diff mbox series

[v5,13/15] libxc: Add xc_set_cpufreq_cppc

Message ID 20230706185440.48333-14-jandryuk@gmail.com (mailing list archive)
State Superseded
Headers show
Series Intel Hardware P-States (HWP) support | expand

Commit Message

Jason Andryuk July 6, 2023, 6:54 p.m. UTC 
Add xc_set_cpufreq_cppc to allow calling xen_systctl_pm_op
SET_CPUFREQ_CPPC.

Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
---
v2:
Mark xc_set_hwp_para_t const

v4:
s/hwp/cppc/
Add Anthony's Ack

v5:
Remove const and copy back result
---
 tools/include/xenctrl.h |  4 ++++
 tools/libs/ctrl/xc_pm.c | 23 +++++++++++++++++++++++
 2 files changed, 27 insertions(+)
diff mbox series

Patch

diff --git a/tools/include/xenctrl.h b/tools/include/xenctrl.h
index 2092632296..52f42fb5b6 100644
--- a/tools/include/xenctrl.h
+++ b/tools/include/xenctrl.h
@@ -1930,11 +1930,15 @@  struct xc_get_cpufreq_para {
     int32_t turbo_enabled;
 };
 
+typedef struct xen_set_cppc_para xc_set_cppc_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_cppc(xc_interface *xch, int cpuid,
+                        xc_set_cppc_para_t *set_cppc);
 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 cea3eab22e..1f267147f6 100644
--- a/tools/libs/ctrl/xc_pm.c
+++ b/tools/libs/ctrl/xc_pm.c
@@ -329,6 +329,29 @@  int xc_set_cpufreq_para(xc_interface *xch, int cpuid,
     return xc_sysctl(xch, &sysctl);
 }
 
+int xc_set_cpufreq_cppc(xc_interface *xch, int cpuid,
+                        xc_set_cppc_para_t *set_cppc)
+{
+    DECLARE_SYSCTL;
+    int ret;
+
+    if ( !xch )
+    {
+        errno = EINVAL;
+        return -1;
+    }
+    sysctl.cmd = XEN_SYSCTL_pm_op;
+    sysctl.u.pm_op.cmd = SET_CPUFREQ_CPPC;
+    sysctl.u.pm_op.cpuid = cpuid;
+    sysctl.u.pm_op.u.set_cppc = *set_cppc;
+
+    ret = xc_sysctl(xch, &sysctl);
+
+    *set_cppc = sysctl.u.pm_op.u.set_cppc;
+
+    return ret;
+}
+
 int xc_get_cpufreq_avgfreq(xc_interface *xch, int cpuid, int *avg_freq)
 {
     int ret = 0;