On Thu, Apr 04, 2024 at 05:13:20AM +0800, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: 727900b675b749c40ba1f6669c7ae5eb7eb8e837 > commit: df35ee400e06b23ecd44fdb66451a5343932f834 [2524/3504] riscv: Emulate one-byte and two-byte cmpxchg > config: riscv-nommu_virt_defconfig (https://download.01.org/0day-ci/archive/20240404/202404040526.GVzaL2io-lkp@xxxxxxxxx/config) > compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 546dc2245ffc4cccd0b05b58b7a5955e355a3b27) > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240404/202404040526.GVzaL2io-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/202404040526.GVzaL2io-lkp@xxxxxxxxx/ I believe that this is fixed by the following updated commit in -rcu: 27011e7159ef ("riscv: Emulate one-byte cmpxchg") But please let me know if I am missing something. Thanx, Paul > All errors (new ones prefixed by >>): > > In file included from kernel/locking/rtmutex_api.c:9: > >> kernel/locking/rtmutex.c:218:9: error: incompatible pointer to integer conversion passing 'typeof (*(((__ai_ptr))))' (aka 'struct task_struct *') to parameter of type 'uintptr_t' (aka 'unsigned long') [-Wint-conversion] > 218 | return try_cmpxchg_acquire(&lock->owner, &old, new); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-instrumented.h:4889:2: note: expanded from macro 'try_cmpxchg_acquire' > 4889 | raw_try_cmpxchg_acquire(__ai_ptr, __ai_oldp, __VA_ARGS__); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:210:9: note: expanded from macro 'raw_try_cmpxchg_acquire' > 210 | ___r = raw_cmpxchg_acquire((_ptr), ___o, (_new)); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:65:29: note: expanded from macro 'raw_cmpxchg_acquire' > 65 | #define raw_cmpxchg_acquire arch_cmpxchg_acquire > | ^ > arch/riscv/include/asm/cmpxchg.h:264:23: note: expanded from macro 'arch_cmpxchg_acquire' > 264 | (__typeof__(*(ptr))) __cmpxchg_acquire((ptr), \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 265 | _o_, _n_, sizeof(*(ptr))); \ > | ~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/riscv/include/asm/cmpxchg.h:225:48: note: expanded from macro '__cmpxchg_acquire' > 225 | __ret = cmpxchg_emu_u8((volatile u8 *)__ptr, __old, __new); \ > | ^~~~~ > include/linux/cmpxchg-emu.h:13:52: note: passing argument to parameter 'old' here > 13 | uintptr_t cmpxchg_emu_u8(volatile u8 *p, uintptr_t old, uintptr_t new); > | ^ > In file included from kernel/locking/rtmutex_api.c:9: > >> kernel/locking/rtmutex.c:218:9: error: incompatible pointer to integer conversion passing 'typeof (*(((__ai_ptr))))' (aka 'struct task_struct *') to parameter of type 'uintptr_t' (aka 'unsigned long') [-Wint-conversion] > 218 | return try_cmpxchg_acquire(&lock->owner, &old, new); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-instrumented.h:4889:2: note: expanded from macro 'try_cmpxchg_acquire' > 4889 | raw_try_cmpxchg_acquire(__ai_ptr, __ai_oldp, __VA_ARGS__); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:210:9: note: expanded from macro 'raw_try_cmpxchg_acquire' > 210 | ___r = raw_cmpxchg_acquire((_ptr), ___o, (_new)); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:65:29: note: expanded from macro 'raw_cmpxchg_acquire' > 65 | #define raw_cmpxchg_acquire arch_cmpxchg_acquire > | ^ > arch/riscv/include/asm/cmpxchg.h:264:23: note: expanded from macro 'arch_cmpxchg_acquire' > 264 | (__typeof__(*(ptr))) __cmpxchg_acquire((ptr), \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 265 | _o_, _n_, sizeof(*(ptr))); \ > | ~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/riscv/include/asm/cmpxchg.h:225:55: note: expanded from macro '__cmpxchg_acquire' > 225 | __ret = cmpxchg_emu_u8((volatile u8 *)__ptr, __old, __new); \ > | ^~~~~ > include/linux/cmpxchg-emu.h:13:67: note: passing argument to parameter 'new' here > 13 | uintptr_t cmpxchg_emu_u8(volatile u8 *p, uintptr_t old, uintptr_t new); > | ^ > In file included from kernel/locking/rtmutex_api.c:9: > >> kernel/locking/rtmutex.c:218:9: error: incompatible integer to pointer conversion assigning to 'typeof (*(((__ai_ptr))))' (aka 'struct task_struct *') from 