[RFC,11/12] libxc: Add xc_set_cpufreq_hwp

Commit Message

Jason Andryuk March 8, 2021, 9:02 p.m. UTC

Add xc_set_cpufreq_hwp to allow calling xen_systctl_pm_op
SET_CPUFREQ_HWP.

Signed-off-by: Jason Andryuk <[e-mail]>

---
Am I allowed to do set_hwp = *set_hwp struct assignment?
---
 tools/include/xenctrl.h |  4 ++++
 tools/libs/ctrl/xc_pm.c | 18 ++++++++++++++++++
 2 files changed, 22 insertions(+)

Patch

diff --git a/tools/include/xenctrl.h b/tools/include/xenctrl.h
index 3b0ca62fc7..dc8e1bb23a 100644
--- a/tools/include/xenctrl.h
+++ b/tools/include/xenctrl.h
@@ -1994,11 +1994,15 @@  struct xc_get_cpufreq_para {
     int32_t turbo_enabled;
 };
 
+typedef struct xen_set_hwp_para xc_set_hwp_para_t;
+
 int xc_get_cpufreq_para(xc_interface *xch, int cpuid,
                         struct xc_get_cpufreq_para *user_para);
 int xc_set_cpufreq_gov(xc_interface *xch, int cpuid, char *govname);
 int xc_set_cpufreq_para(xc_interface *xch, int cpuid,
                         int ctrl_type, int ctrl_value);
+int xc_set_cpufreq_hwp(xc_interface *xch, int cpuid,
+                       xc_set_hwp_para_t *set_hwp);
 int xc_get_cpufreq_avgfreq(xc_interface *xch, int cpuid, int *avg_freq);
 
 int xc_set_sched_opt_smt(xc_interface *xch, uint32_t value);
diff --git a/tools/libs/ctrl/xc_pm.c b/tools/libs/ctrl/xc_pm.c
index 76d7eb7f26..407a24d2aa 100644
--- a/tools/libs/ctrl/xc_pm.c
+++ b/tools/libs/ctrl/xc_pm.c
@@ -330,6 +330,24 @@  int xc_set_cpufreq_para(xc_interface *xch, int cpuid,
     return xc_sysctl(xch, &sysctl);
 }
 
+int xc_set_cpufreq_hwp(xc_interface *xch, int cpuid,
+                       xc_set_hwp_para_t *set_hwp)
+{
+    DECLARE_SYSCTL;
+
+    if ( !xch )
+    {
+        errno = EINVAL;
+        return -1;
+    }
+    sysctl.cmd = XEN_SYSCTL_pm_op;
+    sysctl.u.pm_op.cmd = SET_CPUFREQ_HWP;
+    sysctl.u.pm_op.cpuid = cpuid;
+    sysctl.u.pm_op.u.set_hwp = *set_hwp;
+
+    return xc_sysctl(xch, &sysctl);
+}
+
 int xc_get_cpufreq_avgfreq(xc_interface *xch, int cpuid, int *avg_freq)
 {
     int ret = 0;