Messages in this thread | | | Date | Sun, 4 Mar 2018 04:23:55 +0800 | From | kbuild test robot <> | Subject | [tip:WIP.sched/core 19/20] arch/tile/include/asm/switch_to.h:36:0: warning: "prepare_arch_switch" redefined |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.sched/core head: bb3aa6d89286e954fc5c670413c762dca3f4cc44 commit: 8c5e90d837fb1b1b0dda3db559b97bdab9c62853 [19/20] sched/headers: Simplify and clean up header usage in the scheduler config: tile-tilegx_defconfig (attached as .config) compiler: tilegx-linux-gcc (GCC) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 8c5e90d837fb1b1b0dda3db559b97bdab9c62853 # save the attached .config to linux build tree make.cross ARCH=tile
All warnings (new ones prefixed by >>):
In file included from kernel/sched/core.c:10:0: >> arch/tile/include/asm/switch_to.h:36:0: warning: "prepare_arch_switch" redefined #define prepare_arch_switch(next) _prepare_arch_switch(next)
In file included from kernel/sched/core.c:8:0: kernel/sched/sched.h:1392:0: note: this is the location of the previous definition # define prepare_arch_switch(next) do { } while (0) In file included from kernel/sched/core.c:10:0: >> arch/tile/include/asm/switch_to.h:58:0: warning: "finish_arch_post_lock_switch" redefined #define finish_arch_post_lock_switch() do { \ In file included from kernel/sched/core.c:8:0: kernel/sched/sched.h:1395:0: note: this is the location of the previous definition # define finish_arch_post_lock_switch() do { } while (0) -- In file included from kernel//sched/core.c:10:0: >> arch/tile/include/asm/switch_to.h:36:0: warning: "prepare_arch_switch" redefined #define prepare_arch_switch(next) _prepare_arch_switch(next) In file included from kernel//sched/core.c:8:0: kernel//sched/sched.h:1392:0: note: this is the location of the previous definition # define prepare_arch_switch(next) do { } while (0) In file included from kernel//sched/core.c:10:0: >> arch/tile/include/asm/switch_to.h:58:0: warning: "finish_arch_post_lock_switch" redefined #define finish_arch_post_lock_switch() do { \ In file included from kernel//sched/core.c:8:0: kernel//sched/sched.h:1395:0: note: this is the location of the previous definition # define finish_arch_post_lock_switch() do { } while (0)
vim +/prepare_arch_switch +36 arch/tile/include/asm/switch_to.h
bd119c69 David Howells 2012-03-28 32 bd119c69 David Howells 2012-03-28 33 /* bd119c69 David Howells 2012-03-28 34 * Pause the DMA engine and static network before task switching. bd119c69 David Howells 2012-03-28 35 */ bd119c69 David Howells 2012-03-28 @36 #define prepare_arch_switch(next) _prepare_arch_switch(next) bd119c69 David Howells 2012-03-28 37 void _prepare_arch_switch(struct task_struct *next); bd119c69 David Howells 2012-03-28 38 bd119c69 David Howells 2012-03-28 39 struct task_struct; bd119c69 David Howells 2012-03-28 40 #define switch_to(prev, next, last) ((last) = _switch_to((prev), (next))) bd119c69 David Howells 2012-03-28 41 extern struct task_struct *_switch_to(struct task_struct *prev, bd119c69 David Howells 2012-03-28 42 struct task_struct *next); bd119c69 David Howells 2012-03-28 43 bd119c69 David Howells 2012-03-28 44 /* Helper function for _switch_to(). */ bd119c69 David Howells 2012-03-28 45 extern struct task_struct *__switch_to(struct task_struct *prev, bd119c69 David Howells 2012-03-28 46 struct task_struct *next, bd119c69 David Howells 2012-03-28 47 unsigned long new_system_save_k_0); bd119c69 David Howells 2012-03-28 48 bd119c69 David Howells 2012-03-28 49 /* Address that switched-away from tasks are at. */ bd119c69 David Howells 2012-03-28 50 extern unsigned long get_switch_to_pc(void); bd119c69 David Howells 2012-03-28 51 bd119c69 David Howells 2012-03-28 52 /* bd119c69 David Howells 2012-03-28 53 * Kernel threads can check to see if they need to migrate their bd119c69 David Howells 2012-03-28 54 * stack whenever they return from a context switch; for user bd119c69 David Howells 2012-03-28 55 * threads, we defer until they are returning to user-space. fe363adb Chris Metcalf 2015-07-29 56 * We defer homecache migration until the runqueue lock is released. bd119c69 David Howells 2012-03-28 57 */ fe363adb Chris Metcalf 2015-07-29 @58 #define finish_arch_post_lock_switch() do { \ 1eaef888 Chris Metcalf 2015-08-05 59 __insn_mtspr(SPR_SIM_CONTROL, SIM_CONTROL_OS_SWITCH | \ 1eaef888 Chris Metcalf 2015-08-05 60 (current->pid << _SIM_CONTROL_OPERATOR_BITS)); \ bd119c69 David Howells 2012-03-28 61 if (current->mm == NULL && !kstack_hash && \ fe363adb Chris Metcalf 2015-07-29 62 current_thread_info()->homecache_cpu != raw_smp_processor_id()) \ bd119c69 David Howells 2012-03-28 63 homecache_migrate_kthread(); \ bd119c69 David Howells 2012-03-28 64 } while (0) bd119c69 David Howells 2012-03-28 65
:::::: The code at line 36 was first introduced by commit :::::: bd119c69239322caafdb64517a806037d0d0c70a Disintegrate asm/system.h for Tile
:::::: TO: David Howells <dhowells@redhat.com> :::::: CC: David Howells <dhowells@redhat.com>
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