'uintptr_t' (aka 'unsigned long') [-Wint-conversion] > 218 | return try_cmpxchg_acquire(&lock->owner, &old, new); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-instrumented.h:4889:2: note: expanded from macro 'try_cmpxchg_acquire' > 4889 | raw_try_cmpxchg_acquire(__ai_ptr, __ai_oldp, __VA_ARGS__); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:210:9: note: expanded from macro 'raw_try_cmpxchg_acquire' > 210 | ___r = raw_cmpxchg_acquire((_ptr), ___o, (_new)); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:65:29: note: expanded from macro 'raw_cmpxchg_acquire' > 65 | #define raw_cmpxchg_acquire arch_cmpxchg_acquire > | ^ > arch/riscv/include/asm/cmpxchg.h:264:23: note: expanded from macro 'arch_cmpxchg_acquire' > 264 | (__typeof__(*(ptr))) __cmpxchg_acquire((ptr), \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 265 | _o_, _n_, sizeof(*(ptr))); \ > | ~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/riscv/include/asm/cmpxchg.h:225:9: note: expanded from macro '__cmpxchg_acquire' > 225 | __ret = cmpxchg_emu_u8((volatile u8 *)__ptr, __old, __new); \ > | ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > In file included from kernel/locking/rtmutex_api.c:9: > >> kernel/locking/rtmutex.c:218:9: error: incompatible pointer to integer conversion passing 'typeof (*(((__ai_ptr))))' (aka 'struct task_struct *') to parameter of type 'uintptr_t' (aka 'unsigned long') [-Wint-conversion] > 218 | return try_cmpxchg_acquire(&lock->owner, &old, new); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-instrumented.h:4889:2: note: expanded from macro 'try_cmpxchg_acquire' > 4889 | raw_try_cmpxchg_acquire(__ai_ptr, __ai_oldp, __VA_ARGS__); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:210:9: note: expanded from macro 'raw_try_cmpxchg_acquire' > 210 | ___r = raw_cmpxchg_acquire((_ptr), ___o, (_new)); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:65:29: note: expanded from macro 'raw_cmpxchg_acquire' > 65 | #define raw_cmpxchg_acquire arch_cmpxchg_acquire > | ^ > arch/riscv/include/asm/cmpxchg.h:264:23: note: expanded from macro 'arch_cmpxchg_acquire' > 264 | (__typeof__(*(ptr))) __cmpxchg_acquire((ptr), \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 265 | _o_, _n_, sizeof(*(ptr))); \ > | ~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/riscv/include/asm/cmpxchg.h:229:50: note: expanded from macro '__cmpxchg_acquire' > 229 | __ret = cmpxchg_emu_u16((volatile u16 *)__ptr, __old, __new); \ > | ^~~~~ > include/linux/cmpxchg-emu.h:14:54: note: passing argument to parameter 'old' here > 14 | uintptr_t cmpxchg_emu_u16(volatile u16 *p, uintptr_t old, uintptr_t new); > | ^ > In file included from kernel/locking/rtmutex_api.c:9: > >> kernel/locking/rtmutex.c:218:9: error: incompatible pointer to integer conversion passing 'typeof (*(((__ai_ptr))))' (aka 'struct task_struct *') to parameter of type 'uintptr_t' (aka 'unsigned long') [-Wint-conversion] > 218 | return try_cmpxchg_acquire(&lock->owner, &old, new); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-instrumented.h:4889:2: note: expanded from macro 'try_cmpxchg_acquire' > 4889 | raw_try_cmpxchg_acquire(__ai_ptr, __ai_oldp, __VA_ARGS__); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:210:9: note: expanded from macro 'raw_try_cmpxchg_acquire' > 210 | ___r = raw_cmpxchg_acquire((_ptr), ___o, (_new)); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:65:29: note: expanded from macro 'raw_cmpxchg_acquire' > 65 | #define raw_cmpxchg_acquire arch_cmpxchg_acquire > | ^ > arch/riscv/include/asm/cmpxchg.h:264:23: note: expanded from macro 'arch_cmpxchg_acquire' > 264 | (__typeof__(*(ptr))) __cmpxchg_acquire((ptr), \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 265 | _o_, _n_, sizeof(*(ptr))); \ > | ~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/riscv/include/asm/cmpxchg.h:229:57: note: expanded from macro '__cmpxchg_acquire' > 229 | __ret = cmpxchg_emu_u16((volatile u16 *)__ptr, __old, __new); \ > | ^~~~~ > include/linux/cmpxchg-emu.h:14:69: note: passing argument to parameter 'new' here > 14 | uintptr_t cmpxchg_emu_u16(volatile