
/* XXX: Not the most efficient debug function ever. This should be re-done
* as an internal per-cpu in-memory debug log accessable via /proc/. Not as
* a shared global buffer everything gets serialize though. That said I'll
* worry about performance considerations once I've dealt with correctness.
*/
void
__dprintf(const char *file, const char *func, int line, const char *fmt, ...)
{
char *sfp;
struct timeval tv;
unsigned long flags;
va_list ap;
sfp = strrchr(file, '/');
do_gettimeofday(&tv);
/* XXX: This is particularly bad for performance, but we need to
* disable irqs here or two __dprintf()'s may deadlock on each
* other if one if called from an irq handler. This is yet another
* reason why we really, really, need an internal debug log.
*/
spin_lock_irqsave(&spl_debug_lock, flags);
memset(spl_debug_buffer1, 0, 1024);
memset(spl_debug_buffer2, 0, 1024);
snprintf(spl_debug_buffer1, 1023,
"spl: %lu.%06lu:%d:%u:%s:%d:%s(): ",
tv.tv_sec, tv.tv_usec, current->pid,
smp_processor_id(),
sfp == NULL ? file : sfp + 1,
line, func);
va_start(ap, fmt);
vsnprintf(spl_debug_buffer2, 1023, fmt, ap);
va_end(ap);
printk("%s%s", spl_debug_buffer1, spl_debug_buffer2);
spin_unlock_irqrestore(&spl_debug_lock, flags);
}
EXPORT_SYMBOL(__dprintf);
static int
spl_proc_rd_generic_ul(char *page, char **start, off_t off,
int count, int *eof, unsigned long val)
set_hostid(void)
{
*start = page;
*eof = 1;
if (off || count > PAGE_SIZE)
return 0;
return snprintf(page, PAGE_SIZE, "0x%lx\n", val & 0xffffffff);
}
static int
spl_proc_rd_debug_mask(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int rc;
spin_lock(&spl_debug_lock);
rc = spl_proc_rd_generic_ul(page, start, off, count,
eof, spl_debug_mask);
spin_unlock(&spl_debug_lock);
return rc;
}
static int
spl_proc_rd_debug_subsys(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
int rc;
spin_lock(&spl_debug_lock);
rc = spl_proc_rd_generic_ul(page, start, off, count,
eof, spl_debug_subsys);
spin_unlock(&spl_debug_lock);
return rc;
}
static int
spl_proc_rd_hostid(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
*start = page;
*eof = 1;
if (off || count > PAGE_SIZE)
return 0;
return snprintf(page, PAGE_SIZE, "%lx\n", spl_hostid & 0xffffffff);
}
static int
spl_proc_rd_hw_serial(char *page, char **start, off_t off,
int count, int *eof, void *data)
{
*start = page;
*eof = 1;
if (off || count > PAGE_SIZE)
return 0;
strncpy(page, hw_serial, 11);
return strlen(page);
}
static int
spl_proc_wr_generic_ul(const char *ubuf, unsigned long count,
unsigned long *val, int base)
{
char *end, kbuf[32];
if (count >= sizeof(kbuf))
return -EOVERFLOW;
if (copy_from_user(kbuf, ubuf, count))
return -EFAULT;
kbuf[count] = '\0';
*val = (int)simple_strtoul(kbuf, &end, base);
if (kbuf == end)
return -EINVAL;
return 0;
}
static int
spl_proc_wr_debug_mask(struct file *file, const char *ubuf,
unsigned long count, void *data, int mode)
{
unsigned long val;
int rc;
rc = spl_proc_wr_generic_ul(ubuf, count, &val, 16);
if (rc)
return rc;
spin_lock(&spl_debug_lock);
spl_debug_mask = val;
spin_unlock(&spl_debug_lock);
return count;
}
static int
spl_proc_wr_debug_subsys(struct file *file, const char *ubuf,
unsigned long count, void *data, int mode)
{
unsigned long val;
int rc;
rc = spl_proc_wr_generic_ul(ubuf, count, &val, 16);
if (rc)
