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Date: Tue, 28 Sep 2021 14:39:35 +0800
From: kernel test robot <lkp@...el.com>
To: Kees Cook <keescook@...omium.org>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>,
Linux Memory Management List <linux-mm@...ck.org>
Subject: drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn20/display_rq_dlg_calc_20.c:1531:6:
warning: stack frame size (1324) exceeds limit (1024) in function
'dml20_rq_dlg_get_dlg_reg'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 92477dd1faa650e50bd3bb35a6c0b8d09198cc35
commit: c637693b20da8706b7f48d96882c9c80ae935151 ubsan: remove UBSAN_MISC in favor of individual options
date: 10 months ago
config: i386-randconfig-a015-20210927 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dc6e8dfdfe7efecfda318d43a06fae18b40eb498)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c637693b20da8706b7f48d96882c9c80ae935151
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout c637693b20da8706b7f48d96882c9c80ae935151
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn20/display_rq_dlg_calc_20.c:1531:6: warning: stack frame size (1324) exceeds limit (1024) in function 'dml20_rq_dlg_get_dlg_reg' [-Wframe-larger-than]
void dml20_rq_dlg_get_dlg_reg(struct display_mode_lib *mode_lib,
^
1 warning generated.
--
>> drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn20/display_rq_dlg_calc_20v2.c:1532:6: warning: stack frame size (1324) exceeds limit (1024) in function 'dml20v2_rq_dlg_get_dlg_reg' [-Wframe-larger-than]
void dml20v2_rq_dlg_get_dlg_reg(struct display_mode_lib *mode_lib,
^
1 warning generated.
--
drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn21/display_rq_dlg_calc_21.c:1696:6: warning: no previous prototype for function 'dml_rq_dlg_get_arb_params' [-Wmissing-prototypes]
void dml_rq_dlg_get_arb_params(struct display_mode_lib *mode_lib, display_arb_params_st *arb_param)
^
drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn21/display_rq_dlg_calc_21.c:1696:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void dml_rq_dlg_get_arb_params(struct display_mode_lib *mode_lib, display_arb_params_st *arb_param)
^
static
>> drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn21/display_rq_dlg_calc_21.c:1639:6: warning: stack frame size (1436) exceeds limit (1024) in function 'dml21_rq_dlg_get_dlg_reg' [-Wframe-larger-than]
void dml21_rq_dlg_get_dlg_reg(
^
2 warnings generated.
--
>> drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn30/display_rq_dlg_calc_30.c:1813:6: warning: stack frame size (1500) exceeds limit (1024) in function 'dml30_rq_dlg_get_dlg_reg' [-Wframe-larger-than]
void dml30_rq_dlg_get_dlg_reg(struct display_mode_lib *mode_lib,
^
1 warning generated.
vim +/dml20_rq_dlg_get_dlg_reg +1531 drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn20/display_rq_dlg_calc_20.c
728c06986a4f38 Harry Wentland 2019-02-22 1530
728c06986a4f38 Harry Wentland 2019-02-22 @1531 void dml20_rq_dlg_get_dlg_reg(struct display_mode_lib *mode_lib,
728c06986a4f38 Harry Wentland 2019-02-22 1532 display_dlg_regs_st *dlg_regs,
728c06986a4f38 Harry Wentland 2019-02-22 1533 display_ttu_regs_st *ttu_regs,
728c06986a4f38 Harry Wentland 2019-02-22 1534 display_e2e_pipe_params_st *e2e_pipe_param,
728c06986a4f38 Harry Wentland 2019-02-22 1535 const unsigned int num_pipes,
728c06986a4f38 Harry Wentland 2019-02-22 1536 const unsigned int pipe_idx,
728c06986a4f38 Harry Wentland 2019-02-22 1537 const bool cstate_en,
f82c916c41974c Charlene Liu 2019-06-03 1538 const bool pstate_en,
f82c916c41974c Charlene Liu 2019-06-03 1539 const bool vm_en,
f82c916c41974c Charlene Liu 2019-06-03 1540 const bool ignore_viewport_pos,
f82c916c41974c Charlene Liu 2019-06-03 1541 const bool immediate_flip_support)
728c06986a4f38 Harry Wentland 2019-02-22 1542 {
728c06986a4f38 Harry Wentland 2019-02-22 1543 display_rq_params_st rq_param = {0};
728c06986a4f38 Harry Wentland 2019-02-22 1544 display_dlg_sys_params_st dlg_sys_param = {0};
728c06986a4f38 Harry Wentland 2019-02-22 1545
728c06986a4f38 Harry Wentland 2019-02-22 1546 // Get watermark and Tex.
