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[IA64] make pfm_get_task work with virtual pids 

This pid comes from user space, so treat it accordingly.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Pavel Emelyanov 2008-02-04 23:43:03 -08:00 committed by Tony Luck
parent 620de2f5dc
commit e1b0d4ba46
1 changed files with 2 additions and 2 deletions
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4
arch/ia64/kernel/perfmon.c
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@ -2654,11 +2654,11 @@ pfm_get_task(pfm_context_t *ctx, pid_t pid, struct task_struct **task)
/* XXX: need to add more checks here */ /* XXX: need to add more checks here */
if (pid < 2) return -EPERM; if (pid < 2) return -EPERM;
if (pid != current->pid) { if (pid != task_pid_vnr(current)) {
read_lock(&tasklist_lock); read_lock(&tasklist_lock);
p = find_task_by_pid(pid); p = find_task_by_vpid(pid);
/* make sure task cannot go away while we operate on it */ /* make sure task cannot go away while we operate on it */
if (p) get_task_struct(p); if (p) get_task_struct(p);