File N_03-nv30-locking-fixes.patch of Package Mesa.6057

From: Ilia Mirkin <imirkin@alum.mit.edu>
Date: Tue Jun 21 22:59:50 2016 -0400
Subject: [PATCH 3/5]nv30 locking fixes
Patch-mainline: N/A
References: bsc#997171
Signed-off-by: Max Staudt <mstaudt@suse.de>

Cherry-picked from 940b3a773f264f3f52574160f0d06c48f8e8aeb2
                at https://github.com/imirkin/mesa.git

Signed-off-by: Max Staudt <mstaudt@suse.de>
---
 src/gallium/drivers/nouveau/nv30/nv30_draw.c     | 20 ++++++++++++++++++--
 src/gallium/drivers/nouveau/nv30/nv30_fragprog.c |  4 ++++
 2 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/nouveau/nv30/nv30_draw.c b/src/gallium/drivers/nouveau/nv30/nv30_draw.c
index 7b0d074..1c71534 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_draw.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_draw.c
@@ -127,6 +127,8 @@ nv30_render_draw_elements(struct vbuf_render *render,
    struct nouveau_pushbuf *push = nv30->screen->base.pushbuf;
    unsigned i;

+   pipe_mutex_lock(nv30->screen->base.push_mutex);
+
    BEGIN_NV04(push, NV30_3D(VTXBUF(0)), r->vertex_info.num_attribs);
    for (i = 0; i < r->vertex_info.num_attribs; i++) {
       PUSH_RESRC(push, NV30_3D(VTXBUF(i)), BUFCTX_VTXTMP,
@@ -134,8 +136,10 @@ nv30_render_draw_elements(struct vbuf_render *render,
                        NOUVEAU_BO_LOW | NOUVEAU_BO_RD, 0, NV30_3D_VTXBUF_DMA1);
    }

-   if (!nv30_state_validate(nv30, ~0, false))
+   if (!nv30_state_validate(nv30, ~0, false)) {
+      pipe_mutex_unlock(nv30->screen->base.push_mutex);
       return;
+   }

    BEGIN_NV04(push, NV30_3D(VERTEX_BEGIN_END), 1);
    PUSH_DATA (push, r->prim);
@@ -160,6 +164,8 @@ nv30_render_draw_elements(struct vbuf_render *render,
    BEGIN_NV04(push, NV30_3D(VERTEX_BEGIN_END), 1);
    PUSH_DATA (push, NV30_3D_VERTEX_BEGIN_END_STOP);
    PUSH_RESET(push, BUFCTX_VTXTMP);
+
+   pipe_mutex_unlock(nv30->screen->base.push_mutex);
 }

 static void
@@ -172,6 +178,8 @@ nv30_render_draw_arrays(struct vbuf_render *render, unsigned start, uint nr)
    unsigned ps = fn + (pn ? 1 : 0);
    unsigned i;

+   pipe_mutex_lock(nv30->screen->base.push_mutex);
+
    BEGIN_NV04(push, NV30_3D(VTXBUF(0)), r->vertex_info.num_attribs);
    for (i = 0; i < r->vertex_info.num_attribs; i++) {
       PUSH_RESRC(push, NV30_3D(VTXBUF(i)), BUFCTX_VTXTMP,
@@ -179,8 +187,10 @@ nv30_render_draw_arrays(struct vbuf_render *render, unsigned start, uint nr)
                        NOUVEAU_BO_LOW | NOUVEAU_BO_RD, 0, NV30_3D_VTXBUF_DMA1);
    }

-   if (!nv30_state_validate(nv30, ~0, false))
+   if (!nv30_state_validate(nv30, ~0, false)) {
+      pipe_mutex_unlock(nv30->screen->base.push_mutex);
       return;
+   }

    BEGIN_NV04(push, NV30_3D(VERTEX_BEGIN_END), 1);
    PUSH_DATA (push, r->prim);
@@ -197,6 +207,8 @@ nv30_render_draw_arrays(struct vbuf_render *render, unsigned start, uint nr)
    BEGIN_NV04(push, NV30_3D(VERTEX_BEGIN_END), 1);
    PUSH_DATA (push, NV30_3D_VERTEX_BEGIN_END_STOP);
    PUSH_RESET(push, BUFCTX_VTXTMP);
+
+   pipe_mutex_unlock(nv30->screen->base.push_mutex);
 }

 static void
@@ -383,6 +395,8 @@ nv30_render_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)

    nv30_render_validate(nv30);

+   pipe_mutex_unlock(nv30->screen->base.push_mutex);
+
    if (nv30->draw_dirty & NV30_NEW_VIEWPORT)
       draw_set_viewport_states(draw, 0, 1, &nv30->viewport);
    if (nv30->draw_dirty & NV30_NEW_RASTERIZER)
@@ -448,6 +462,8 @@ nv30_render_vbo(struct pipe_context *pipe, const struct pipe_draw_info *info)
       if (transfer[i])
          pipe_buffer_unmap(pipe, transfer[i]);

+   pipe_mutex_lock(nv30->screen->base.push_mutex);
+
    nv30->draw_dirty = 0;
    nv30_state_release(nv30);
 }
diff --git a/src/gallium/drivers/nouveau/nv30/nv30_fragprog.c b/src/gallium/drivers/nouveau/nv30/nv30_fragprog.c
index 6de61bc..fd21f99 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_fragprog.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_fragprog.c
@@ -38,6 +38,8 @@ nv30_fragprog_upload(struct nv30_context *nv30)
    struct nv30_fragprog *fp = nv30->fragprog.program;
    struct pipe_context *pipe = &nv30->base.pipe;

+   pipe_mutex_unlock(nv->screen->push_mutex);
+
    if (unlikely(!fp->buffer))
       fp->buffer = pipe_buffer_create(pipe->screen, 0, 0, fp->insn_len * 4);

@@ -60,6 +62,8 @@ nv30_fragprog_upload(struct nv30_context *nv30)

    if (nv04_resource(fp->buffer)->domain != NOUVEAU_BO_VRAM)
       nouveau_buffer_migrate(nv, nv04_resource(fp->buffer), NOUVEAU_BO_VRAM);
+
+   pipe_mutex_lock(nv->screen->push_mutex);
 }

 void