On Fri, 10 Oct 2014 16:28:43 +0530, Hemant Kumar wrote:
> This patch adds support to dump the SDT cache onto sdtout.
> The cache data is read into a hash_list and then, it iterates through
> the hash_list to dump the data onto stdout.
>
> # ./perf sdt-cache --dump
>
> /usr/lib64/libc-2.16.so :
> %libc:lll_futex_wake
> %libc:longjmp_target
> %libc:longjmp
> %libc:lll_lock_wait_private
> %libc:lll_futex_wake
> %libc:longjmp_target
> %libc:longjmp
> %libc:setjmp
Hmm.. it seems the output is prefixed with '\t' in the code..
[SNIP]
> @@ -35,10 +45,14 @@ int cmd_sdt_cache(int argc, const char **argv, const char
> *prefix __maybe_unused
> OPT_CALLBACK('a', "add", NULL, "filename",
> "add SDT events from a file.",
> opt_add_sdt_events),
> + OPT_CALLBACK_NOOPT('D', "dump", NULL, "show SDT events",
> + "Read SDT events from cache and display.",
> + opt_show_sdt_events),
> OPT_END()
> };
> const char * const sdt_cache_usage[] = {
> "perf sdt-cache --add filename",
> + "perf sd-cache --dump",
s/sd-cache/sdt-cache/
> NULL
> };
[SNIP]
> +static void file_hash_list__display(struct hash_table *file_hash)
> +{
> + struct file_sdt_ent *file_pos;
> + struct list_head *sdt_head;
> + struct hlist_head *ent_head;
> + struct sdt_note *sdt_ptr;
> + int i;
> +
> + /* Go through all entries */
> + for (i = 0; i < SDT_HASH_SIZE; i++) {
> + /* Obtain the list head */
> + ent_head = &file_hash->ent[i];
> +
> + /* ':' are used here as delimiters */
> + hlist_for_each_entry(file_pos, ent_head, file_list) {
> + fprintf(stdout, "%s:\n", file_pos->name);
> + sdt_head = &file_pos->sdt_list;
> + list_for_each_entry(sdt_ptr, sdt_head, note_list) {
> + fprintf(stdout, "\t%%%s:%s\n",
> + sdt_ptr->provider, sdt_ptr->name);
.. Here you printed it with \t.
Other than that, looks good to me.
Thanks,
Namhyung
> + }
> + printf("\n");
> + }
> + }
> +}
> +
> +/**
> + * dump_sdt_events: Dump the SDT events on stdout
> + */
> +int dump_sdt_events(void)
> +{
> + struct hash_table file_hash;
> + int ret;
> +
> + ret = file_hash_list__init(&file_hash);
> + if (!ret)
> + file_hash_list__display(&file_hash);
> + file_hash_list__cleanup(&file_hash);
> + return ret;
> +}
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
