diff options
| author | hawkes@sgi.com | 2005-11-18 20:30:34 +0100 |
|---|---|---|
| committer | Tony Luck | 2005-11-21 23:15:42 +0100 |
| commit | 090de0b77ceed1f1d05883fa744760f0c65d9c31 (patch) | |
| tree | 531288885c524904bf5baa4e7dadc4048fee3fd9 /arch/ia64 | |
| parent | [IA64] Prevent sn2 ptc code from executing on all ia64 subarches (diff) | |
| download | kernel-qcow2-linux-090de0b77ceed1f1d05883fa744760f0c65d9c31.tar.gz kernel-qcow2-linux-090de0b77ceed1f1d05883fa744760f0c65d9c31.tar.xz kernel-qcow2-linux-090de0b77ceed1f1d05883fa744760f0c65d9c31.zip | |
[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: John Hawkes <hawkes@sgi.com>
Signed-off-by: Dean Roe <roe@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/sn/kernel/sn2/sn_hwperf.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/ia64/sn/kernel/sn2/sn_hwperf.c b/arch/ia64/sn/kernel/sn2/sn_hwperf.c index 6c6fbca3229c..19b54fbcd7ea 100644 --- a/arch/ia64/sn/kernel/sn2/sn_hwperf.c +++ b/arch/ia64/sn/kernel/sn2/sn_hwperf.c @@ -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, a.sz); for (i = 0; i < nobj; i++) { + int cpuobj_index = 0; if (!SN_HWPERF_IS_NODE(objs + i)) continue; node = sn_hwperf_obj_to_cnode(objs + i); for_each_online_cpu(j) { if (node != cpu_to_node(j)) continue; - 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; |