All of lore.kernel.org
 help / color / mirror / Atom feed
* [PATCH] kernel/sched/core: Print the time when the process entered the D state
@ 2021-07-09  5:05 zhouchuangao
  2021-07-09  6:53   ` kernel test robot
                   ` (2 more replies)
  0 siblings, 3 replies; 6+ messages in thread
From: zhouchuangao @ 2021-07-09  5:05 UTC (permalink / raw)
  To: Ingo Molnar, Peter Zijlstra, Juri Lelli, Vincent Guittot,
	Dietmar Eggemann, Steven Rostedt, Ben Segall, Mel Gorman,
	Daniel Bristot de Oliveira, linux-kernel
  Cc: zhouchuangao

Sometimes we need to trigger /proc/sysrq-trigger to view the information
of the D state process in the system.
e.g:
echo w > /proc/sysrq-trigger

Here we print the scheduling time of the process, which is convenient
for us to judge the state of the system and for debugging.

Signed-off-by: zhouchuangao <zhouchuangao@vivo.com>
---
 kernel/sched/core.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index cf16f8f..e03474d 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -8154,9 +8154,10 @@ void sched_show_task(struct task_struct *p)
 	if (pid_alive(p))
 		ppid = task_pid_nr(rcu_dereference(p->real_parent));
 	rcu_read_unlock();
-	pr_cont(" stack:%5lu pid:%5d ppid:%6d flags:0x%08lx\n",
+	pr_cont(" stack:%5lu pid:%5d ppid:%6d flags:0x%08lx sched:%llu\n",
 		free, task_pid_nr(p), ppid,
-		(unsigned long)task_thread_info(p)->flags);
+		(unsigned long)task_thread_info(p)->flags,
+		p->sched_info.last_arrival);
 
 	print_worker_info(KERN_INFO, p);
 	print_stop_info(KERN_INFO, p);
-- 
2.7.4


^ permalink raw reply related	[flat|nested] 6+ messages in thread
* Re: [PATCH] kernel/sched/core: Print the time when the process entered the D state
  2021-07-09  5:05 [PATCH] kernel/sched/core: Print the time when the process entered the D state zhouchuangao
@ 2021-07-09  6:53   ` kernel test robot
  2021-07-09  7:48   ` kernel test robot
  2021-07-09  9:46 ` Peter Zijlstra
  2 siblings, 0 replies; 6+ messages in thread
From: kernel test robot @ 2021-07-09  6:53 UTC (permalink / raw)
  To: zhouchuangao, Ingo Molnar, Peter Zijlstra, Juri Lelli,
	Vincent Guittot, Dietmar Eggemann, Steven Rostedt, Ben Segall,
	Mel Gorman, Daniel Bristot de Oliveira, linux-kernel
  Cc: kbuild-all

[-- Attachment #1: Type: text/plain, Size: 3541 bytes --]

Hi zhouchuangao,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/sched/core]
[also build test ERROR on tip/master linux/master linus/master v5.13 next-20210709]
[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/0day-ci/linux/commits/zhouchuangao/kernel-sched-core-Print-the-time-when-the-process-entered-the-D-state/20210709-130636
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 031e3bd8986fffe31e1ddbf5264cccfe30c9abd7
config: i386-tinyconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/287f10f679a0c30c4ac57abb8a36e698619554d5
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review zhouchuangao/kernel-sched-core-Print-the-time-when-the-process-entered-the-D-state/20210709-130636
        git checkout 287f10f679a0c30c4ac57abb8a36e698619554d5
        # save the attached .config to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash kernel/sched/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   kernel/sched/core.c: In function 'ttwu_stat':
   kernel/sched/core.c:3267:13: warning: variable 'rq' set but not used [-Wunused-but-set-variable]
    3267 |  struct rq *rq;
         |             ^~
   In file included from include/linux/kernel.h:17,
                    from arch/x86/include/asm/percpu.h:27,
                    from arch/x86/include/asm/current.h:6,
                    from include/linux/sched.h:12,
                    from include/linux/kthread.h:6,
                    from include/trace/events/sched.h:8,
                    from kernel/sched/core.c:10:
   kernel/sched/core.c: In function 'sched_show_task':
>> kernel/sched/core.c:8158:16: error: 'struct sched_info' has no member named 'last_arrival'
    8158 |   p->sched_info.last_arrival);
         |                ^
   include/linux/printk.h:385:26: note: in definition of macro 'pr_cont'
     385 |  printk(KERN_CONT fmt, ##__VA_ARGS__)
         |                          ^~~~~~~~~~~


