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gpu: nvgpu: Disable platform debug spew by default

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Disable the somewhat non-useful syncpoint debug spew in the nvgpu
debug spew. The GPU has it's own snapshot view of syncpoints so
visibility into other syncpoint data is often not very helpful.

However, there are plausibly times where this would be necessary.
For example debugging a sync issue between the GPU and some other
SoC engine. Therefore, the syncpoint debug spew can be enabled
again at runtime if necessary.

JIRA NVGPU-5541

Change-Id: I7028e2d6027e41835b2fed4f2bbb366c16b99967
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2349185
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Alex Waterman
2020-05-22 14:13:05 -05:00
parent 8778aa531d
commit 1f28443889
2 changed files with 6 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/gpu/nvgpu/os/linux/debug.c
View File

@@ -113,6 +113,7 @@ static int gk20a_gr_debug_show(struct seq_file *s, void *unused)
void gk20a_debug_dump(struct gk20a *g)
{
struct gk20a_platform *platform = gk20a_get_platform(dev_from_gk20a(g));
struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
struct nvgpu_debug_context o = {
.fn = gk20a_debug_write_printk,
.ctx = g,
@@ -122,7 +123,7 @@ void gk20a_debug_dump(struct gk20a *g)
if (g->ops.debug.show_dump)
g->ops.debug.show_dump(g, &o);
if (platform->dump_platform_dependencies)
if (platform->dump_platform_dependencies && l->enable_platform_dbg)
platform->dump_platform_dependencies(dev_from_gk20a(g));
}
@@ -361,8 +362,10 @@ void gk20a_debug_init(struct gk20a *g, const char *debugfs_symlink)
debugfs_create_u32("ch_wdt_init_limit_ms", S_IRUGO|S_IWUSR,
l->debugfs, &g->ch_wdt_init_limit_ms);
debugfs_create_bool("disable_syncpoints", S_IRUGO,
debugfs_create_bool("disable_syncpoints", S_IRUGO|S_IWUSR,
l->debugfs, &l->disable_syncpoints);
debugfs_create_bool("enable_platform_dbg", S_IRUGO|S_IWUSR,
l->debugfs, &l->enable_platform_dbg);
/* New debug logging API. */
debugfs_create_u64("log_mask", S_IRUGO|S_IWUSR,

1
drivers/gpu/nvgpu/os/linux/os_linux.h
View File

@@ -174,6 +174,7 @@ struct nvgpu_os_linux {
/** Debugfs knob for forcing syncpt support off in runtime. */
bool disable_syncpoints;
bool enable_platform_dbg;
};
static inline struct nvgpu_os_linux *nvgpu_os_linux_from_gk20a(struct gk20a *g)