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| author | Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2021-08-12 18:52:20 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-08-13 22:04:26 +1000 |
| commit | 0eacd06bb8adea8dd9edb0a30144166d9f227e64 (patch) | |
| tree | ed0d95c9ef4124bd3e416e5cea09d503480d5390 /arch/powerpc/mm/numa.c | |
| parent | 7e35ef662ca05c42dbc2f401bb76d9219dd7fd02 (diff) | |
| download | lwn-0eacd06bb8adea8dd9edb0a30144166d9f227e64.tar.gz lwn-0eacd06bb8adea8dd9edb0a30144166d9f227e64.zip | |
powerpc/pseries: Rename TYPE1_AFFINITY to FORM1_AFFINITY
Also make related code cleanup that will allow adding FORM2_AFFINITY in
later patches. No functional change in this patch.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210812132223.225214-3-aneesh.kumar@linux.ibm.com
Diffstat (limited to 'arch/powerpc/mm/numa.c')
| -rw-r--r-- | arch/powerpc/mm/numa.c | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 79132744b728..0bad11b3e929 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -53,7 +53,10 @@ EXPORT_SYMBOL(node_data); static int primary_domain_index; static int n_mem_addr_cells, n_mem_size_cells; -static int form1_affinity; + +#define FORM0_AFFINITY 0 +#define FORM1_AFFINITY 1 +static int affinity_form; #define MAX_DISTANCE_REF_POINTS 4 static int distance_ref_points_depth; @@ -190,7 +193,7 @@ int __node_distance(int a, int b) int i; int distance = LOCAL_DISTANCE; - if (!form1_affinity) + if (affinity_form == FORM0_AFFINITY) return ((a == b) ? LOCAL_DISTANCE : REMOTE_DISTANCE); for (i = 0; i < distance_ref_points_depth; i++) { @@ -210,7 +213,7 @@ static void initialize_distance_lookup_table(int nid, { int i; - if (!form1_affinity) + if (affinity_form != FORM1_AFFINITY) return; for (i = 0; i < distance_ref_points_depth; i++) { @@ -289,6 +292,17 @@ static int __init find_primary_domain_index(void) int index; struct device_node *root; + /* + * Check for which form of affinity. + */ + if (firmware_has_feature(FW_FEATURE_OPAL)) { + affinity_form = FORM1_AFFINITY; + } else if (firmware_has_feature(FW_FEATURE_FORM1_AFFINITY)) { + dbg("Using form 1 affinity\n"); + affinity_form = FORM1_AFFINITY; + } else + affinity_form = FORM0_AFFINITY; + if (firmware_has_feature(FW_FEATURE_OPAL)) root = of_find_node_by_path("/ibm,opal"); else @@ -318,23 +332,16 @@ static int __init find_primary_domain_index(void) } distance_ref_points_depth /= sizeof(int); - - if (firmware_has_feature(FW_FEATURE_OPAL) || - firmware_has_feature(FW_FEATURE_TYPE1_AFFINITY)) { - dbg("Using form 1 affinity\n"); - form1_affinity = 1; - } - - if (form1_affinity) { - index = of_read_number(distance_ref_points, 1); - } else { + if (affinity_form == FORM0_AFFINITY) { if (distance_ref_points_depth < 2) { printk(KERN_WARNING "NUMA: " - "short ibm,associativity-reference-points\n"); + "short ibm,associativity-reference-points\n"); goto err; } index = of_read_number(&distance_ref_points[1], 1); + } else { + index = of_read_number(distance_ref_points, 1); } /* |