powercap/intel_rapl: Simplify rapl_find_package()

Simplify how the code to discover a package is called.  Rename
find_package_by_id() to rapl_find_package_domain()

Syntax only, no functional or semantic change.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: linux-pm@vger.kernel.org
Link: https://lkml.kernel.org/r/ae3d1903407fd6e3684234b674f4f0e62c2ab54c.1557769318.git.len.brown@intel.com

diff --git a/drivers/powercap/intel_rapl.c b/drivers/powercap/intel_rapl.c
index 4347f15..3c3c0c2 100644 (file)
--- a/drivers/powercap/intel_rapl.c
+++ b/drivers/powercap/intel_rapl.c
@@ -264,8 +264,9 @@ static struct powercap_control_type *control_type; /* PowerCap Controller */
 static struct rapl_domain *platform_rapl_domain; /* Platform (PSys) domain */
 
 /* caller to ensure CPU hotplug lock is held */
-static struct rapl_package *find_package_by_id(int id)
+static struct rapl_package *rapl_find_package_domain(int cpu)
 {
+       int id = topology_physical_package_id(cpu);
        struct rapl_package *rp;
 
        list_for_each_entry(rp, &rapl_packages, plist) {
@@ -1300,7 +1301,7 @@ static int __init rapl_register_psys(void)
        rd->rpl[0].name = pl1_name;
        rd->rpl[1].prim_id = PL2_ENABLE;
        rd->rpl[1].name = pl2_name;
-       rd->rp = find_package_by_id(0);
+       rd->rp = rapl_find_package_domain(0);
 
        power_zone = powercap_register_zone(&rd->power_zone, control_type,
                                            "psys", NULL,
@@ -1456,8 +1457,9 @@ static void rapl_remove_package(struct rapl_package *rp)
 }
 
 /* called from CPU hotplug notifier, hotplug lock held */
-static struct rapl_package *rapl_add_package(int cpu, int pkgid)
+static struct rapl_package *rapl_add_package(int cpu)
 {
+       int id = topology_physical_package_id(cpu);
        struct rapl_package *rp;
        int ret;
 
@@ -1466,7 +1468,7 @@ static struct rapl_package *rapl_add_package(int cpu, int pkgid)
                return ERR_PTR(-ENOMEM);
 
        /* add the new package to the list */
-       rp->id = pkgid;
+       rp->id = id;
        rp->lead_cpu = cpu;
 
        /* check if the package contains valid domains */
@@ -1497,12 +1499,11 @@ err_free_package:
  */
 static int rapl_cpu_online(unsigned int cpu)
 {
-       int pkgid = topology_physical_package_id(cpu);
        struct rapl_package *rp;
 
-       rp = find_package_by_id(pkgid);
+       rp = rapl_find_package_domain(cpu);
        if (!rp) {
-               rp = rapl_add_package(cpu, pkgid);
+               rp = rapl_add_package(cpu);
                if (IS_ERR(rp))
                        return PTR_ERR(rp);
        }
@@ -1512,11 +1513,10 @@ static int rapl_cpu_online(unsigned int cpu)
 
 static int rapl_cpu_down_prep(unsigned int cpu)
 {
-       int pkgid = topology_physical_package_id(cpu);
        struct rapl_package *rp;
        int lead_cpu;
 
-       rp = find_package_by_id(pkgid);
+       rp = rapl_find_package_domain(cpu);
        if (!rp)
                return 0;