Re: [PATCH v2 2/2] drm/msm: Expose client engine utilization via fdinfo

From: kernel test robot
Date: Tue Jun 07 2022 - 02:03:56 EST

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In reply to: Rob Clark: "[PATCH v2 2/2] drm/msm: Expose client engine utilization via fdinfo"
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Hi Rob,

I love your patch! Perhaps something to improve:

[auto build test WARNING on drm/drm-next]
[also build test WARNING on drm-intel/for-linux-next drm-tip/drm-tip v5.19-rc1 next-20220607]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/intel-lab-lkp/linux/commits/Rob-Clark/drm-Add-DRM_GEM_FOPS/20220607-035529
base: git://anongit.freedesktop.org/drm/drm drm-next
config: s390-buildonly-randconfig-r008-20220605 (https://download.01.org/0day-ci/archive/20220607/202206071325.FWDwmg2D-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project b92436efcb7813fc481b30f2593a4907568d917a)
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
# install s390 cross compiling tool for clang build
# apt-get install binutils-s390x-linux-gnu
# https://github.com/intel-lab-lkp/linux/commit/09342d3c56fa77dacb235908515f0a44ac2fc9c2
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Rob-Clark/drm-Add-DRM_GEM_FOPS/20220607-035529
git checkout 09342d3c56fa77dacb235908515f0a44ac2fc9c2
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/gpu/drm/amd/amdgpu/ drivers/gpu/drm/msm/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