vim +8158 kernel/sched/core.c

  8134	
  8135	void sched_show_task(struct task_struct *p)
  8136	{
  8137		unsigned long free = 0;
  8138		int ppid;
  8139	
  8140		if (!try_get_task_stack(p))
  8141			return;
  8142	
  8143		pr_info("task:%-15.15s state:%c", p->comm, task_state_to_char(p));
  8144	
  8145		if (task_is_running(p))
  8146			pr_cont("  running task    ");
  8147	#ifdef CONFIG_DEBUG_STACK_USAGE
  8148		free = stack_not_used(p);
  8149	#endif
  8150		ppid = 0;
  8151		rcu_read_lock();
  8152		if (pid_alive(p))
  8153			ppid = task_pid_nr(rcu_dereference(p->real_parent));
  8154		rcu_read_unlock();
  8155		pr_cont(" stack:%5lu pid:%5d ppid:%6d flags:0x%08lx sched:%llu\n",
  8156			free, task_pid_nr(p), ppid,
  8157			(unsigned long)task_thread_info(p)->flags,
> 8158			p->sched_info.last_arrival);
  8159	
  8160		print_worker_info(KERN_INFO, p);
  8161		print_stop_info(KERN_INFO, p);
  8162		show_stack(p, NULL, KERN_INFO);
  8163		put_task_stack(p);
  8164	}
  8165	EXPORT_SYMBOL_GPL(sched_show_task);
  8166	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 7417 bytes --]

^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re: [PATCH] kernel/sched/core: Print the time when the process entered the D state
@ 2021-07-09  6:53   ` kernel test robot
  0 siblings, 0 replies; 6+ messages in thread
From: kernel test robot @ 2021-07-09  6:53 UTC (permalink / raw)
  To: kbuild-all

[-- Attachment #1: Type: text/plain, Size: 3630 bytes --]

Hi zhouchuangao,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/sched/core]
[also build test ERROR on tip/master linux/master linus/master v5.13 next-20210709]
[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/0day-ci/linux/commits/zhouchuangao/kernel-sched-core-Print-the-time-when-the-process-entered-the-D-state/20210709-130636
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 031e3bd8986fffe31e1ddbf5264cccfe30c9abd7
config: i386-tinyconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/287f10f679a0c30c4ac57abb8a36e698619554d5
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review zhouchuangao/kernel-sched-core-Print-the-time-when-the-process-entered-the-D-state/20210709-130636
        git checkout 287f10f679a0c30c4ac57abb8a36e698619554d5
        # save the attached .config to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash kernel/sched/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   kernel/sched/core.c: In function 'ttwu_stat':
   kernel/sched/core.c:3267:13: warning: variable 'rq' set but not used [-Wunused-but-set-variable]
    3267 |  struct rq *rq;
         |             ^~
   In file included from include/linux/kernel.h:17,
                    from arch/x86/include/asm/percpu.h:27,
                    from arch/x86/include/asm/current.h:6,
                    from include/linux/sched.h:12,
                    from include/linux/kthread.h:6,
                    from include/trace/events/sched.h:8,
                    from kernel/sched/core.c:10:
   kernel/sched/core.c: In function 'sched_show_task':
>> kernel/sched/core.c:8158:16: error: 'struct sched_info' has no member named 'last_arrival'
    8158 |   p->sched_info.last_arrival);
         |                ^
   include/linux/printk.h:385:26: note: in definition of macro 'pr_cont'
     385 |  printk(KERN_CONT fmt, ##__VA_ARGS__)
         |                          ^~~~~~~~~~~


