tools/power/x86/intel-speed-select: Account for missing sysfs for die_id
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 <[email protected]>
Link: https://lore.kernel.org/platform-driver-x86/[email protected]/
Signed-off-by: Hans de Goede <[email protected]>
diff --git a/tools/power/x86/intel-speed-select/isst-config.c b/tools/power/x86/intel-speed-select/isst-config.c
index cd089a5..271bc79 100644
--- a/tools/power/x86/intel-speed-select/isst-config.c
+++ b/tools/power/x86/intel-speed-select/isst-config.c
@@ -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)
