[kbuild-all] drivers/clocksource/timer-riscv.c:28:16: error: implicit declaration of function 'get_cycles64'

Friday, 20 November 2020

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   c2e7554e1b85935d962127efa3c2a76483b0b3b6
commit: d5be89a8d118a8e8d09cd74a921a808f17fbdd09 RISC-V: Resurrect the MMIO timer
implementation for M-mode systems
date:   9 weeks ago
config: riscv-randconfig-r001-20201119 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project
b2613fb2f0f53691dd0211895afbb9413457fca7)
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 riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        #
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit...
        git remote add linus
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout d5be89a8d118a8e8d09cd74a921a808f17fbdd09
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com&gt;

All errors (new ones prefixed by >>):

   In file included from drivers/clocksource/timer-riscv.c:10:
   In file included from include/linux/clocksource.h:21:
   In file included from arch/riscv/include/asm/io.h:148:
   include/asm-generic/io.h:556:9: warning: performing pointer arithmetic on a null
pointer has undefined behavior [-Wnull-pointer-arithmetic]
           return inb(addr);
                  ^~~~~~~~~
   arch/riscv/include/asm/io.h:54:76: note: expanded from macro 'inb'
   #define inb(c)          ({ u8  __v; __io_pbr(); __v = readb_cpu((void*)(PCI_IOBASE +
(c))); __io_par(__v); __v; })
                                                                           ~~~~~~~~~~ ^
   arch/riscv/include/asm/mmio.h:87:48: note: expanded from macro 'readb_cpu'
   #define readb_cpu(c)            ({ u8  __r = __raw_readb(c); __r; })
                                                            ^
   In file included from drivers/clocksource/timer-riscv.c:10:
   In file included from include/linux/clocksource.h:21:
   In file included from arch/riscv/include/asm/io.h:148:
   include/asm-generic/io.h:564:9: warning: performing pointer arithmetic on a null
pointer has undefined behavior [-Wnull-pointer-arithmetic]
           return inw(addr);
                  ^~~~~~~~~
   arch/riscv/include/asm/io.h:55:76: note: expanded from macro 'inw'
   #define inw(c)          ({ u16 __v; __io_pbr(); __v = readw_cpu((void*)(PCI_IOBASE +
(c))); __io_par(__v); __v; })
                                                                           ~~~~~~~~~~ ^
   arch/riscv/include/asm/mmio.h:88:76: note: expanded from macro 'readw_cpu'
   #define readw_cpu(c)            ({ u16 __r = le16_to_cpu((__force
__le16)__raw_readw(c)); __r; })
                                                                                        ^
   include/uapi/linux/byteorder/little_endian.h:36:51: note: expanded from macro
'__le16_to_cpu'
   #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
                                                     ^
   In file included from drivers/clocksource/timer-riscv.c:10:
   In file included from include/linux/clocksource.h:21:
   In file included from arch/riscv/include/asm/io.h:148:
   include/asm-generic/io.h:572:9: warning: performing pointer arithmetic on a null
pointer has undefined behavior [-Wnull-pointer-arithmetic]
           return inl(addr);
                  ^~~~~~~~~
   arch/riscv/include/asm/io.h:56:76: note: expanded from macro 'inl'
   #define inl(c)          ({ u32 __v; __io_pbr(); __v = readl_cpu((void*)(PCI_IOBASE +
(c))); __io_par(__v); __v; })
                                                                           ~~~~~~~~~~ ^
   arch/riscv/include/asm/mmio.h:89:76: note: expanded from macro 'readl_cpu'
   #define readl_cpu(c)            ({ u32 __r = le32_to_cpu((__force
__le32)__raw_readl(c)); __r; })
                                                                                        ^
   include/uapi/linux/byteorder/little_endian.h:34:51: note: expanded from macro
'__le32_to_cpu'
   #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
                                                     ^
   In file included from drivers/clocksource/timer-riscv.c:10:
   In file included from include/linux/clocksource.h:21:
   In file included from arch/riscv/include/asm/io.h:148:
   include/asm-generic/io.h:580:2: warning: performing pointer arithmetic on a null
pointer has undefined behavior [-Wnull-pointer-arithmetic]
           outb(value, addr);
           ^~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:58:68: note: expanded from macro 'outb'
   #define outb(v,c)       ({ __io_pbw(); writeb_cpu((v),(void*)(PCI_IOBASE + (c)));
__io_paw(); })
                                                                 ~~~~~~~~~~ ^
   arch/riscv/include/asm/mmio.h:91:52: note: expanded from macro 'writeb_cpu'
   #define writeb_cpu(v, c)        ((void)__raw_writeb((v), (c)))
                                                             ^
   In file included from drivers/clocksource/timer-riscv.c:10:
   In file included from include/linux/clocksource.h:21:
   In file included from arch/riscv/include/asm/io.h:148:
   include/asm-generic/io.h:588:2: warning: performing pointer arithmetic on a null
pointer has undefined behavior [-Wnull-pointer-arithmetic]
           outw(value, addr);
           ^~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:59:68: note: expanded from macro 'outw'
   #define outw(v,c)       ({ __io_pbw(); writew_cpu((v),(void*)(PCI_IOBASE + (c)));
__io_paw(); })
                                                                 ~~~~~~~~~~ ^
   arch/riscv/include/asm/mmio.h:92:76: note: expanded from macro 'writew_cpu'
   #define writew_cpu(v, c)        ((void)__raw_writew((__force u16)cpu_to_le16(v), (c)))
                                                                                     ^
   In file included from drivers/clocksource/timer-riscv.c:10:
   In file included from include/linux/clocksource.h:21:
   In file included from arch/riscv/include/asm/io.h:148:
   include/asm-generic/io.h:596:2: warning: performing pointer arithmetic on a null
pointer has undefined behavior [-Wnull-pointer-arithmetic]
           outl(value, addr);
           ^~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:60:68: note: expanded from macro 'outl'
   #define outl(v,c)       ({ __io_pbw(); writel_cpu((v),(void*)(PCI_IOBASE + (c)));
__io_paw(); })
                                                                 ~~~~~~~~~~ ^
   arch/riscv/include/asm/mmio.h:93:76: note: expanded from macro 'writel_cpu'
   #define writel_cpu(v, c)        ((void)__raw_writel((__force u32)cpu_to_le32(v), (c)))
                                                                                     ^
   In file included from drivers/clocksource/timer-riscv.c:10:
   In file included from include/linux/clocksource.h:21:
   In file included from arch/riscv/include/asm/io.h:148:
   include/asm-generic/io.h:1017:55: warning: performing pointer arithmetic on a null
pointer has undefined behavior [-Wnull-pointer-arithmetic]
           return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
                                                     ~~~~~~~~~~ ^
...
> drivers/clocksource/timer-riscv.c:28:16: error: implicit
declaration of function 'get_cycles64' [-Werror,-Wimplicit-function-declaration]
           sbi_set_timer(get_cycles64() + delta);
                         ^
   drivers/clocksource/timer-riscv.c:28:16: note: did you mean 'get_cycles'?
   arch/riscv/include/asm/timex.h:18:24: note: 'get_cycles' declared here
   static inline cycles_t get_cycles(void)
                          ^
   drivers/clocksource/timer-riscv.c:47:9: error: implicit declaration of function
'get_cycles64' [-Werror,-Wimplicit-function-declaration]
           return get_cycles64();
                  ^
   drivers/clocksource/timer-riscv.c:52:9: error: implicit declaration of function
'get_cycles64' [-Werror,-Wimplicit-function-declaration]
           return get_cycles64();
                  ^
   7 warnings and 3 errors generated.

