Re: [PATCH v3 1/2] perf/marvell: Odyssey DDR Performance monitor support
From: kernel test robot
Date: Thu Jan 25 2024 - 09:07:11 EST
Hi Gowthami,
kernel test robot noticed the following build warnings:
[auto build test WARNING on soc/for-next]
[also build test WARNING on linus/master v6.8-rc1 next-20240125]
[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#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Gowthami-Thiagarajan/perf-marvell-Odyssey-DDR-Performance-monitor-support/20240122-205209
base: https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git for-next
patch link: https://lore.kernel.org/r/20240122124933.1311925-2-gthiagarajan%40marvell.com
patch subject: [PATCH v3 1/2] perf/marvell: Odyssey DDR Performance monitor support
config: s390-randconfig-001-20240125 (https://download.01.org/0day-ci/archive/20240125/202401252104.CFnKSeTe-lkp@xxxxxxxxx/config)
compiler: clang version 18.0.0git (https://github.com/llvm/llvm-project a31a60074717fc40887cfe132b77eec93bedd307)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240125/202401252104.CFnKSeTe-lkp@xxxxxxxxx/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401252104.CFnKSeTe-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
In file included from drivers/perf/marvell_cn10k_ddr_pmu.c:9:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:78:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
547 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
560 | 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'
37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
| ^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
| ^
In file included from drivers/perf/marvell_cn10k_ddr_pmu.c:9:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:78:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
573 | 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'
35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
| ^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
| ^
In file included from drivers/perf/marvell_cn10k_ddr_pmu.c:9:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:78:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
584 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
692 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
700 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
708 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
717 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
726 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
735 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
>> drivers/perf/marvell_cn10k_ddr_pmu.c:179:43: warning: unused variable 'cn10k_ddr_pmu_pdata' [-Wunused-const-variable]
179 | static const struct ddr_pmu_platform_data cn10k_ddr_pmu_pdata = {
| ^~~~~~~~~~~~~~~~~~~
>> drivers/perf/marvell_cn10k_ddr_pmu.c:195:43: warning: unused variable 'odyssey_ddr_pmu_pdata' [-Wunused-const-variable]
195 | static const struct ddr_pmu_platform_data odyssey_ddr_pmu_pdata = {
| ^~~~~~~~~~~~~~~~~~~~~
14 warnings generated.
vim +/cn10k_ddr_pmu_pdata +179 drivers/perf/marvell_cn10k_ddr_pmu.c
178
> 179 static const struct ddr_pmu_platform_data cn10k_ddr_pmu_pdata = {
180 .counter_overflow_val = BIT_ULL(48),
181 .counter_max_val = GENMASK_ULL(48, 0),
182 .ddrc_perf_cnt_base = CN10K_DDRC_PERF_CNT_VALUE_BASE,
183 .ddrc_perf_cfg_base = CN10K_DDRC_PERF_CFG_BASE,
184 .ddrc_perf_cnt_op_mode_ctrl = CN10K_DDRC_PERF_CNT_OP_MODE_CTRL,
185 .ddrc_perf_cnt_start_op_ctrl = CN10K_DDRC_PERF_CNT_START_OP_CTRL,
186 .ddrc_perf_cnt_end_op_ctrl = CN10K_DDRC_PERF_CNT_END_OP_CTRL,
187 .ddrc_perf_cnt_end_status = CN10K_DDRC_PERF_CNT_END_STATUS,
188 .ddrc_perf_cnt_freerun_en = CN10K_DDRC_PERF_CNT_FREERUN_EN,
189 .ddrc_perf_cnt_freerun_ctrl = CN10K_DDRC_PERF_CNT_FREERUN_CTRL,
190 .ddrc_perf_cnt_freerun_clr = 0,
191 .ddrc_perf_cnt_value_wr_op = CN10K_DDRC_PERF_CNT_VALUE_WR_OP,
192 .ddrc_perf_cnt_value_rd_op = CN10K_DDRC_PERF_CNT_VALUE_RD_OP,
193 };
194
> 195 static const struct ddr_pmu_platform_data odyssey_ddr_pmu_pdata = {
196 .counter_overflow_val = 0,
197 .counter_max_val = GENMASK_ULL(63, 0),
198 .ddrc_perf_cnt_base = ODY_DDRC_PERF_CNT_VALUE_BASE,
199 .ddrc_perf_cfg_base = ODY_DDRC_PERF_CFG_BASE,
200 .ddrc_perf_cnt_op_mode_ctrl = ODY_DDRC_PERF_CNT_OP_MODE_CTRL,
201 .ddrc_perf_cnt_start_op_ctrl = ODY_DDRC_PERF_CNT_START_OP_CTRL,
202 .ddrc_perf_cnt_end_op_ctrl = ODY_DDRC_PERF_CNT_END_OP_CTRL,
203 .ddrc_perf_cnt_end_status = ODY_DDRC_PERF_CNT_END_STATUS,
204 .ddrc_perf_cnt_freerun_en = 0,
205 .ddrc_perf_cnt_freerun_ctrl = ODY_DDRC_PERF_CNT_FREERUN_CTRL,
206 .ddrc_perf_cnt_freerun_clr = ODY_DDRC_PERF_CNT_FREERUN_CLR,
207 .ddrc_perf_cnt_value_wr_op = ODY_DDRC_PERF_CNT_VALUE_WR_OP,
208 .ddrc_perf_cnt_value_rd_op = ODY_DDRC_PERF_CNT_VALUE_RD_OP,
209 };
210
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