On Mon, Oct 01, 2018 at 06:01:38PM +0530, Sharat Masetty wrote: > This patch changes to kzalloc and avoids setting individual submit > struct fields to zero manually. I don't think this one is worth it. There are so many members in submit and so few that get reset to 0 - I don't think the extra cycles are worth it in this fast path. > Signed-off-by: Sharat Masetty <smasetty@xxxxxxxxxxxxxx> > --- > drivers/gpu/drm/msm/msm_gem_submit.c | 7 +------ > 1 file changed, 1 insertion(+), 6 deletions(-) > > diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c > index a7c8cbc..7931c2a 100644 > --- a/drivers/gpu/drm/msm/msm_gem_submit.c > +++ b/drivers/gpu/drm/msm/msm_gem_submit.c > @@ -41,24 +41,19 @@ static struct msm_gem_submit *submit_create(struct drm_device *dev, > if (sz > SIZE_MAX) > return NULL; > > - submit = kmalloc(sz, GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY); > + submit = kzalloc(sz, GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY); > if (!submit) > return NULL; > > submit->dev = dev; > submit->gpu = gpu; > submit->ctx = ctx; > - submit->hw_fence = NULL; > submit->out_fence_id = -1; > submit->pid = get_pid(task_pid(current)); > submit->cmd = (void *)&submit->bos[nr_bos]; > submit->queue = queue; > submit->ring = gpu->rb[queue->prio]; > > - /* initially, until copy_from_user() and bo lookup succeeds: */ > - submit->nr_bos = 0; > - submit->nr_cmds = 0; > - > INIT_LIST_HEAD(&submit->node); > INIT_LIST_HEAD(&submit->bo_list); > ww_acquire_init(&submit->ticket, &reservation_ww_class); > -- > 1.9.1 > -- The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
