There is already Ivy Bridge support in libpfm4 but it is only for model 58.
We require Ivy Bridge EP model 62 support.
Locally I've change the pfmlib_intel_ivb.c file:
$ diff --git a/lib/pfmlib_intel_ivb.c b/lib/pfmlib_intel_ivb.c
index 64c6ed7..dae1325 100644
--- a/lib/pfmlib_intel_ivb.c
+++ b/lib/pfmlib_intel_ivb.c
@@ -41,6 +41,8 @@ pfm_ivb_detect(void *this)
switch (pfm_intel_x86_cfg.model) {
case 58: /* Ivy Bridge (Core i3/i5/i7 3xxx) */
break;
+ case 62: /* Ivy Bridge EP */
+ break;
default:
return PFM_ERR_NOTSUPP;
}
to support this (instead of requiring LIBPFM_FORCE_PMU to be set). The
assumption is the IVB EP counters will be a proper superset of IVB
counters like SNB EP was to SNB.
What we'd really like are official tables for IVB EP, sometime analgous
to intel_snbep_events.h (e.g., intel_ivbep_events.h).
Does this sound like a logical expectation?
Steve
On Mon, 29 Apr 2013, Vince Weaver wrote:
> Date: Mon, 29 Apr 2013 14:30:52 -0500
> From: Vince Weaver <vincent.wea...@maine.edu>
> To: perfmon2-devel@lists.sourceforge.net
> Subject: [perfmon2] Ivy Bridge Uncore support
>
>
> Intel Vol 3b says that Ivy Bridge support is more or less the same as
> Sandy Bridge.
>
> The below patch just detects IvyBridge as a SandyBridge uncore. It seems
> to work.
>
> Is this the kind of fix you want? Or would you prefer the SandyBridge
> table to be copied over as a specific IvyBridge file?
>
> Signed-off-by: Vince Weaver <vincent.wea...@maine.edu>
>
> diff --git a/lib/pfmlib_intel_snb_unc.c b/lib/pfmlib_intel_snb_unc.c
> index f4bfaba..00d7b86 100644
> --- a/lib/pfmlib_intel_snb_unc.c
> +++ b/lib/pfmlib_intel_snb_unc.c
> @@ -44,6 +44,7 @@ pfm_snb_unc_detect(void *this)
>
> switch (pfm_intel_x86_cfg.model) {
> case 42: /* Sandy Bridge (Core i7 26xx, 25xx) */
> + case 58: /* Ivy Bridge */
> break;
> default:
> return PFM_ERR_NOTSUPP;
>
>
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