return rc;
spin_lock(&spl_debug_lock);
spl_debug_subsys = val;
spin_unlock(&spl_debug_lock);
return count;
}
static int
spl_proc_wr_hostid(struct file *file, const char *ubuf,
unsigned long count, void *data, int mode)
{
unsigned long val;
int rc;
rc = spl_proc_wr_generic_ul(ubuf, count, &val, 16);
if (rc)
return rc;
spl_hostid = val;
sprintf(hw_serial, "%lu\n", ((long)val >= 0) ? val : -val);
return count;
}
static struct proc_dir_entry *
spl_register_proc_entry(const char *name, mode_t mode,
struct proc_dir_entry *parent, void *data,
void *read_proc, void *write_proc)
{
struct proc_dir_entry *entry;
entry = create_proc_entry(name, mode, parent);
if (!entry)
return ERR_PTR(-EINVAL);
entry->data = data;
entry->read_proc = read_proc;
entry->write_proc = write_proc;
return entry;
} /* register_proc_entry() */
void spl_set_debug_mask(unsigned long mask) {
spin_lock(&spl_debug_lock);
spl_debug_mask = mask;
spin_unlock(&spl_debug_lock);
}
EXPORT_SYMBOL(spl_set_debug_mask);
void spl_set_debug_subsys(unsigned long mask) {
spin_lock(&spl_debug_lock);
spl_debug_subsys = mask;
spin_unlock(&spl_debug_lock);
}
EXPORT_SYMBOL(spl_set_debug_subsys);
static int __init spl_init(void)
{
int rc = 0;
char sh_path[] = "/bin/sh";
char *argv[] = { sh_path,
"-c",
"/usr/bin/hostid >/proc/spl/hostid",
"/usr/bin/hostid >/proc/sys/spl/hostid",
NULL };
char *envp[] = { "HOME=/",
"TERM=linux",
"PATH=/sbin:/usr/sbin:/bin:/usr/bin",
NULL };
spl_proc_root = proc_mkdir("spl", NULL);
if (!spl_proc_root) {
printk("spl: Error unable to create /proc/spl/ directory\n");
return -EINVAL;
/* Doing address resolution in the kernel is tricky and just
* not a good idea in general. So to set the proper 'spl_hw_serial'
* use the usermodehelper support to ask '/bin/sh' to run
* '/usr/bin/hostid' and redirect the result to /proc/sys/spl/hostid
* for us to use. It's a horific solution but it will do for now.
*/
return call_usermodehelper(sh_path, argv, envp, 1);
}
spl_proc_debug_mask = spl_register_proc_entry("debug_mask", 0644,
spl_proc_root, NULL,
spl_proc_rd_debug_mask,
spl_proc_wr_debug_mask);
if (IS_ERR(spl_proc_debug_mask)) {
rc = PTR_ERR(spl_proc_debug_mask);
goto out;
}
static int __init spl_init(void)
{
int rc = 0;
ENTRY;
spl_proc_debug_subsys = spl_register_proc_entry("debug_subsys", 0644,
spl_proc_root, NULL,
spl_proc_rd_debug_subsys,
spl_proc_wr_debug_subsys);
if (IS_ERR(spl_proc_debug_subsys)) {
rc = PTR_ERR(spl_proc_debug_subsys);
goto out2;
}
spl_proc_hostid = spl_register_proc_entry("hostid", 0644,
spl_proc_root, NULL,
spl_proc_rd_hostid,
spl_proc_wr_hostid);
if (IS_ERR(spl_proc_hostid)) {
rc = PTR_ERR(spl_proc_hostid);
goto out3;
}
spl_proc_hw_serial = spl_register_proc_entry("hw_serial", 0444,
spl_proc_root, NULL,
spl_proc_rd_hw_serial,
NULL);
if (IS_ERR(spl_proc_hw_serial)) {
rc = PTR_ERR(spl_proc_hw_serial);
goto out4;
}
if ((rc = debug_init()))
RETURN(rc);
if ((rc = kmem_init()))
goto out4;
GOTO(out , rc);
if ((rc = vn_init()))
goto out4;
GOTO(out2, rc);
/* Doing address resolution in the kernel is tricky and just
* not a good idea in general. So to set the proper 'hw_serial'
* use the usermodehelper support to ask '/bin/sh' to run
* '/usr/bin/hostid' and redirect the result to /proc/spl/hostid
* for us to use. It's a horific solution but it will do.
