diff options
Diffstat (limited to 'tools/proftool.c')
| -rw-r--r-- | tools/proftool.c | 58 |
1 files changed, 39 insertions, 19 deletions
diff --git a/tools/proftool.c b/tools/proftool.c index fca45e4..c2e3809 100644 --- a/tools/proftool.c +++ b/tools/proftool.c @@ -290,7 +290,7 @@ static void usage(void) "Options:\n" " -c <cfg>\tSpecify config file\n" " -f <subtype>\tSpecify output subtype\n" - " -m <map>\tSpecify Systen.map file\n" + " -m <map>\tSpecify System.map file\n" " -o <fname>\tSpecify output file\n" " -t <fname>\tSpecify trace data file (from U-Boot 'trace calls')\n" " -v <0-4>\tSpecify verbosity\n" @@ -306,7 +306,7 @@ static void usage(void) } /** - * h_cmp_offset - bsearch() function to compare two functions bny their offset + * h_cmp_offset - bsearch() function to compare two functions by their offset * * @v1: Pointer to first function (struct func_info) * @v2: Pointer to second function (struct func_info) @@ -431,7 +431,7 @@ static struct func_info *find_func_by_offset(uint offset) static struct func_info *find_caller_by_offset(uint offset) { int low; /* least function that could be a match */ - int high; /* greated function that could be a match */ + int high; /* greatest function that could be a match */ struct func_info key; low = 0; @@ -1352,7 +1352,7 @@ static int write_pages(struct twriter *tw, enum out_format_t out_format, } if (!(func->flags & FUNCF_TRACE)) { - debug("Funcion '%s' is excluded from trace\n", + debug("Function '%s' is excluded from trace\n", func->name); skip_count++; continue; @@ -1781,7 +1781,8 @@ static int make_flame_tree(enum out_format_t out_format, * * This works by maintaining a string shared across all recursive calls. The * function name for this node is added to the existing string, to make up the - * full call-stack description. For example, on entry, @str might contain: + * full call-stack description. For example, on entry, @str_buf->data might + * contain: * * "initf_bootstage;bootstage_mark_name" * ^ @base @@ -1795,18 +1796,18 @@ static int make_flame_tree(enum out_format_t out_format, * @fout: Output file * @out_format: Output format to use * @node: Node to output (pass the whole tree at first) - * @str: String to use to build the output line (e.g. 500 charas long) - * @maxlen: Maximum length of string + * @str_buf: String buffer to use to build the output line * @base: Current base position in the string * @treep: Returns the resulting flamegraph tree * Returns 0 if OK, -1 on error */ static int output_tree(FILE *fout, enum out_format_t out_format, - const struct flame_node *node, char *str, int maxlen, + const struct flame_node *node, struct abuf *str_buf, int base) { const struct flame_node *child; int pos; + char *str = abuf_data(str_buf); if (node->count) { if (out_format == OUT_FMT_FLAMEGRAPH_CALLS) { @@ -1832,18 +1833,29 @@ static int output_tree(FILE *fout, enum out_format_t out_format, if (pos) str[pos++] = ';'; list_for_each_entry(child, &node->child_head, sibling_node) { - int len; + int len, needed; len = strlen(child->func->name); - if (pos + len + 1 >= maxlen) { - fprintf(stderr, "String too short (%d chars)\n", - maxlen); - return -1; + needed = pos + len + 1; + if (needed > abuf_size(str_buf)) { + /* + * We need to re-allocate the string buffer; increase + * its size by multiples of 500 characters. + */ + needed = 500 * ((needed / 500) + 1); + if (!abuf_realloc(str_buf, needed)) + return -1; + str = abuf_data(str_buf); + memset(str + pos, 0, abuf_size(str_buf) - pos); } strcpy(str + pos, child->func->name); - if (output_tree(fout, out_format, child, str, maxlen, - pos + len)) + if (output_tree(fout, out_format, child, str_buf, pos + len)) return -1; + /* + * Update our pointer as the string buffer might have been + * re-allocated. + */ + str = abuf_data(str_buf); } return 0; @@ -1859,16 +1871,24 @@ static int output_tree(FILE *fout, enum out_format_t out_format, static int make_flamegraph(FILE *fout, enum out_format_t out_format) { struct flame_node *tree; - char str[500]; + struct abuf str_buf; + char *str; + int ret = 0; if (make_flame_tree(out_format, &tree)) return -1; - *str = '\0'; - if (output_tree(fout, out_format, tree, str, sizeof(str), 0)) + abuf_init(&str_buf); + if (!abuf_realloc(&str_buf, 500)) return -1; - return 0; + str = abuf_data(&str_buf); + memset(str, 0, abuf_size(&str_buf)); + if (output_tree(fout, out_format, tree, &str_buf, 0)) + ret = -1; + + abuf_uninit(&str_buf); + return ret; } /** |