Re: [PATCH v7 5/7] perf tool: Add support for HiSilicon PCIe Tune and Trace device driver

[John Garry]

On 12/04/2022 08:41, Yicong Yang wrote:
> > > +    hisi_ptt_pmus = zalloc(sizeof(struct perf_pmu *) * (*nr_ptts));
> > > +    if (!hisi_ptt_pmus) {
> > > +        pr_err("hisi_ptt alloc failed\n");
> > > +        *err = -ENOMEM;
> > using PTR_ERR seems better, if possible
> ok will change to that. *err = -ENOMEM is used here to keep consistence with
> what spe does.

Ah, I see that we are contrained by the interface of 
auxtrace_record_init() to pass err as a pointer, so I suppose the code 
in this patch is ok to fit into that.