This is a note to let you know that I've just added the patch titled
drm/amd/display: use pre-allocated temp structure for bounding box
to the 6.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-display-use-pre-allocated-temp-structure-for.patch
and it can be found in the queue-6.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b39aa49a0a6d14a06ff6e91d18a8cc4792499d0e
Author: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Tue Jun 4 11:46:04 2024 -0400
drm/amd/display: use pre-allocated temp structure for bounding box
[ Upstream commit afe9555e79fcd0d758e3796ad00fd6292d99361b ]
This mirrors what the driver does for older DCN generations.
Should fix:
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 449, name: kworker/u64:8
preempt_count: 2, expected: 0
RCU nest depth: 0, expected: 0
Preemption disabled at:
ffffffffc0ce1580>] dc_fpu_begin+0x30/0xd0 [amdgpu]
CPU: 5 PID: 449 Comm: kworker/u64:8 Tainted: G W 6.8.0+ #35
Hardware name: System manufacturer System Product Name/ROG STRIX X570-E GAMING WIFI II, BIOS 4204 02/24/2022
Workqueue: events_unbound async_run_entry_fn
v2: drop extra memcpy
Fixes: 88c61827cedc ("drm/amd/display: dynamically allocate dml2_configuration_options structures")
Reviewed-by: Harry Wentland <harry.wentland@xxxxxxx>
Tested-by: George Zhang <George.zhang@xxxxxxx> (v1)
Suggested-by: Hamza Mahfooz <hamza.mahfooz@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: George Zhang <george.zhang@xxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: harry.wentland@xxxxxxx
Cc: sunpeng.li@xxxxxxx
Cc: Rodrigo.Siqueira@xxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 3c33c3bcbe2cb..4362fca1f15ad 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -1392,6 +1392,7 @@ struct dc {
} scratch;
struct dml2_configuration_options dml2_options;
+ struct dml2_configuration_options dml2_tmp;
enum dc_acpi_cm_power_state power_state;
};
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c
index 957002967d691..d84c8e0e5c2f0 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c
@@ -2006,11 +2006,9 @@ void dcn32_calculate_wm_and_dlg(struct dc *dc, struct dc_state *context,
static void dcn32_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_params)
{
- struct dml2_configuration_options *dml2_opt;
+ struct dml2_configuration_options *dml2_opt = &dc->dml2_tmp;
- dml2_opt = kmemdup(&dc->dml2_options, sizeof(dc->dml2_options), GFP_KERNEL);
- if (!dml2_opt)
- return;
+ memcpy(dml2_opt, &dc->dml2_options, sizeof(dc->dml2_options));
DC_FP_START();
@@ -2025,8 +2023,6 @@ static void dcn32_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw
dml2_reinit(dc, dml2_opt, &dc->current_state->bw_ctx.dml2_dc_power_source);
DC_FP_END();
-
- kfree(dml2_opt);
}
static struct resource_funcs dcn32_res_pool_funcs = {
diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn321/dcn321_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn321/dcn321_resource.c
index 07ca6f58447d6..9a3cc0514a36e 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn321/dcn321_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn321/dcn321_resource.c
@@ -1581,11 +1581,9 @@ static struct dc_cap_funcs cap_funcs = {
static void dcn321_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_params)
{
- struct dml2_configuration_options *dml2_opt;
+ struct dml2_configuration_options *dml2_opt = &dc->dml2_tmp;
- dml2_opt = kmemdup(&dc->dml2_options, sizeof(dc->dml2_options), GFP_KERNEL);
- if (!dml2_opt)
- return;
+ memcpy(dml2_opt, &dc->dml2_options, sizeof(dc->dml2_options));
DC_FP_START();
@@ -1600,8 +1598,6 @@ static void dcn321_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *b
dml2_reinit(dc, dml2_opt, &dc->current_state->bw_ctx.dml2_dc_power_source);
DC_FP_END();
-
- kfree(dml2_opt);
}
static struct resource_funcs dcn321_res_pool_funcs = {
