diff options
Diffstat (limited to 'lib/dynamic_debug.c')
| -rw-r--r-- | lib/dynamic_debug.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c index fdd6d9800a70..f2c5e7910bb1 100644 --- a/lib/dynamic_debug.c +++ b/lib/dynamic_debug.c @@ -88,10 +88,11 @@ static inline const char *trim_prefix(const char *path) return path + skip; } -static struct { unsigned flag:8; char opt_char; } opt_array[] = { +static const struct { unsigned flag:8; char opt_char; } opt_array[] = { { _DPRINTK_FLAGS_PRINT, 'p' }, { _DPRINTK_FLAGS_INCL_MODNAME, 'm' }, { _DPRINTK_FLAGS_INCL_FUNCNAME, 'f' }, + { _DPRINTK_FLAGS_INCL_SOURCENAME, 's' }, { _DPRINTK_FLAGS_INCL_LINENO, 'l' }, { _DPRINTK_FLAGS_INCL_TID, 't' }, { _DPRINTK_FLAGS_NONE, '_' }, @@ -301,7 +302,11 @@ static int ddebug_tokenize(char *buf, char *words[], int maxwords) } else { for (end = buf; *end && !isspace(*end); end++) ; - BUG_ON(end == buf); + if (end == buf) { + pr_err("parse err after word:%d=%s\n", nwords, + nwords ? words[nwords - 1] : "<none>"); + return -EINVAL; + } } /* `buf' is start of word, `end' is one past its end */ @@ -639,10 +644,9 @@ static int param_set_dyndbg_classnames(const char *instr, const struct kernel_pa int cls_id, totct = 0; bool wanted; - cl_str = tmp = kstrdup(instr, GFP_KERNEL); - p = strchr(cl_str, '\n'); - if (p) - *p = '\0'; + cl_str = tmp = kstrdup_and_replace(instr, '\n', '\0', GFP_KERNEL); + if (!tmp) + return -ENOMEM; /* start with previously set state-bits, then modify */ curr_bits = old_bits = *dcp->bits; @@ -808,7 +812,7 @@ const struct kernel_param_ops param_ops_dyndbg_classes = { }; EXPORT_SYMBOL(param_ops_dyndbg_classes); -#define PREFIX_SIZE 64 +#define PREFIX_SIZE 128 static int remaining(int wrote) { @@ -836,6 +840,9 @@ static char *__dynamic_emit_prefix(const struct _ddebug *desc, char *buf) if (desc->flags & _DPRINTK_FLAGS_INCL_FUNCNAME) pos += snprintf(buf + pos, remaining(pos), "%s:", desc->function); + if (desc->flags & _DPRINTK_FLAGS_INCL_SOURCENAME) + pos += snprintf(buf + pos, remaining(pos), "%s:", + trim_prefix(desc->filename)); if (desc->flags & _DPRINTK_FLAGS_INCL_LINENO) pos += snprintf(buf + pos, remaining(pos), "%d:", desc->lineno); |