vim +8158 kernel/sched/core.c

  8134	
  8135	void sched_show_task(struct task_struct *p)
  8136	{
  8137		unsigned long free = 0;
  8138		int ppid;
  8139	
  8140		if (!try_get_task_stack(p))
  8141			return;
  8142	
  8143		pr_info("task:%-15.15s state:%c", p->comm, task_state_to_char(p));
  8144	
  8145		if (task_is_running(p))
  8146			pr_cont("  running task    ");
  8147	#ifdef CONFIG_DEBUG_STACK_USAGE
  8148		free = stack_not_used(p);
  8149	#endif
  8150		ppid = 0;
  8151		rcu_read_lock();
  8152		if (pid_alive(p))
  8153			ppid = task_pid_nr(rcu_dereference(p->real_parent));
  8154		rcu_read_unlock();
  8155		pr_cont(" stack:%5lu pid:%5d ppid:%6d flags:0x%08lx sched:%llu\n",
  8156			free, task_pid_nr(p), ppid,
  8157			(unsigned long)task_thread_info(p)->flags,
> 8158			p->sched_info.last_arrival);
  8159	
  8160		print_worker_info(KERN_INFO, p);
  8161		print_stop_info(KERN_INFO, p);
  8162		show_stack(p, NULL, KERN_INFO);
  8163		put_task_stack(p);
  8164	}
  8165	EXPORT_SYMBOL_GPL(sched_show_task);
  8166	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 7417 bytes --]

^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re: [PATCH] kernel/sched/core: Print the time when the process entered the D state
  2021-07-09  5:05 [PATCH] kernel/sched/core: Print the time when the process entered the D state zhouchuangao
@ 2021-07-09  7:48   ` kernel test robot
  2021-07-09  7:48   ` kernel test robot
  2021-07-09  9:46 ` Peter Zijlstra
  2 siblings, 0 replies; 6+ messages in thread
From: kernel test robot @ 2021-07-09  7:48 UTC (permalink / raw)
  To: zhouchuangao, Ingo Molnar, Peter Zijlstra, Juri Lelli,
	Vincent Guittot, Dietmar Eggemann, Steven Rostedt, Ben Segall,
	Mel Gorman, Daniel Bristot de Oliveira, linux-kernel
  Cc: clang-built-linux, kbuild-all

[-- Attachment #1: Type: text/plain, Size: 4199 bytes --]

Hi zhouchuangao,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/sched/core]
[also build test ERROR on tip/master linux/master linus/master v5.13 next-20210709]
[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/0day-ci/linux/commits/zhouchuangao/kernel-sched-core-Print-the-time-when-the-process-entered-the-D-state/20210709-130636
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 031e3bd8986fffe31e1ddbf5264cccfe30c9abd7
config: riscv-randconfig-r022-20210709 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8d69635ed9ecf36fd0ca85906bfde17949671cbe)
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://github.com/0day-ci/linux/commit/287f10f679a0c30c4ac57abb8a36e698619554d5
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review zhouchuangao/kernel-sched-core-Print-the-time-when-the-process-entered-the-D-state/20210709-130636
        git checkout 287f10f679a0c30c4ac57abb8a36e698619554d5
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=riscv SHELL=/bin/bash kernel/sched/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   kernel/sched/core.c:3201:6: warning: no previous prototype for function 'sched_set_stop_task' [-Wmissing-prototypes]
   void sched_set_stop_task(int cpu, struct task_struct *stop)
        ^
   kernel/sched/core.c:3201:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void sched_set_stop_task(int cpu, struct task_struct *stop)
   ^
   static 
   kernel/sched/core.c:6049:35: warning: no previous prototype for function 'schedule_user' [-Wmissing-prototypes]
   asmlinkage __visible void __sched schedule_user(void)
                                     ^
   kernel/sched/core.c:6049:22: note: declare 'static' if the function is not intended to be used outside of this translation unit
   asmlinkage __visible void __sched schedule_user(void)
                        ^
                        static 
>> kernel/sched/core.c:8158:17: error: no member named 'last_arrival' in 'struct sched_info'
                   p->sched_info.last_arrival);
                   ~~~~~~~~~~~~~ ^
   include/linux/printk.h:385:26: note: expanded from macro 'pr_cont'
           printk(KERN_CONT fmt, ##__VA_ARGS__)
                                   ^~~~~~~~~~~
   2 warnings and 1 error generated.