728c06986a4f38 Harry Wentland 2019-02-22 1547 dlg_sys_param.t_urg_wm_us = get_wm_urgent(mode_lib, e2e_pipe_param, num_pipes);
728c06986a4f38 Harry Wentland 2019-02-22 1548 dlg_sys_param.deepsleep_dcfclk_mhz = get_clk_dcf_deepsleep(mode_lib,
728c06986a4f38 Harry Wentland 2019-02-22 1549 e2e_pipe_param,
728c06986a4f38 Harry Wentland 2019-02-22 1550 num_pipes);
728c06986a4f38 Harry Wentland 2019-02-22 1551 dlg_sys_param.t_extra_us = get_urgent_extra_latency(mode_lib, e2e_pipe_param, num_pipes);
728c06986a4f38 Harry Wentland 2019-02-22 1552 dlg_sys_param.mem_trip_us = get_wm_memory_trip(mode_lib, e2e_pipe_param, num_pipes);
728c06986a4f38 Harry Wentland 2019-02-22 1553 dlg_sys_param.t_mclk_wm_us = get_wm_dram_clock_change(mode_lib, e2e_pipe_param, num_pipes);
728c06986a4f38 Harry Wentland 2019-02-22 1554 dlg_sys_param.t_sr_wm_us = get_wm_stutter_enter_exit(mode_lib, e2e_pipe_param, num_pipes);
728c06986a4f38 Harry Wentland 2019-02-22 1555 dlg_sys_param.total_flip_bw = get_total_immediate_flip_bw(mode_lib,
728c06986a4f38 Harry Wentland 2019-02-22 1556 e2e_pipe_param,
728c06986a4f38 Harry Wentland 2019-02-22 1557 num_pipes);
728c06986a4f38 Harry Wentland 2019-02-22 1558 dlg_sys_param.total_flip_bytes = get_total_immediate_flip_bytes(mode_lib,
728c06986a4f38 Harry Wentland 2019-02-22 1559 e2e_pipe_param,
728c06986a4f38 Harry Wentland 2019-02-22 1560 num_pipes);
728c06986a4f38 Harry Wentland 2019-02-22 1561 dlg_sys_param.t_srx_delay_us = mode_lib->ip.dcfclk_cstate_latency
728c06986a4f38 Harry Wentland 2019-02-22 1562 / dlg_sys_param.deepsleep_dcfclk_mhz; // TODO: Deprecated
728c06986a4f38 Harry Wentland 2019-02-22 1563
728c06986a4f38 Harry Wentland 2019-02-22 1564 print__dlg_sys_params_st(mode_lib, dlg_sys_param);
728c06986a4f38 Harry Wentland 2019-02-22 1565
728c06986a4f38 Harry Wentland 2019-02-22 1566 // system parameter calculation done
728c06986a4f38 Harry Wentland 2019-02-22 1567
728c06986a4f38 Harry Wentland 2019-02-22 1568 dml_print("DML_DLG: Calculation for pipe[%d] start\n\n", pipe_idx);
728c06986a4f38 Harry Wentland 2019-02-22 1569 dml20_rq_dlg_get_rq_params(mode_lib, &rq_param, e2e_pipe_param[pipe_idx].pipe.src);
728c06986a4f38 Harry Wentland 2019-02-22 1570 dml20_rq_dlg_get_dlg_params(mode_lib,
728c06986a4f38 Harry Wentland 2019-02-22 1571 e2e_pipe_param,
728c06986a4f38 Harry Wentland 2019-02-22 1572 num_pipes,
728c06986a4f38 Harry Wentland 2019-02-22 1573 pipe_idx,
728c06986a4f38 Harry Wentland 2019-02-22 1574 dlg_regs,
728c06986a4f38 Harry Wentland 2019-02-22 1575 ttu_regs,
728c06986a4f38 Harry Wentland 2019-02-22 1576 rq_param.dlg,
728c06986a4f38 Harry Wentland 2019-02-22 1577 dlg_sys_param,
728c06986a4f38 Harry Wentland 2019-02-22 1578 cstate_en,
728c06986a4f38 Harry Wentland 2019-02-22 1579 pstate_en);
728c06986a4f38 Harry Wentland 2019-02-22 1580 dml_print("DML_DLG: Calculation for pipe[%d] end\n", pipe_idx);
728c06986a4f38 Harry Wentland 2019-02-22 1581 }
728c06986a4f38 Harry Wentland 2019-02-22 1582
:::::: The code at line 1531 was first introduced by commit
:::::: 728c06986a4f386c7ec5e5170716e30b610c6d32 drm/amd/display: Add DCN2 changes to DML
:::::: TO: Harry Wentland <harry.wentland@....com>
:::::: CC: Alex Deucher <alexander.deucher@....com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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