[Intel-gfx] [PATCH i-g-t v2] benchmarks/gem_wsim: Perturb static_vcs selection across clients

[Chris Wilson]

Use the client id to alternate the static_vcs balancer (-b context)
across clients with the round robin flag (-R) - otherwise all clients
end up on vcs0 and do not match the context balancing employed by
media-driver.

v2: Put it behind the -R flag.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
 benchmarks/gem_wsim.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/benchmarks/gem_wsim.c b/benchmarks/gem_wsim.c
index afb9644dd..48568ce40 100644
--- a/benchmarks/gem_wsim.c
+++ b/benchmarks/gem_wsim.c
@@ -939,7 +939,7 @@ alloc_step_batch(struct workload *wrk, struct w_step *w, unsigned int flags)
 static void
 prepare_workload(unsigned int id, struct workload *wrk, unsigned int flags)
 {
-	unsigned int ctx_vcs = 0;
+	unsigned int ctx_vcs;
 	int max_ctx = -1;
 	struct w_step *w;
 	int i;
@@ -948,8 +948,10 @@ prepare_workload(unsigned int id, struct workload *wrk, unsigned int flags)
 	wrk->prng = rand();
 	wrk->run = true;
 
+	ctx_vcs =  0;
 	if (flags & INITVCSRR)
-		wrk->vcs_rr = id & 1;
+		ctx_vcs = id & 1;
+	wrk->vcs_rr = ctx_vcs;
 
 	if (flags & GLOBAL_BALANCE) {
 		int ret = pthread_mutex_init(&wrk->mutex, NULL);
-- 
2.20.1