*/
if ((rc = call_usermodehelper(sh_path, argv, envp, 1)))
goto out4;
if ((rc = proc_init()))
GOTO(out3, rc);
printk("spl: Loaded Solaris Porting Layer v%s\n", VERSION);
return 0;
if ((rc = set_hostid()))
GOTO(out4, rc = -EADDRNOTAVAIL);
CWARN("Loaded Solaris Porting Layer v%s\n", VERSION);
RETURN(rc);
out4:
if (spl_proc_hw_serial)
remove_proc_entry("hw_serial", spl_proc_root);
proc_fini();
out3:
if (spl_proc_hostid)
remove_proc_entry("hostid", spl_proc_root);
vn_fini();
out2:
if (spl_proc_debug_mask)
remove_proc_entry("debug_mask", spl_proc_root);
if (spl_proc_debug_subsys)
remove_proc_entry("debug_subsys", spl_proc_root);
kmem_fini();
out:
remove_proc_entry("spl", NULL);
debug_fini();
return rc;
printk("SPL: Failed to Load Solaris Porting Layer v%s, "
"rc = %d\n", VERSION, rc);
RETURN(rc);
}
static void spl_fini(void)
{
ENTRY;
CWARN("Unloaded Solaris Porting Layer v%s\n", VERSION);
proc_fini();
vn_fini();
kmem_fini();
debug_fini();
remove_proc_entry("hw_serial", spl_proc_root);
remove_proc_entry("hostid", spl_proc_root);
remove_proc_entry("debug_subsys", spl_proc_root);
remove_proc_entry("debug_mask", spl_proc_root);
remove_proc_entry("spl", NULL);
return;
EXIT;
}
module_init(spl_init);

574
modules/spl/spl-proc.c Normal file
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@ -0,0 +1,574 @@
#include <linux/proc_fs.h>
#include <linux/kmod.h>
#include <linux/uaccess.h>
#include <linux/ctype.h>
#include <linux/sysctl.h>
#include <sys/sysmacros.h>
#include <sys/kmem.h>
#include <sys/debug.h>
#include "config.h"
#ifdef DEBUG_SUBSYSTEM
#undef DEBUG_SUBSYSTEM
#endif
#define DEBUG_SUBSYSTEM S_PROC
static struct ctl_table_header *spl_header = NULL;
static unsigned long table_min = 0;
static unsigned long table_max = ~0;
#define CTL_SPL 0x87
enum {
CTL_DEBUG_SUBSYS = 1, /* Debug subsystem */
CTL_DEBUG_MASK, /* Debug mask */
CTL_DEBUG_PRINTK, /* Force all messages to console */
CTL_DEBUG_MB, /* Debug buffer size */
CTL_DEBUG_BINARY, /* Include binary data in buffer */
CTL_DEBUG_CATASTROPHE, /* Set if we have BUG'd or panic'd */
CTL_DEBUG_PANIC_ON_BUG, /* Set if we should panic on BUG */
CTL_DEBUG_PATH, /* Dump log location */
CTL_DEBUG_DUMP, /* Dump debug buffer to file */
CTL_DEBUG_FORCE_BUG, /* Hook to force a BUG */
CTL_CONSOLE_RATELIMIT, /* Ratelimit console messages */
CTL_CONSOLE_MAX_DELAY_CS, /* Max delay at which we skip messages */
CTL_CONSOLE_MIN_DELAY_CS, /* Init delay at which we skip messages */
CTL_CONSOLE_BACKOFF, /* Delay increase factor */
CTL_STACK_SIZE, /* Max observed stack size */
#ifdef DEBUG_KMEM
CTL_KMEM_KMEMUSED, /* Crrently alloc'd kmem bytes */
CTL_KMEM_KMEMMAX, /* Max alloc'd by kmem bytes */
CTL_KMEM_VMEMUSED, /* Currently alloc'd vmem bytes */
CTL_KMEM_VMEMMAX, /* Max alloc'd by vmem bytes */
#endif
CTL_HOSTID, /* Host id reported by /usr/bin/hostid */
CTL_HW_SERIAL, /* Hardware serial number from hostid */
};
static int
proc_copyin_string(char *kbuffer, int kbuffer_size,
const char *ubuffer, int ubuffer_size)
{
int size;
if (ubuffer_size > kbuffer_size)
return -EOVERFLOW;
if (copy_from_user((void *)kbuffer, (void *)ubuffer, ubuffer_size))
return -EFAULT;
/* strip trailing whitespace */
size = strnlen(kbuffer, ubuffer_size);
while (size-- >= 0)
if (!isspace(kbuffer[size]))
break;
/* empty string */
if (size < 0)
return -EINVAL;
/* no space to terminate */
if (size == kbuffer_size)
