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EDAC/amd64: Issue probing messages only on properly detected hardware

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amd64_edac was converted to CPU family autoprobing (from PCI device
IDs) to not have to add a new PCI device ID each time a new platform is
shipped but to support the whole family out-of-the-box.

However, this caused a lot of noise in dmesg even when the machine
doesn't have ECC DIMMs or ECC has been disabled in the BIOS:

  EDAC MC: Ver: 3.0.0
  EDAC amd64: F17h detected (node 0).
  EDAC amd64: Node 0: DRAM ECC disabled.
  EDAC amd64: F17h detected (node 1).
  EDAC amd64: Node 1: DRAM ECC disabled.
  EDAC amd64: F17h detected (node 2).
  EDAC amd64: Node 2: DRAM ECC disabled.
  EDAC amd64: F17h detected (node 3).
  EDAC amd64: Node 3: DRAM ECC disabled.
  EDAC amd64: F17h detected (node 4).
  EDAC amd64: Node 4: DRAM ECC disabled.
  EDAC amd64: F17h detected (node 5).
  EDAC amd64: Node 5: DRAM ECC disabled.
  EDAC amd64: F17h detected (node 6).
  EDAC amd64: Node 6: DRAM ECC disabled.
  EDAC amd64: F17h detected (node 7).
  EDAC amd64: Node 7: DRAM ECC disabled.

or even

$ grep EDAC dmesg.log | sed 's/\[.*\] //' | sort | uniq -c
    128 EDAC amd64: F17h detected (node 0).
    128 EDAC amd64: Node 0: DRAM ECC disabled.
      1 EDAC MC: Ver: 3.0.0

on a big machine. Yap, that's once per CPU for 128 of them.

So move the init messages after all probing has succeeded to avoid
unnecessary spew in dmesg.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210119164141.17417-1-bp@alien8.de
This commit is contained in:
Borislav Petkov 2021-01-13 20:13:30 +01:00
parent 1865bc71a8
commit 4cbcb73b1c
1 changed files with 7 additions and 7 deletions
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14
drivers/edac/amd64_edac.c
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@ -3528,8 +3528,7 @@ static bool ecc_enabled(struct amd64_pvt *pvt)
MSR_IA32_MCG_CTL, nid);
}
amd64_info("Node %d: DRAM ECC %s.\n",
nid, (ecc_en ? "enabled" : "disabled"));
edac_dbg(3, "Node %d: DRAM ECC %s.\n", nid, (ecc_en ? "enabled" : "disabled"));
if (!ecc_en || !nb_mce_en)
return false;
@ -3689,11 +3688,6 @@ static struct amd64_family_type *per_family_init(struct amd64_pvt *pvt)
return NULL;
}
amd64_info("%s %sdetected (node %d).\n", fam_type->ctl_name,
(pvt->fam == 0xf ?
(pvt->ext_model >= K8_REV_F ? "revF or later "
: "revE or earlier ")
: ""), pvt->mc_node_id);
return fam_type;
}
@ -3865,6 +3859,12 @@ static int probe_one_instance(unsigned int nid)
goto err_enable;
}
amd64_info("%s %sdetected (node %d).\n", fam_type->ctl_name,
(pvt->fam == 0xf ?
(pvt->ext_model >= K8_REV_F ? "revF or later "
: "revE or earlier ")
: ""), pvt->mc_node_id);
dump_misc_regs(pvt);
return ret;