On Wed, May 01, 2013 at 05:39:39PM -0700, Tejun Heo wrote:
[..]
> +#define throtl_log(sq, fmt, args...) do { \
> + struct throtl_grp *__tg = sq_to_tg((sq)); \
> + struct throtl_data *__td = sq_to_td((sq)); \
> char __pbuf[128]; \
> \
> - blkg_path(tg_to_blkg(tg), __pbuf, sizeof(__pbuf)); \
> - blk_add_trace_msg((tg)->td->queue, "throtl %s " fmt, __pbuf, ##args); \
> + __pbuf[0] = ' '; \
> + __pbuf[1] = '\0'; \
> + if ((__tg)) \
> + blkg_path(tg_to_blkg(__tg), __pbuf + 1, sizeof(__pbuf) - 1); \
> + blk_add_trace_msg(__td->queue, "throtl%s" fmt, __pbuf, ##args); \
^^
We need one extra space ("throtl%s "), otherwise all the messages
start right after cgroup path. We need a space between cgroup path
and actual message.
Thanks
Vivek
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