return -EOVERFLOW;
kbuffer[size + 1] = 0;
return 0;
}
static int
proc_copyout_string(char *ubuffer, int ubuffer_size,
const char *kbuffer, char *append)
{
/* NB if 'append' != NULL, it's a single character to append to the
* copied out string - usually "\n", for /proc entries and
* (i.e. a terminating zero byte) for sysctl entries
*/
int size = MIN(strlen(kbuffer), ubuffer_size);
if (copy_to_user(ubuffer, kbuffer, size))
return -EFAULT;
if (append != NULL && size < ubuffer_size) {
if (copy_to_user(ubuffer + size, append, 1))
return -EFAULT;
size++;
}
return size;
}
static int
proc_dobitmasks(struct ctl_table *table, int write, struct file *filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
unsigned long *mask = table->data;
int is_subsys = (mask == &spl_debug_subsys) ? 1 : 0;
int is_printk = (mask == &spl_debug_printk) ? 1 : 0;
int size = 512, rc;
char *str;
ENTRY;
str = kmem_alloc(size, KM_SLEEP);
if (str == NULL)
RETURN(-ENOMEM);
if (write) {
rc = proc_copyin_string(str, size, buffer, *lenp);
if (rc < 0)
RETURN(rc);
rc = spl_debug_str2mask(mask, str, is_subsys);
/* Always print BUG/ASSERT to console, so keep this mask */
if (is_printk)
*mask |= D_EMERG;
*ppos += *lenp;
} else {
rc = spl_debug_mask2str(str, size, *mask, is_subsys);
if (*ppos >= rc)
rc = 0;
else
rc = proc_copyout_string(buffer, *lenp,
str + *ppos, "\n");
if (rc >= 0) {
*lenp = rc;
*ppos += rc;
}
}
kmem_free(str, size);
RETURN(rc);
}
static int
proc_debug_mb(struct ctl_table *table, int write, struct file *filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
char str[32];
int rc, len;
ENTRY;
if (write) {
rc = proc_copyin_string(str, sizeof(str), buffer, *lenp);
if (rc < 0)
RETURN(rc);
rc = spl_debug_set_mb(simple_strtoul(str, NULL, 0));
*ppos += *lenp;
} else {
len = snprintf(str, sizeof(str), "%d", spl_debug_get_mb());
if (*ppos >= len)
rc = 0;
else
rc = proc_copyout_string(buffer, *lenp, str + *ppos, "\n");
if (rc >= 0) {
*lenp = rc;
*ppos += rc;
}
}
RETURN(rc);
}
static int
proc_dump_kernel(struct ctl_table *table, int write, struct file *filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
ENTRY;
if (write) {
spl_debug_dumplog();
*ppos += *lenp;
} else {
*lenp = 0;
}
RETURN(0);
}
static int
proc_force_bug(struct ctl_table *table, int write, struct file *filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
ENTRY;
if (write) {
CERROR("Crashing due to forced BUG\n");
BUG();
/* Unreachable */
} else {
*lenp = 0;
}
RETURN(0);
}
static int
proc_console_max_delay_cs(struct ctl_table *table, int write, struct file *filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
int rc, max_delay_cs;
struct ctl_table dummy = *table;
long d;
ENTRY;
dummy.data = &max_delay_cs;
dummy.proc_handler = &proc_dointvec;
if (write) {
max_delay_cs = 0;
rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos);
if (rc < 0)
RETURN(rc);
if (max_delay_cs <= 0)
RETURN(-EINVAL);
d = (max_delay_cs * HZ) / 100;
if (d == 0 || d < spl_console_min_delay)
RETURN(-EINVAL);
spl_console_max_delay = d;
} else {
max_delay_cs = (spl_console_max_delay * 100) / HZ;
rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos);
}
RETURN(rc);
}
static int
proc_console_min_delay_cs(struct ctl_table *table, int write, struct file *filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
int rc, min_delay_cs;
struct ctl_table dummy = *table;
long d;
ENTRY;
