[Xen-devel] [PATCH v9 16/25] x86: refactor psr: CDP: implement get value flow.

[Yi Sun <yi.y.sun@xxxxxxxxxxxxxxx>]

This patch implements L3 CDP get value callback function.

With this patch, 'psr-cat-show' can work for L3 CDP.

Signed-off-by: Yi Sun <yi.y.sun@xxxxxxxxxxxxxxx>
---
v9:
    - modify the type of 'l3_cdp_get_val' to 'void'.
    - cos checking has been done in common function so remove related codes
      in CDP callback function.
      (suggested by Jan Beulich)
    - changes about 'uint64_t' to 'uint32_t'.
      (suggested by Jan Beulich)
v5:
    - remove type check in callback function.
      (suggested by Jan Beulich)
v4:
    - create this patch to make codes easier to understand.
      (suggested by Jan Beulich)
---
 xen/arch/x86/psr.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/xen/arch/x86/psr.c b/xen/arch/x86/psr.c
index ba5c7a4..0ce8a6b 100644
--- a/xen/arch/x86/psr.c
+++ b/xen/arch/x86/psr.c
@@ -521,9 +521,19 @@ static bool l3_cdp_get_feat_info(const struct feat_node 
*feat,
     return true;
 }
 
+static void l3_cdp_get_val(const struct feat_node *feat, unsigned int cos,
+                           enum cbm_type type, uint32_t *val)
+{
+    if ( type == PSR_CBM_TYPE_L3_DATA )
+        *val = get_cdp_data(feat, cos);
+    else
+        *val = get_cdp_code(feat, cos);
+}
+
 struct feat_ops l3_cdp_ops = {
     .get_cos_max = cat_get_cos_max,
     .get_feat_info = l3_cdp_get_feat_info,
+    .get_val = l3_cdp_get_val,
 };
 
 static void __init parse_psr_bool(char *s, char *value, char *feature,
-- 
1.9.1


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