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| author | Libing Zhou <libing.zhou@nokia-sbell.com> | 2020-08-14 11:02:36 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-08-14 12:36:18 +0200 |
| commit | cc172ff301d8079e941a6eb31758951a6d764084 (patch) | |
| tree | a252cef5b659263862cee4173bd5b118e7b5e128 /kernel | |
| parent | a1bd06853ee478d37fae9435c5521e301de94c67 (diff) | |
| download | linux-cc172ff301d8079e941a6eb31758951a6d764084.tar.bz2 | |
sched/debug: Fix the alignment of the show-state debug output
Current sysrq(t) output task fields name are not aligned with
actual task fields value, e.g.:
kernel: sysrq: Show State
kernel: task PC stack pid father
kernel: systemd S12456 1 0 0x00000000
kernel: Call Trace:
kernel: ? __schedule+0x240/0x740
To make it more readable, print fields name together with task fields
value in the same line, with fixed width:
kernel: sysrq: Show State
kernel: task:systemd state:S stack:12920 pid: 1 ppid: 0 flags:0x00000000
kernel: Call Trace:
kernel: __schedule+0x282/0x620
Signed-off-by: Libing Zhou <libing.zhou@nokia-sbell.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200814030236.37835-1-libing.zhou@nokia-sbell.com
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/sched/core.c | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 4a0e7b449b88..09fd62568ba9 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6387,10 +6387,10 @@ void sched_show_task(struct task_struct *p) if (!try_get_task_stack(p)) return; - printk(KERN_INFO "%-15.15s %c", p->comm, task_state_to_char(p)); + pr_info("task:%-15.15s state:%c", p->comm, task_state_to_char(p)); if (p->state == TASK_RUNNING) - printk(KERN_CONT " running task "); + pr_cont(" running task "); #ifdef CONFIG_DEBUG_STACK_USAGE free = stack_not_used(p); #endif @@ -6399,8 +6399,8 @@ void sched_show_task(struct task_struct *p) if (pid_alive(p)) ppid = task_pid_nr(rcu_dereference(p->real_parent)); rcu_read_unlock(); - printk(KERN_CONT "%5lu %5d %6d 0x%08lx\n", free, - task_pid_nr(p), ppid, + pr_cont(" stack:%5lu pid:%5d ppid:%6d flags:0x%08lx\n", + free, task_pid_nr(p), ppid, (unsigned long)task_thread_info(p)->flags); print_worker_info(KERN_INFO, p); @@ -6435,13 +6435,6 @@ void show_state_filter(unsigned long state_filter) { struct task_struct *g, *p; -#if BITS_PER_LONG == 32 - printk(KERN_INFO - " task PC stack pid father\n"); -#else - printk(KERN_INFO - " task PC stack pid father\n"); -#endif rcu_read_lock(); for_each_process_thread(g, p) { /* |