dummy.data = &min_delay_cs;
dummy.proc_handler = &proc_dointvec;
if (write) {
min_delay_cs = 0;
rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos);
if (rc < 0)
RETURN(rc);
if (min_delay_cs <= 0)
RETURN(-EINVAL);
d = (min_delay_cs * HZ) / 100;
if (d == 0 || d > spl_console_max_delay)
RETURN(-EINVAL);
spl_console_min_delay = d;
} else {
min_delay_cs = (spl_console_min_delay * 100) / HZ;
rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos);
}
RETURN(rc);
}
static int
proc_console_backoff(struct ctl_table *table, int write, struct file *filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
int rc, backoff;
struct ctl_table dummy = *table;
ENTRY;
dummy.data = &backoff;
dummy.proc_handler = &proc_dointvec;
if (write) {
backoff = 0;
rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos);
if (rc < 0)
RETURN(rc);
if (backoff <= 0)
RETURN(-EINVAL);
spl_console_backoff = backoff;
} else {
backoff = spl_console_backoff;
rc = proc_dointvec(&dummy, write, filp, buffer, lenp, ppos);
}
RETURN(rc);
}
static int
proc_doatomic64(struct ctl_table *table, int write, struct file *filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
int rc = 0;
unsigned long min = 0, max = ~0, val;
struct ctl_table dummy = *table;
ENTRY;
dummy.data = &val;
dummy.proc_handler = &proc_dointvec;
dummy.extra1 = &min;
dummy.extra2 = &max;
if (write) {
*ppos += *lenp;
} else {
val = atomic_read((atomic64_t *)table->data);
rc = proc_doulongvec_minmax(&dummy, write, filp,
buffer, lenp, ppos);
}
RETURN(rc);
}
static int
proc_dohostid(struct ctl_table *table, int write, struct file *filp,
void __user *buffer, size_t *lenp, loff_t *ppos)
{
int len, rc = 0;
unsigned long val;
char *end, str[32];
ENTRY;
if (write) {
/* We can't use proc_doulongvec_minmax() in the write
* case hear because hostid while a hex value has no
* leading 0x which confuses the helper function. */
rc = proc_copyin_string(str, sizeof(str), buffer, *lenp);
if (rc < 0)
RETURN(rc);
val = simple_strtoul(str, &end, 16);
if (str == end)
RETURN(-EINVAL);
spl_hostid = val;
sprintf(spl_hw_serial, "%lu", ((long)val >= 0) ? val : -val);
*ppos += *lenp;
} else {
len = snprintf(str, sizeof(str), "%lx", spl_hostid);
if (*ppos >= len)
rc = 0;
else
rc = proc_copyout_string(buffer, *lenp, str + *ppos, "\n");
if (rc >= 0) {
*lenp = rc;
*ppos += rc;
}
}
RETURN(rc);
}
static struct ctl_table spl_table[] = {
/* NB No .strategy entries have been provided since
* sysctl(8) prefers to go via /proc for portability.
*/
{
.ctl_name = CTL_DEBUG_SUBSYS,
.procname = "debug_subsystem",
.data = &spl_debug_subsys,
.maxlen = sizeof(unsigned long),
.mode = 0644,
.proc_handler = &proc_dobitmasks
},
{
.ctl_name = CTL_DEBUG_MASK,
.procname = "debug_mask",
.data = &spl_debug_mask,
.maxlen = sizeof(unsigned long),
.mode = 0644,
.proc_handler = &proc_dobitmasks
},
{
.ctl_name = CTL_DEBUG_PRINTK,
.procname = "debug_printk",
.data = &spl_debug_printk,
.maxlen = sizeof(unsigned long),
.mode = 0644,
.proc_handler = &proc_dobitmasks
},
{
.ctl_name = CTL_DEBUG_MB,
.procname = "debug_mb",
.mode = 0644,
.proc_handler = &proc_debug_mb,
},
{
.ctl_name = CTL_DEBUG_BINARY,
.procname = "debug_binary",
.data = &spl_debug_binary,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{
.ctl_name = CTL_DEBUG_CATASTROPHE,
.procname = "catastrophe",
.data = &spl_debug_catastrophe,
.maxlen = sizeof(int),
.mode = 0444,
.proc_handler = &proc_dointvec,
