forked from luck/tmp_suning_uos_patched
gru: check for correct GRU chiplet assignment
Simplify the code that checks for correct assignment of GRU contexts to users. Signed-off-by: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
54465dcc03
commit
4131479088
@ -53,12 +53,16 @@ struct device *grudev = &gru_device;
|
||||
*/
|
||||
int gru_cpu_fault_map_id(void)
|
||||
{
|
||||
#ifdef CONFIG_IA64
|
||||
return uv_blade_processor_id() % GRU_NUM_TFM;
|
||||
#else
|
||||
int cpu = smp_processor_id();
|
||||
int id, core;
|
||||
|
||||
core = uv_cpu_core_number(cpu);
|
||||
id = core + UV_MAX_INT_CORES * uv_cpu_socket_number(cpu);
|
||||
return id;
|
||||
#endif
|
||||
}
|
||||
|
||||
/*--------- ASID Management -------------------------------------------
|
||||
@ -698,16 +702,35 @@ static int gru_retarget_intr(struct gru_thread_state *gts)
|
||||
return gru_update_cch(gts);
|
||||
}
|
||||
|
||||
/*
|
||||
* Check if a GRU context is allowed to use a specific chiplet. By default
|
||||
* a context is assigned to any blade-local chiplet. However, users can
|
||||
* override this.
|
||||
* Returns 1 if assignment allowed, 0 otherwise
|
||||
*/
|
||||
static int gru_check_chiplet_assignment(struct gru_state *gru,
|
||||
struct gru_thread_state *gts)
|
||||
{
|
||||
int blade_id;
|
||||
int chiplet_id;
|
||||
|
||||
blade_id = gts->ts_user_blade_id;
|
||||
if (blade_id < 0)
|
||||
blade_id = uv_numa_blade_id();
|
||||
|
||||
chiplet_id = gts->ts_user_chiplet_id;
|
||||
return gru->gs_blade_id == blade_id &&
|
||||
(chiplet_id < 0 || chiplet_id == gru->gs_chiplet_id);
|
||||
}
|
||||
|
||||
/*
|
||||
* Unload the gru context if it is not assigned to the correct blade or
|
||||
* chiplet. Misassignment can occur if the process migrates to a different
|
||||
* blade or if the user changes the selected blade/chiplet.
|
||||
* Return 0 if context correct placed, otherwise 1
|
||||
*/
|
||||
void gru_check_context_placement(struct gru_thread_state *gts)
|
||||
{
|
||||
struct gru_state *gru;
|
||||
int blade_id, chiplet_id;
|
||||
|
||||
/*
|
||||
* If the current task is the context owner, verify that the
|
||||
@ -718,13 +741,7 @@ void gru_check_context_placement(struct gru_thread_state *gts)
|
||||
if (!gru || gts->ts_tgid_owner != current->tgid)
|
||||
return;
|
||||
|
||||
blade_id = gts->ts_user_blade_id;
|
||||
if (blade_id < 0)
|
||||
blade_id = uv_numa_blade_id();
|
||||
|
||||
chiplet_id = gts->ts_user_chiplet_id;
|
||||
if (gru->gs_blade_id != blade_id ||
|
||||
(chiplet_id >= 0 && chiplet_id != gru->gs_chiplet_id)) {
|
||||
if (!gru_check_chiplet_assignment(gru, gts)) {
|
||||
STAT(check_context_unload);
|
||||
gru_unload_context(gts, 1);
|
||||
} else if (gru_retarget_intr(gts)) {
|
||||
@ -768,9 +785,9 @@ void gru_steal_context(struct gru_thread_state *gts)
|
||||
struct gru_state *gru, *gru0;
|
||||
struct gru_thread_state *ngts = NULL;
|
||||
int ctxnum, ctxnum0, flag = 0, cbr, dsr;
|
||||
int blade_id = gts->ts_user_blade_id;
|
||||
int chiplet_id = gts->ts_user_chiplet_id;
|
||||
int blade_id;
|
||||
|
||||
blade_id = gts->ts_user_blade_id;
|
||||
if (blade_id < 0)
|
||||
blade_id = uv_numa_blade_id();
|
||||
cbr = gts->ts_cbr_au_count;
|
||||
@ -788,7 +805,7 @@ void gru_steal_context(struct gru_thread_state *gts)
|
||||
ctxnum0 = ctxnum;
|
||||
gru0 = gru;
|
||||
while (1) {
|
||||
if (chiplet_id < 0 || chiplet_id == gru->gs_chiplet_id) {
|
||||
if (gru_check_chiplet_assignment(gru, gts)) {
|
||||
if (check_gru_resources(gru, cbr, dsr, GRU_NUM_CCH))
|
||||
break;
|
||||
spin_lock(&gru->gs_lock);
|
||||
@ -853,7 +870,6 @@ struct gru_state *gru_assign_gru_context(struct gru_thread_state *gts)
|
||||
struct gru_state *gru, *grux;
|
||||
int i, max_active_contexts;
|
||||
int blade_id = gts->ts_user_blade_id;
|
||||
int chiplet_id = gts->ts_user_chiplet_id;
|
||||
|
||||
if (blade_id < 0)
|
||||
blade_id = uv_numa_blade_id();
|
||||
@ -861,7 +877,7 @@ struct gru_state *gru_assign_gru_context(struct gru_thread_state *gts)
|
||||
gru = NULL;
|
||||
max_active_contexts = GRU_NUM_CCH;
|
||||
for_each_gru_on_blade(grux, blade_id, i) {
|
||||
if (chiplet_id >= 0 && chiplet_id != grux->gs_chiplet_id)
|
||||
if (!gru_check_chiplet_assignment(grux, gts))
|
||||
continue;
|
||||
if (check_gru_resources(grux, gts->ts_cbr_au_count,
|
||||
gts->ts_dsr_au_count,
|
||||
|
Loading…
Reference in New Issue
Block a user