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tools/power/x86/intel-speed-select: Account for missing sysfs for die_id

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Some older kernels will not have support to get CPU die_id from the
sysfs. This requires several back ports. But the tool depends on getting
die_id to match to correct CPU.

Relax this restriction and use die_id as 0 when die_id is missing. This
is not a problem as we don't have any multi-die processors with Intel SST
support.

This helps in running this tool on older kernels with just Intel SST
drivers back ported.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/platform-driver-x86/57d6648282491906e0e1f70fe3b9a44f72cec90d.camel@intel.com/
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Srinivas Pandruvada 2020-12-03 13:08:37 -08:00 committed by Hans de Goede
parent 07f262d80d
commit 6c4832253a
1 changed files with 5 additions and 1 deletions
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6
tools/power/x86/intel-speed-select/isst-config.c
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@ -328,8 +328,12 @@ int get_physical_die_id(int cpu)
int core_id, pkg_id, die_id;
ret = get_stored_topology_info(cpu, &core_id, &pkg_id, &die_id);
if (!ret)
if (!ret) {
if (die_id < 0)
die_id = 0;
return die_id;
}
}
if (ret < 0)