vim +/get_cycles64 +28 drivers/clocksource/timer-riscv.c

62b0194368147de drivers/clocksource/riscv_timer.c Palmer Dabbelt    2018-08-04 @10 
#include <linux/clocksource.h>
62b0194368147de drivers/clocksource/riscv_timer.c Palmer Dabbelt    2018-08-04  11 
#include <linux/clockchips.h>
62b0194368147de drivers/clocksource/riscv_timer.c Palmer Dabbelt    2018-08-04  12 
#include <linux/cpu.h>
62b0194368147de drivers/clocksource/riscv_timer.c Palmer Dabbelt    2018-08-04  13 
#include <linux/delay.h>
62b0194368147de drivers/clocksource/riscv_timer.c Palmer Dabbelt    2018-08-04  14 
#include <linux/irq.h>
033a65de7eced89 drivers/clocksource/timer-riscv.c Anup Patel        2020-06-01  15 
#include <linux/irqdomain.h>
92e0d143fdef1fa drivers/clocksource/riscv_timer.c Anup Patel        2018-12-04  16 
#include <linux/sched_clock.h>
4f9bbcefa142862 drivers/clocksource/timer-riscv.c Christoph Hellwig 2019-10-28  17 
#include <linux/io-64-nonatomic-lo-hi.h>
033a65de7eced89 drivers/clocksource/timer-riscv.c Anup Patel        2020-06-01  18 
#include <linux/interrupt.h>
033a65de7eced89 drivers/clocksource/timer-riscv.c Anup Patel        2020-06-01  19 
#include <linux/of_irq.h>
f99fb607fb2bc0d drivers/clocksource/riscv_timer.c Atish Patra       2018-10-02  20 
#include <asm/smp.h>
62b0194368147de drivers/clocksource/riscv_timer.c Palmer Dabbelt    2018-08-04  21 
#include <asm/sbi.h>
2bc3fc877aa9c4c drivers/clocksource/timer-riscv.c Anup Patel        2020-08-17  22 
#include <asm/timex.h>
4f9bbcefa142862 drivers/clocksource/timer-riscv.c Christoph Hellwig 2019-10-28  23  
62b0194368147de drivers/clocksource/riscv_timer.c Palmer Dabbelt    2018-08-04  24  static
int riscv_clock_next_event(unsigned long delta,
62b0194368147de drivers/clocksource/riscv_timer.c Palmer Dabbelt    2018-08-04  25 
		struct clock_event_device *ce)
62b0194368147de drivers/clocksource/riscv_timer.c Palmer Dabbelt    2018-08-04  26  {
a4c3733d32a72f1 drivers/clocksource/timer-riscv.c Christoph Hellwig 2019-10-28  27 
	csr_set(CSR_IE, IE_TIE);
62b0194368147de drivers/clocksource/riscv_timer.c Palmer Dabbelt    2018-08-04 @28 
	sbi_set_timer(get_cycles64() + delta);
62b0194368147de drivers/clocksource/riscv_timer.c Palmer Dabbelt    2018-08-04  29 
	return 0;
62b0194368147de drivers/clocksource/riscv_timer.c Palmer Dabbelt    2018-08-04  30  }
62b0194368147de drivers/clocksource/riscv_timer.c Palmer Dabbelt    2018-08-04  31  

:::::: The code at line 28 was first introduced by commit
:::::: 62b0194368147def8c5a77ce604a125d620fc582 clocksource: new RISC-V SBI timer driver

:::::: TO: Palmer Dabbelt <palmer(a)dabbelt.com&gt;
:::::: CC: Palmer Dabbelt <palmer(a)sifive.com&gt;

---
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[kbuild-all] drivers/clocksource/timer-riscv.c:28:16: error: implicit declaration of function 'get_cycles64'