u16 *p, uintptr_t old, uintptr_t new); > | ^ > In file included from kernel/locking/rtmutex_api.c:9: > >> kernel/locking/rtmutex.c:218:9: error: incompatible integer to pointer conversion assigning to 'typeof (*(((__ai_ptr))))' (aka 'struct task_struct *') from 'uintptr_t' (aka 'unsigned long') [-Wint-conversion] > 218 | return try_cmpxchg_acquire(&lock->owner, &old, new); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-instrumented.h:4889:2: note: expanded from macro 'try_cmpxchg_acquire' > 4889 | raw_try_cmpxchg_acquire(__ai_ptr, __ai_oldp, __VA_ARGS__); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:210:9: note: expanded from macro 'raw_try_cmpxchg_acquire' > 210 | ___r = raw_cmpxchg_acquire((_ptr), ___o, (_new)); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:65:29: note: expanded from macro 'raw_cmpxchg_acquire' > 65 | #define raw_cmpxchg_acquire arch_cmpxchg_acquire > | ^ > arch/riscv/include/asm/cmpxchg.h:264:23: note: expanded from macro 'arch_cmpxchg_acquire' > 264 | (__typeof__(*(ptr))) __cmpxchg_acquire((ptr), \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 265 | _o_, _n_, sizeof(*(ptr))); \ > | ~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/riscv/include/asm/cmpxchg.h:229:9: note: expanded from macro '__cmpxchg_acquire' > 229 | __ret = cmpxchg_emu_u16((volatile u16 *)__ptr, __old, __new); \ > | ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > In file included from kernel/locking/rtmutex_api.c:9: > kernel/locking/rtmutex.c:230:9: error: incompatible pointer to integer conversion passing 'typeof (*(((__ai_ptr))))' (aka 'struct task_struct *') to parameter of type 'uintptr_t' (aka 'unsigned long') [-Wint-conversion] > 230 | return try_cmpxchg_release(&lock->owner, &old, new); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-instrumented.h:4899:2: note: expanded from macro 'try_cmpxchg_release' > 4899 | raw_try_cmpxchg_release(__ai_ptr, __ai_oldp, __VA_ARGS__); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:228:9: note: expanded from macro 'raw_try_cmpxchg_release' > 228 | ___r = raw_cmpxchg_release((_ptr), ___o, (_new)); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' > 77 | #define raw_cmpxchg_release arch_cmpxchg_release > | ^ > arch/riscv/include/asm/cmpxchg.h:316:23: note: expanded from macro 'arch_cmpxchg_release' > 316 | (__typeof__(*(ptr))) __cmpxchg_release((ptr), \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 317 | _o_, _n_, sizeof(*(ptr))); \ > | ~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/riscv/include/asm/cmpxchg.h:277:48: note: expanded from macro '__cmpxchg_release' > 277 | __ret = cmpxchg_emu_u8((volatile u8 *)__ptr, __old, __new); \ > | ^~~~~ > include/linux/cmpxchg-emu.h:13:52: note: passing argument to parameter 'old' here > 13 | uintptr_t cmpxchg_emu_u8(volatile u8 *p, uintptr_t old, uintptr_t new); > | ^ > In file included from kernel/locking/rtmutex_api.c:9: > kernel/locking/rtmutex.c:230:9: error: incompatible pointer to integer conversion passing 'typeof (*(((__ai_ptr))))' (aka 'struct task_struct *') to parameter of type 'uintptr_t' (aka 'unsigned long') [-Wint-conversion] > 230 | return try_cmpxchg_release(&lock->owner, &old, new); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-instrumented.h:4899:2: note: expanded from macro 'try_cmpxchg_release' > 4899 | raw_try_cmpxchg_release(__ai_ptr, __ai_oldp, __VA_ARGS__); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:228:9: note: expanded from macro 'raw_try_cmpxchg_release' > 228 | ___r = raw_cmpxchg_release((_ptr), ___o, (_new)); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' > 77 | #define raw_cmpxchg_release arch_cmpxchg_release > | ^ > arch/riscv/include/asm/cmpxchg.h:316:23: note: expanded from macro 'arch_cmpxchg_release' > 316 | (__typeof__(*(ptr))) __cmpxchg_release((ptr), \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 317 | _o_, _n_, sizeof(*(ptr))); \ > | ~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/riscv/include/asm/cmpxchg.h:277:55: note: expanded from macro '__cmpxchg_release' > 277 | __ret = cmpxchg_emu_u8((volatile