From: David Ahern <david.ahern@xxxxxxxxxx>
Date: Thu, 19 Mar 2015 16:07:10 -0400
-static void mark_core_ids(struct mdesc_handle *hp, u64 mp, int core_id)
+static void __cpuinit find_back_node_value(struct mdesc_handle *hp, u64 node,
+ char *srch_val, void(*func)(struct mdesc_handle *, u64, int),
+ u64 val, int depth)
{
Function arguments on the second and subsequent line shall start
exactly at the first column after the openning parenthesis of
the function definition/declaration. You should use the appropriate
number of TAB then SPACE characters necessary to do so.
If you are only using TAB characters to indent this kind of thing,
it's probably not right.
+ /*since we have estimate of how deep, do recursion sanity check */
+ if (depth == 0)
+ return;
Please capitalize and properly punctuate this. Also put
a space after "/*".
+ mdesc_for_each_arc(arc, hp, node, MDESC_ARC_TYPE_BACK) {
+ u64 n = mdesc_arc_target(hp, arc);
+ const char *name = mdesc_node_name(hp, n);
- n_name = mdesc_node_name(hp, n);
- if (strcmp(n_name, "cpu"))
- continue;
+ if (!strcmp(srch_val, name))
+ (*func)(hp, n, val);
This needs one more TAB of indentation.
+ find_back_node_value(hp, n, srch_val, func, val, depth-1);
This as well. This doesn't look strange in your editor?
+static void __cpuinit __mark_core_id(struct mdesc_handle *hp, u64 node,
+ int core_id)
Please fix argument indentation.
+static void __cpuinit __mark_sock_id(struct mdesc_handle *hp, u64 node,
+ int sock_id)
Likewise.
+static void __cpuinit mark_core_ids(struct mdesc_handle *hp, u64 mp,
+ int core_id)
Likewise.
+static void __cpuinit mark_sock_ids(struct mdesc_handle *hp, u64 mp,
+ int sock_id)
Likewise.
+ /*
+ * identify unique cores by looking for cpus backpointed to by
+ * level 1 instruction caches
+ */
+
Please capitalize this sentence and format the comment:
/* Like
* this.
*/
+ /*
+ * identify unique sockets by looking for cpus backpointed to by
+ * level 3 caches
+ */
Likewise.
+ /* if machine description exposes sockets data use it.
+ * otherwise fallback to use L3 cache
+ */
Capitalize and properly punctuate.
+ if (sun4v_chip_type == SUN4V_CHIP_SPARC_M7) {
+ pr_warn("Machine description does not contain sockets node. Falling back\n");
+ pr_warn("to identifying CPUs to sockets using L3 cache which is known to\n");
+ pr_warn("be wrong for M7 processors (e.g, lscpu shows wrong number of sockets).\n");
+ pr_warn("Please update the firmware.\n");
+ }
If this isn't going to happen on FCS hardware, I wouldn't even bother
with this warning.
Thanks.
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