diff options
Diffstat (limited to 'module/os/linux/zfs/zfs_debug.c')
| -rw-r--r-- | module/os/linux/zfs/zfs_debug.c | 47 |
1 files changed, 25 insertions, 22 deletions
diff --git a/module/os/linux/zfs/zfs_debug.c b/module/os/linux/zfs/zfs_debug.c index be65f0a2e245..9ee40771fc19 100644 --- a/module/os/linux/zfs/zfs_debug.c +++ b/module/os/linux/zfs/zfs_debug.c @@ -6,7 +6,7 @@ * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE - * or http://www.opensolaris.org/os/licensing. + * or https://opensource.org/licenses/CDDL-1.0. * See the License for the specific language governing permissions * and limitations under the License. * @@ -29,13 +29,13 @@ typedef struct zfs_dbgmsg { procfs_list_node_t zdm_node; uint64_t zdm_timestamp; - int zdm_size; - char zdm_msg[1]; /* variable length allocation */ + uint_t zdm_size; + char zdm_msg[]; /* variable length allocation */ } zfs_dbgmsg_t; static procfs_list_t zfs_dbgmsgs; -static int zfs_dbgmsg_size = 0; -int zfs_dbgmsg_maxsize = 4<<20; /* 4MB */ +static uint_t zfs_dbgmsg_size = 0; +static uint_t zfs_dbgmsg_maxsize = 4<<20; /* 4MB */ /* * Internal ZFS debug messages are enabled by default. @@ -68,14 +68,14 @@ zfs_dbgmsg_show(struct seq_file *f, void *p) } static void -zfs_dbgmsg_purge(int max_size) +zfs_dbgmsg_purge(uint_t max_size) { while (zfs_dbgmsg_size > max_size) { zfs_dbgmsg_t *zdm = list_remove_head(&zfs_dbgmsgs.pl_list); if (zdm == NULL) return; - int size = zdm->zdm_size; + uint_t size = zdm->zdm_size; kmem_free(zdm, size); zfs_dbgmsg_size -= size; } @@ -135,7 +135,7 @@ __set_error(const char *file, const char *func, int line, int err) void __zfs_dbgmsg(char *buf) { - int size = sizeof (zfs_dbgmsg_t) + strlen(buf); + uint_t size = sizeof (zfs_dbgmsg_t) + strlen(buf) + 1; zfs_dbgmsg_t *zdm = kmem_zalloc(size, KM_SLEEP); zdm->zdm_size = size; zdm->zdm_timestamp = gethrestime_sec(); @@ -144,7 +144,7 @@ __zfs_dbgmsg(char *buf) mutex_enter(&zfs_dbgmsgs.pl_lock); procfs_list_add(&zfs_dbgmsgs, zdm); zfs_dbgmsg_size += size; - zfs_dbgmsg_purge(MAX(zfs_dbgmsg_maxsize, 0)); + zfs_dbgmsg_purge(zfs_dbgmsg_maxsize); mutex_exit(&zfs_dbgmsgs.pl_lock); } @@ -175,7 +175,8 @@ __dprintf(boolean_t dprint, const char *file, const char *func, newfile = file; } - i = snprintf(buf, size, "%s%s:%d:%s(): ", prefix, newfile, line, func); + i = snprintf(buf, size, "%px %s%s:%d:%s(): ", + curthread, prefix, newfile, line, func); if (i < size) { va_start(adx, fmt); @@ -220,29 +221,29 @@ __dprintf(boolean_t dprint, const char *file, const char *func, #else void -zfs_dbgmsg_print(const char *tag) +zfs_dbgmsg_print(int fd, const char *tag) { ssize_t ret __attribute__((unused)); + mutex_enter(&zfs_dbgmsgs.pl_lock); + /* * We use write() in this function instead of printf() * so it is safe to call from a signal handler. */ - ret = write(STDOUT_FILENO, "ZFS_DBGMSG(", 11); - ret = write(STDOUT_FILENO, tag, strlen(tag)); - ret = write(STDOUT_FILENO, ") START:\n", 9); + ret = write(fd, "ZFS_DBGMSG(", 11); + ret = write(fd, tag, strlen(tag)); + ret = write(fd, ") START:\n", 9); - mutex_enter(&zfs_dbgmsgs.pl_lock); for (zfs_dbgmsg_t *zdm = list_head(&zfs_dbgmsgs.pl_list); zdm != NULL; zdm = list_next(&zfs_dbgmsgs.pl_list, zdm)) { - ret = write(STDOUT_FILENO, zdm->zdm_msg, - strlen(zdm->zdm_msg)); - ret = write(STDOUT_FILENO, "\n", 1); + ret = write(fd, zdm->zdm_msg, strlen(zdm->zdm_msg)); + ret = write(fd, "\n", 1); } - ret = write(STDOUT_FILENO, "ZFS_DBGMSG(", 11); - ret = write(STDOUT_FILENO, tag, strlen(tag)); - ret = write(STDOUT_FILENO, ") END\n", 6); + ret = write(fd, "ZFS_DBGMSG(", 11); + ret = write(fd, tag, strlen(tag)); + ret = write(fd, ") END\n", 6); mutex_exit(&zfs_dbgmsgs.pl_lock); } @@ -252,6 +253,8 @@ zfs_dbgmsg_print(const char *tag) module_param(zfs_dbgmsg_enable, int, 0644); MODULE_PARM_DESC(zfs_dbgmsg_enable, "Enable ZFS debug message log"); -module_param(zfs_dbgmsg_maxsize, int, 0644); +/* BEGIN CSTYLED */ +module_param(zfs_dbgmsg_maxsize, uint, 0644); +/* END CSTYLED */ MODULE_PARM_DESC(zfs_dbgmsg_maxsize, "Maximum ZFS debug log size"); #endif |