u8 *)__ptr, __old, __new); \ > | ^~~~~ > include/linux/cmpxchg-emu.h:13:67: note: passing argument to parameter 'new' here > 13 | uintptr_t cmpxchg_emu_u8(volatile u8 *p, uintptr_t old, uintptr_t new); > | ^ > In file included from kernel/locking/rtmutex_api.c:9: > kernel/locking/rtmutex.c:230:9: error: incompatible integer to pointer conversion assigning to 'typeof (*(((__ai_ptr))))' (aka 'struct task_struct *') from 'uintptr_t' (aka 'unsigned long') [-Wint-conversion] > 230 | return try_cmpxchg_release(&lock->owner, &old, new); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-instrumented.h:4899:2: note: expanded from macro 'try_cmpxchg_release' > 4899 | raw_try_cmpxchg_release(__ai_ptr, __ai_oldp, __VA_ARGS__); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:228:9: note: expanded from macro 'raw_try_cmpxchg_release' > 228 | ___r = raw_cmpxchg_release((_ptr), ___o, (_new)); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' > 77 | #define raw_cmpxchg_release arch_cmpxchg_release > | ^ > arch/riscv/include/asm/cmpxchg.h:316:23: note: expanded from macro 'arch_cmpxchg_release' > 316 | (__typeof__(*(ptr))) __cmpxchg_release((ptr), \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > 317 | _o_, _n_, sizeof(*(ptr))); \ > | ~~~~~~~~~~~~~~~~~~~~~~~~~ > arch/riscv/include/asm/cmpxchg.h:277:9: note: expanded from macro '__cmpxchg_release' > 277 | __ret = cmpxchg_emu_u8((volatile u8 *)__ptr, __old, __new); \ > | ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > In file included from kernel/locking/rtmutex_api.c:9: > kernel/locking/rtmutex.c:230:9: error: incompatible pointer to integer conversion passing 'typeof (*(((__ai_ptr))))' (aka 'struct task_struct *') to parameter of type 'uintptr_t' (aka 'unsigned long') [-Wint-conversion] > 230 | return try_cmpxchg_release(&lock->owner, &old, new); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-instrumented.h:4899:2: note: expanded from macro 'try_cmpxchg_release' > 4899 | raw_try_cmpxchg_release(__ai_ptr, __ai_oldp, __VA_ARGS__); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:228:9: note: expanded from macro 'raw_try_cmpxchg_release' > 228 | ___r = raw_cmpxchg_release((_ptr), ___o, (_new)); \ > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > include/linux/atomic/atomic-arch-fallback.h:77:29: note: expanded from macro 'raw_cmpxchg_release' > 77 | #define raw_cmpxchg_release arch_cmpxchg_release > > > vim +218 kernel/locking/rtmutex.c > > 23f78d4a03c53c kernel/rtmutex.c Ingo Molnar 2006-06-27 208 > bd197234b0a616 kernel/rtmutex.c Thomas Gleixner 2007-06-17 209 /* > cede88418b385b kernel/locking/rtmutex.c Sebastian Andrzej Siewior 2015-02-25 210 * We can speed up the acquire/release, if there's no debugging state to be > cede88418b385b kernel/locking/rtmutex.c Sebastian Andrzej Siewior 2015-02-25 211 * set up. > bd197234b0a616 kernel/rtmutex.c Thomas Gleixner 2007-06-17 212 */ > cede88418b385b kernel/locking/rtmutex.c Sebastian Andrzej Siewior 2015-02-25 213 #ifndef CONFIG_DEBUG_RT_MUTEXES > 830e6acc8a1caf kernel/locking/rtmutex.c Peter Zijlstra 2021-08-15 214 static __always_inline bool rt_mutex_cmpxchg_acquire(struct rt_mutex_base *lock, > 785159301bedea kernel/locking/rtmutex.c Sebastian Andrzej Siewior 2021-08-15 215 struct task_struct *old, > 785159301bedea kernel/locking/rtmutex.c Sebastian Andrzej Siewior 2021-08-15 216 struct task_struct *new) > 785159301bedea kernel/locking/rtmutex.c Sebastian Andrzej Siewior 2021-08-15 217 { > 709e0b62869f62 kernel/locking/rtmutex.c Thomas Gleixner 2021-08-15 @218 return try_cmpxchg_acquire(&lock->owner, &old, new); > 785159301bedea kernel/locking/rtmutex.c Sebastian Andrzej Siewior 2021-08-15 219 } > 785159301bedea kernel/locking/rtmutex.c Sebastian Andrzej Siewior 2021-08-15 220 > > :::::: The code at line 218 was first introduced by commit > :::::: 709e0b62869f625afd18edd79f190c38cb39dfb2 locking/rtmutex: Switch to from cmpxchg_*() to try_cmpxchg_*() > > :::::: TO: Thomas Gleixner <tglx@xxxxxxxxxxxxx> > :::::: CC: Ingo Molnar <mingo@xxxxxxxxxx> > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki
