Arun,
I have pushed a patch that enables uncore support in libpfm4.
This is based on Lin's patch. It takes care of the priv level issue.
On Thu, Mar 17, 2011 at 10:03 PM, Arun Sharma <a...@sharma-home.net> wrote:
> On Thu, Mar 17, 2011 at 8:43 AM, Arun Sharma <a...@sharma-home.net> wrote:
>>
>> Stephane has disabled the uncore event support in libpfm4 (since the
>> patch is still not upstream yet). But by uncommenting 2-3 lines of
>> code, you should be able to get uncore events working.
>>
>
> This is the patch I'm using for uncore events with perf + libpfm4.
>
> diff --git a/include/perfmon/perf_event.h b/include/perfmon/perf_event.h
> index 4ba6738..ef68265 100644
> --- a/include/perfmon/perf_event.h
> +++ b/include/perfmon/perf_event.h
> @@ -46,6 +46,7 @@ enum perf_type_id {
> PERF_TYPE_HW_CACHE = 3,
> PERF_TYPE_RAW = 4,
> PERF_TYPE_BREAKPOINT = 5,
> + PERF_TYPE_UNCORE = 6,
> PERF_TYPE_MAX
> };
>
> diff --git a/lib/pfmlib_intel_x86_perf_event.c
> b/lib/pfmlib_intel_x86_perf_event.c
> index ab282dd..b35dccd 100644
> --- a/lib/pfmlib_intel_x86_perf_event.c
> +++ b/lib/pfmlib_intel_x86_perf_event.c
> @@ -81,10 +81,7 @@ pfm_intel_nhm_unc_get_perf_encoding(void *this,
> pfmlib_event_desc_t *e)
> if (ret != PFM_SUCCESS)
> return ret;
>
> -#if 0
> - /* XXX: uncomment when uncore support is upstream */
> attr->type = PERF_TYPE_UNCORE;
> -#endif
> attr->config = e->codes[0];
> /*
> * uncore measures at all priv levels
> diff --git a/lib/pfmlib_perf_event.c b/lib/pfmlib_perf_event.c
> index 824f9a5..d2eea5e 100644
> --- a/lib/pfmlib_perf_event.c
> +++ b/lib/pfmlib_perf_event.c
> @@ -157,7 +157,7 @@ pfmlib_perf_event_encode(void *this, const char
> *str, int dfl_plm, void *data)
>
> attr->exclude_user = !(plm & PFM_PLM3);
> attr->exclude_kernel = !(plm & PFM_PLM0);
> - attr->exclude_hv = !(plm & PFM_PLMH);
> + //attr->exclude_hv = !(plm & PFM_PLMH);
>
> __pfm_vbprintf("PERF[type=%x config=0x%"PRIx64" config1=0x%"PRIx64
> " e_u=%d e_k=%d e_hv=%d period=%"PRIu64" freq=%d"
>
> -Arun
>
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