vim +8158 kernel/sched/core.c

  8134	
  8135	void sched_show_task(struct task_struct *p)
  8136	{
  8137		unsigned long free = 0;
  8138		int ppid;
  8139	
  8140		if (!try_get_task_stack(p))
  8141			return;
  8142	
  8143		pr_info("task:%-15.15s state:%c", p->comm, task_state_to_char(p));
  8144	
  8145		if (task_is_running(p))
  8146			pr_cont("  running task    ");
  8147	#ifdef CONFIG_DEBUG_STACK_USAGE
  8148		free = stack_not_used(p);
  8149	#endif
  8150		ppid = 0;
  8151		rcu_read_lock();
  8152		if (pid_alive(p))
  8153			ppid = task_pid_nr(rcu_dereference(p->real_parent));
  8154		rcu_read_unlock();
  8155		pr_cont(" stack:%5lu pid:%5d ppid:%6d flags:0x%08lx sched:%llu\n",
  8156			free, task_pid_nr(p), ppid,
  8157			(unsigned long)task_thread_info(p)->flags,
> 8158			p->sched_info.last_arrival);
  8159	
  8160		print_worker_info(KERN_INFO, p);
  8161		print_stop_info(KERN_INFO, p);
  8162		show_stack(p, NULL, KERN_INFO);
  8163		put_task_stack(p);
  8164	}
  8165	EXPORT_SYMBOL_GPL(sched_show_task);
  8166	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 35804 bytes --]

^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re: [PATCH] kernel/sched/core: Print the time when the process entered the D state
@ 2021-07-09  7:48   ` kernel test robot
  0 siblings, 0 replies; 6+ messages in thread
From: kernel test robot @ 2021-07-09  7:48 UTC (permalink / raw)
  To: kbuild-all

[-- Attachment #1: Type: text/plain, Size: 4295 bytes --]

Hi zhouchuangao,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on tip/sched/core]
[also build test ERROR on tip/master linux/master linus/master v5.13 next-20210709]
[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/0day-ci/linux/commits/zhouchuangao/kernel-sched-core-Print-the-time-when-the-process-entered-the-D-state/20210709-130636
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 031e3bd8986fffe31e1ddbf5264cccfe30c9abd7
config: riscv-randconfig-r022-20210709 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8d69635ed9ecf36fd0ca85906bfde17949671cbe)
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://github.com/0day-ci/linux/commit/287f10f679a0c30c4ac57abb8a36e698619554d5
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review zhouchuangao/kernel-sched-core-Print-the-time-when-the-process-entered-the-D-state/20210709-130636
        git checkout 287f10f679a0c30c4ac57abb8a36e698619554d5
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=riscv SHELL=/bin/bash kernel/sched/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   kernel/sched/core.c:3201:6: warning: no previous prototype for function 'sched_set_stop_task' [-Wmissing-prototypes]
   void sched_set_stop_task(int cpu, struct task_struct *stop)
        ^
   kernel/sched/core.c:3201:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void sched_set_stop_task(int cpu, struct task_struct *stop)
   ^
   static 
   kernel/sched/core.c:6049:35: warning: no previous prototype for function 'schedule_user' [-Wmissing-prototypes]
   asmlinkage __visible void __sched schedule_user(void)
                                     ^
   kernel/sched/core.c:6049:22: note: declare 'static' if the function is not intended to be used outside of this translation unit
   asmlinkage __visible void __sched schedule_user(void)
                        ^
                        static 
>> kernel/sched/core.c:8158:17: error: no member named 'last_arrival' in 'struct sched_info'
                   p->sched_info.last_arrival);
                   ~~~~~~~~~~~~~ ^
   include/linux/printk.h:385:26: note: expanded from macro 'pr_cont'
           printk(KERN_CONT fmt, ##__VA_ARGS__)
                                   ^~~~~~~~~~~
   2 warnings and 1 error generated.


