video: tegra: host: map command buffer if tracing is enabled

Map the command buffer only if tracing is enabled.
Buffer mapping is required only for command tracing
otherwise there is no need to map.

Change-Id: If433e1dec78322f415b2f5370d1a6e7b2346c4e9
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/427020
(cherry picked from commit e42b2925ca54e8a27a833d1008318a095a18f1e6)
Reviewed-on: http://git-master/r/427655
GVS: Gerrit_Virtual_Submit
Reviewed-by: Sachin Nikam <snikam@nvidia.com>

diff --git a/drivers/video/tegra/host/host1x/host1x_channel.c b/drivers/video/tegra/host/host1x/host1x_channel.c
index c182c1d7936032e43919c22138263345a70727c4..46f319ea83f67d4e1c857a727fd4a9a5a6a7b64e 100644 (file)
--- a/drivers/video/tegra/host/host1x/host1x_channel.c
+++ b/drivers/video/tegra/host/host1x/host1x_channel.c
@@ -31,6 +31,7 @@
 #include "nvhost_hwctx.h"
 #include "nvhost_intr.h"
 #include "class_ids.h"
+#include "debug.h"
 
 static void sync_waitbases(struct nvhost_channel *ch, u32 syncpt_val)
 {
@@ -247,7 +248,7 @@ static void submit_gathers(struct nvhost_job *job)
 {
        u32 class_id = 0;
        int i;
-       void *cpuva;
+       void *cpuva = NULL;
 
        /* push user gathers */
        for (i = 0 ; i < job->num_gathers; i++) {
@@ -276,7 +277,8 @@ static void submit_gathers(struct nvhost_job *job)
                        op1 = nvhost_opcode_gather(g->words);
                op2 = job->gathers[i].mem_base + g->offset;
 
-               cpuva = dma_buf_vmap(g->buf);
+               if (nvhost_debug_trace_cmdbuf)
+                       cpuva = dma_buf_vmap(g->buf);
                nvhost_cdma_push_gather(&job->ch->cdma,
                                cpuva,
                                job->gathers[i].mem_base,