thermal: intel: hfi: Increase the number of CPU capabilities per netlink event

The number of updated CPU capabilities per netlink event is hard-coded to
16. On systems with more than 16 CPUs (a common case), it takes more than
one thermal netlink event to relay all the new capabilities after an HFI
interrupt. This adds unnecessary overhead to both the kernel and user space
entities.

Increase the number of CPU capabilities updated per event to 64. Any system
with 64 CPUs or less can now update all the capabilities in a single
thermal netlink event.

Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/thermal/intel/intel_hfi.c b/drivers/thermal/intel/intel_hfi.c
index c6658f8c5cca64e92c75099689ce43e8de36da5d..a180a98bb9f154201775eaee162ca2524421bde8 100644 (file)
--- a/drivers/thermal/intel/intel_hfi.c
+++ b/drivers/thermal/intel/intel_hfi.c
@@ -167,7 +167,7 @@ static DEFINE_MUTEX(hfi_instance_lock);
 
 static struct workqueue_struct *hfi_updates_wq;
 #define HFI_UPDATE_DELAY_MS            100
-#define HFI_THERMNL_CAPS_PER_EVENT     16
+#define HFI_THERMNL_CAPS_PER_EVENT     64
 
 static void get_hfi_caps(struct hfi_instance *hfi_instance,
                         struct thermal_genl_cpu_caps *cpu_caps)