Commit 090de0b7 authored by's avatar Committed by Tony Luck
Browse files

[IA64] fix bug in sn/ia64 for sparse CPU numbering

The kernel's use of the for_each_*cpu(i) macros has allowed for sparse CPU
numbering.  When I hacked the kernel to test sparse cpu_present_map[] and
cpu_possible_map[] cpumasks, I discovered one remaining spot, in
sn_hwperf_ioctl() during sn initialization, that needs to be fixed.
Signed-off-by: default avatarJohn Hawkes <>
Signed-off-by: default avatarDean Roe <>
Signed-off-by: default avatarTony Luck <>
parent 9ad4f924
......@@ -743,13 +743,14 @@ sn_hwperf_ioctl(struct inode *in, struct file *fp, u32 op, u64 arg)
if ((r = sn_hwperf_enum_objects(&nobj, &objs)) == 0) {
memset(p, 0,;
for (i = 0; i < nobj; i++) {
int cpuobj_index = 0;
if (!SN_HWPERF_IS_NODE(objs + i))
node = sn_hwperf_obj_to_cnode(objs + i);
for_each_online_cpu(j) {
if (node != cpu_to_node(j))
cpuobj = (struct sn_hwperf_object_info *) p + j;
cpuobj = (struct sn_hwperf_object_info *) p + cpuobj_index++;
slice = 'a' + cpuid_to_slice(j);
cdata = cpu_data(j);
cpuobj->id = j;
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