diff options
Diffstat (limited to 'drivers/misc/sgi-gru/grufault.c')
| -rw-r--r-- | drivers/misc/sgi-gru/grufault.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c index cdd151b30dc..b894b7ed9c3 100644 --- a/drivers/misc/sgi-gru/grufault.c +++ b/drivers/misc/sgi-gru/grufault.c @@ -749,18 +749,30 @@ long gru_get_gseg_statistics(unsigned long arg) * Register the current task as the user of the GSEG slice. * Needed for TLB fault interrupt targeting. */ -int gru_set_task_slice(long address) +int gru_set_context_option(unsigned long arg) { struct gru_thread_state *gts; + struct gru_set_context_option_req req; + int ret = 0; - STAT(set_task_slice); - gru_dbg(grudev, "address 0x%lx\n", address); - gts = gru_alloc_locked_gts(address); + STAT(set_context_option); + if (copy_from_user(&req, (void __user *)arg, sizeof(req))) + return -EFAULT; + gru_dbg(grudev, "op %d, gseg 0x%lx, value1 0x%lx\n", req.op, req.gseg, req.val1); + + gts = gru_alloc_locked_gts(req.gseg); if (!gts) return -EINVAL; - gts->ts_tgid_owner = current->tgid; + switch (req.op) { + case sco_gseg_owner: + /* Register the current task as the GSEG owner */ + gts->ts_tgid_owner = current->tgid; + break; + default: + ret = -EINVAL; + } gru_unlock_gts(gts); - return 0; + return ret; } |