},
{
.ctl_name = CTL_DEBUG_PANIC_ON_BUG,
.procname = "panic_on_bug",
.data = &spl_debug_panic_on_bug,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec
},
{
.ctl_name = CTL_DEBUG_PATH,
.procname = "debug_path",
.data = spl_debug_file_path,
.maxlen = sizeof(spl_debug_file_path),
.mode = 0644,
.proc_handler = &proc_dostring,
},
{
.ctl_name = CTL_DEBUG_DUMP,
.procname = "debug_dump",
.mode = 0200,
.proc_handler = &proc_dump_kernel,
},
{ .ctl_name = CTL_DEBUG_FORCE_BUG,
.procname = "force_bug",
.mode = 0200,
.proc_handler = &proc_force_bug,
},
{
.ctl_name = CTL_CONSOLE_RATELIMIT,
.procname = "console_ratelimit",
.data = &spl_console_ratelimit,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{
.ctl_name = CTL_CONSOLE_MAX_DELAY_CS,
.procname = "console_max_delay_centisecs",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_console_max_delay_cs,
},
{
.ctl_name = CTL_CONSOLE_MIN_DELAY_CS,
.procname = "console_min_delay_centisecs",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_console_min_delay_cs,
},
{
.ctl_name = CTL_CONSOLE_BACKOFF,
.procname = "console_backoff",
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_console_backoff,
},
{
.ctl_name = CTL_STACK_SIZE,
.procname = "stack_max",
.data = &spl_debug_stack,
.maxlen = sizeof(int),
.mode = 0444,
.proc_handler = &proc_dointvec,
},
#ifdef DEBUG_KMEM
{
.ctl_name = CTL_KMEM_KMEMUSED,
.procname = "kmem_used",
.data = &kmem_alloc_used,
.maxlen = sizeof(atomic64_t),
.mode = 0444,
.proc_handler = &proc_doatomic64,
},
{
.ctl_name = CTL_KMEM_KMEMMAX,
.procname = "kmem_max",
.data = &kmem_alloc_max,
.maxlen = sizeof(unsigned long),
.extra1 = &table_min,
.extra2 = &table_max,
.mode = 0444,
.proc_handler = &proc_doulongvec_minmax,
},
{
.ctl_name = CTL_KMEM_VMEMUSED,
.procname = "vmem_used",
.data = &vmem_alloc_used,
.maxlen = sizeof(atomic64_t),
.mode = 0444,
.proc_handler = &proc_doatomic64,
},
{
.ctl_name = CTL_KMEM_VMEMMAX,
.procname = "vmem_max",
.data = &vmem_alloc_max,
.maxlen = sizeof(unsigned long),
.extra1 = &table_min,
.extra2 = &table_max,
.mode = 0444,
.proc_handler = &proc_doulongvec_minmax,
},
#endif
{
.ctl_name = CTL_HOSTID,
.procname = "hostid",
.data = &spl_hostid,
.maxlen = sizeof(unsigned long),
.mode = 0644,
.proc_handler = &proc_dohostid,
},
{
.ctl_name = CTL_HW_SERIAL,
.procname = "hw_serial",
.data = spl_hw_serial,
.maxlen = sizeof(spl_hw_serial),
.mode = 0444,
.proc_handler = &proc_dostring,
},
{ 0 },
};
static struct ctl_table spl_dir_table[] = {
{
.ctl_name = CTL_SPL,
.procname = "spl",
.mode = 0555,
.child = spl_table,
},
{0}
};
int
proc_init(void)
{
ENTRY;
#ifdef CONFIG_SYSCTL
spl_header = register_sysctl_table(spl_dir_table, 0);
if (spl_header == NULL)
RETURN(-EUNATCH);
#endif
RETURN(0);
}
void
proc_fini(void)
{
ENTRY;
#ifdef CONFIG_SYSCTL
ASSERT(spl_header != NULL);
unregister_sysctl_table(spl_header);
#endif
EXIT;
}

4
modules/spl/spl-vnode.c
View File

@ -588,7 +588,7 @@ vn_fini(void)
rc = kmem_cache_destroy(vn_file_cache);
if (rc)
printk("spl: Warning leaked vn_file_cache objects\n");
printk("spl: Warning leaked vn_file_cache objects, %d\n", rc);
vn_file_cache = NULL;
spin_unlock(&vn_file_lock);
@ -598,7 +598,7 @@ vn_fini(void)
rc = kmem_cache_destroy(vn_cache);
if (rc)
printk("spl: Warning leaked vn_cache objects\n");
printk("spl: Warning leaked vn_cache objects, %d\n", rc);
return;
} /* vn_fini() */