vim +8158 kernel/sched/core.c

  8134	
  8135	void sched_show_task(struct task_struct *p)
  8136	{
  8137		unsigned long free = 0;
  8138		int ppid;
  8139	
  8140		if (!try_get_task_stack(p))
  8141			return;
  8142	
  8143		pr_info("task:%-15.15s state:%c", p->comm, task_state_to_char(p));
  8144	
  8145		if (task_is_running(p))
  8146			pr_cont("  running task    ");
  8147	#ifdef CONFIG_DEBUG_STACK_USAGE
  8148		free = stack_not_used(p);
  8149	#endif
  8150		ppid = 0;
  8151		rcu_read_lock();
  8152		if (pid_alive(p))
  8153			ppid = task_pid_nr(rcu_dereference(p->real_parent));
  8154		rcu_read_unlock();
  8155		pr_cont(" stack:%5lu pid:%5d ppid:%6d flags:0x%08lx sched:%llu\n",
  8156			free, task_pid_nr(p), ppid,
  8157			(unsigned long)task_thread_info(p)->flags,
> 8158			p->sched_info.last_arrival);
  8159	
  8160		print_worker_info(KERN_INFO, p);
  8161		print_stop_info(KERN_INFO, p);
  8162		show_stack(p, NULL, KERN_INFO);
  8163		put_task_stack(p);
  8164	}
  8165	EXPORT_SYMBOL_GPL(sched_show_task);
  8166	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 35804 bytes --]

^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re: [PATCH] kernel/sched/core: Print the time when the process entered the D state
  2021-07-09  5:05 [PATCH] kernel/sched/core: Print the time when the process entered the D state zhouchuangao
  2021-07-09  6:53   ` kernel test robot
  2021-07-09  7:48   ` kernel test robot
@ 2021-07-09  9:46 ` Peter Zijlstra
  2 siblings, 0 replies; 6+ messages in thread
From: Peter Zijlstra @ 2021-07-09  9:46 UTC (permalink / raw)
  To: zhouchuangao
  Cc: Ingo Molnar, Juri Lelli, Vincent Guittot, Dietmar Eggemann,
	Steven Rostedt, Ben Segall, Mel Gorman,
	Daniel Bristot de Oliveira, linux-kernel

On Thu, Jul 08, 2021 at 10:05:59PM -0700, zhouchuangao wrote:
> Sometimes we need to trigger /proc/sysrq-trigger to view the information
> of the D state process in the system.
> e.g:
> echo w > /proc/sysrq-trigger
> 
> Here we print the scheduling time of the process, which is convenient
> for us to judge the state of the system and for debugging.
> 
> Signed-off-by: zhouchuangao <zhouchuangao@vivo.com>
> ---
>  kernel/sched/core.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> index cf16f8f..e03474d 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -8154,9 +8154,10 @@ void sched_show_task(struct task_struct *p)
>  	if (pid_alive(p))
>  		ppid = task_pid_nr(rcu_dereference(p->real_parent));
>  	rcu_read_unlock();
> -	pr_cont(" stack:%5lu pid:%5d ppid:%6d flags:0x%08lx\n",
> +	pr_cont(" stack:%5lu pid:%5d ppid:%6d flags:0x%08lx sched:%llu\n",
>  		free, task_pid_nr(p), ppid,
> -		(unsigned long)task_thread_info(p)->flags);
> +		(unsigned long)task_thread_info(p)->flags,
> +		p->sched_info.last_arrival);

How's that not a compile fail for SCHED_INFO=n ?

^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2021-07-09 10:07 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-09  5:05 [PATCH] kernel/sched/core: Print the time when the process entered the D state zhouchuangao
2021-07-09  6:53 ` kernel test robot
2021-07-09  6:53   ` kernel test robot
2021-07-09  7:48 ` kernel test robot
2021-07-09  7:48   ` kernel test robot
2021-07-09  9:46 ` Peter Zijlstra

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.