In file included from drivers/gpu/drm/msm/msm_gpu.c:9:
In file included from drivers/gpu/drm/msm/msm_gpu.h:10:
In file included from include/linux/adreno-smmu-priv.h:9:
In file included from include/linux/io-pgtable.h:6:
In file included from include/linux/iommu.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
^
In file included from drivers/gpu/drm/msm/msm_gpu.c:9:
In file included from drivers/gpu/drm/msm/msm_gpu.h:10:
In file included from include/linux/adreno-smmu-priv.h:9:
In file included from include/linux/io-pgtable.h:6:
In file included from include/linux/iommu.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
^
In file included from drivers/gpu/drm/msm/msm_gpu.c:9:
In file included from drivers/gpu/drm/msm/msm_gpu.h:10:
In file included from include/linux/adreno-smmu-priv.h:9:
In file included from include/linux/io-pgtable.h:6:
In file included from include/linux/iommu.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
>> drivers/gpu/drm/msm/msm_gpu.c:158:46: warning: format specifies type 'unsigned long' but the argument has type 'uint32_t' (aka 'unsigned int') [-Wformat]
drm_printf(p, "drm-maxfreq-gpu:\t%lu Hz\n", gpu->fast_rate);
~~~ ^~~~~~~~~~~~~~
%u
In file included from drivers/gpu/drm/msm/msm_gpu.c:7:
In file included from include/drm/drm_drv.h:33:
In file included from include/drm/drm_device.h:5:
In file included from include/linux/kref.h:16:
In file included from include/linux/spinlock.h:93:
arch/s390/include/asm/spinlock.h:81:3: error: expected absolute expression
ALTERNATIVE("", ".insn rre,0xb2fa0000,7,0", 49) /* NIAI 7 */
^
arch/s390/include/asm/alternative.h:118:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:62:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if " len " > 254\n" \
^
<inline asm>:5:5: note: instantiated into assembly here
.if 6651b-6641b > 254
^
In file included from drivers/gpu/drm/msm/msm_gpu.c:7:
In file included from include/drm/drm_drv.h:33:
In file included from include/drm/drm_device.h:5:
In file included from include/linux/kref.h:16:
In file included from include/linux/spinlock.h:93:
arch/s390/include/asm/spinlock.h:81:3: error: cpu alternatives does not support instructions blocks > 254 bytes
ALTERNATIVE("", ".insn rre,0xb2fa0000,7,0", 49) /* NIAI 7 */
^
arch/s390/include/asm/alternative.h:118:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:63:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
"\t.error \"cpu alternatives does not support instructions " \
^
<inline asm>:6:2: note: instantiated into assembly here
.error "cpu alternatives does not support instructions blocks > 254 bytes"
^
In file included from drivers/gpu/drm/msm/msm_gpu.c:7:
In file included from include/drm/drm_drv.h:33:
In file included from include/drm/drm_device.h:5:
In file included from include/linux/kref.h:16:
In file included from include/linux/spinlock.h:93:
arch/s390/include/asm/spinlock.h:81:3: error: expected absolute expression
ALTERNATIVE("", ".insn rre,0xb2fa0000,7,0", 49) /* NIAI 7 */
^
arch/s390/include/asm/alternative.h:118:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:66:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
".if (" len ") %% 2\n" \
^
<inline asm>:8:5: note: instantiated into assembly here
.if (6651b-6641b) % 2
^
In file included from drivers/gpu/drm/msm/msm_gpu.c:7:
In file included from include/drm/drm_drv.h:33:
In file included from include/drm/drm_device.h:5:
In file included from include/linux/kref.h:16:
In file included from include/linux/spinlock.h:93:
arch/s390/include/asm/spinlock.h:81:3: error: cpu alternatives instructions length is odd
ALTERNATIVE("", ".insn rre,0xb2fa0000,7,0", 49) /* NIAI 7 */
^
arch/s390/include/asm/alternative.h:118:2: note: expanded from macro 'ALTERNATIVE'
ALTINSTR_REPLACEMENT(altinstr, 1) \
^
arch/s390/include/asm/alternative.h:113:2: note: expanded from macro 'ALTINSTR_REPLACEMENT'
INSTR_LEN_SANITY_CHECK(altinstr_len(num))
^
arch/s390/include/asm/alternative.h:67:3: note: expanded from macro 'INSTR_LEN_SANITY_CHECK'
"\t.error \"cpu alternatives instructions length is odd\"\n" \
^
<inline asm>:9:2: note: instantiated into assembly here
.error "cpu alternatives instructions length is odd"
^
In file included from drivers/gpu/drm/msm/msm_gpu.c:7:
In file included from include/drm/drm_drv.h:33:
In file included from include/drm/drm_device.h:5:
In file included from include/linux/kref.h:16:
In file included from include/linux/spinlock.h:93:
arch/s390/include/asm/spinlock.h:81:3: error: expected absolute expression
ALTERNATIVE("", ".insn rre,0xb2fa0000,7,0", 49) /* NIAI 7 */
^
arch/s390/include/asm/alternative.h:120:2: note: expanded from macro 'ALTERNATIVE'
OLDINSTR(oldinstr, 1) \
^
arch/s390/include/asm/alternative.h:90:2: note: expanded from macro 'OLDINSTR'
OLDINSTR_PADDING(oldinstr, num) \
^
arch/s390/include/asm/alternative.h:71:3: note: expanded from macro 'OLDINSTR_PADDING'
".if " oldinstr_pad_len(num) " > 6\n" \
^

vim +158 drivers/gpu/drm/msm/msm_gpu.c

150
151 void msm_gpu_show_fdinfo(struct msm_gpu *gpu, struct msm_file_private *ctx,
152 struct drm_printer *p)
153 {
154 drm_printf(p, "drm-driver:\t%s\n", gpu->dev->driver->name);
155 drm_printf(p, "drm-client-id:\t%u\n", ctx->seqno);
156 drm_printf(p, "drm-engine-gpu:\t%llu ns\n", ctx->elapsed_ns);
157 drm_printf(p, "drm-cycles-gpu:\t%llu\n", ctx->cycles);
> 158 drm_printf(p, "drm-maxfreq-gpu:\t%lu Hz\n", gpu->fast_rate);
159 }
160

--
0-DAY CI Kernel Test Service
https://01.org/lkp

Next message: Ahmad Fatoum: "Re: [PATCH -next] evm: Use IS_ENABLED to initialize .enabled"
Previous message: Luiz Augusto von Dentz: "Re: [PATCH] net/bluetooth: fix erroneous use of bitmap_from_u64()"
In reply to: Rob Clark: "[PATCH v2 2/2] drm/msm: Expose client engine utilization via fdinfo"
Next in thread: Tvrtko Ursulin: "Re: [PATCH v2 2/2] drm/msm: Expose client engine utilization via fdinfo"
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