[Crash-utility] [PATCH v2 23/25] modify print_task_header() to indicate idle task on offline cpu

Since the offline cpu is halt, the active task(idle task) on offline cpu is not running actually. Add "<OFFLINE>" at the end of task header to indicate such tasks. The offline cpu is #2, and the output is changed from: <cut> crash> ps -l ... [ 0] [RU] PID: 0 TASK: ffffffff818d5440 CPU: 0 COMMAND: "swapper/0" [ 0] [RU] PID: 0 TASK: ffff88003dad4fa0 CPU: 1 COMMAND: "swapper/1" [ 0] [RU] PID: 0 TASK: ffff88003dad5b00 CPU: 2 COMMAND: "swapper/2" [ 0] [RU] PID: 0 TASK: ffff88003dad6660 CPU: 3 COMMAND: "swapper/3" <cut> to: <cut> crash> ps -l ... [ 0] [RU] PID: 0 TASK: ffffffff818d5440 CPU: 0 COMMAND: "swapper/0" [ 0] [RU] PID: 0 TASK: ffff88003dad4fa0 CPU: 1 COMMAND: "swapper/1" [ 0] [RU] PID: 0 TASK: ffff88003dad5b00 CPU: 2 COMMAND: "swapper/2" <OFFLINE> [ 0] [RU] PID: 0 TASK: ffff88003dad6660 CPU: 3 COMMAND: "swapper/3" <cut> Signed-off-by: Qiao Nuohan <qiaonuohan(a)cn.fujitsu.com&gt; --- task.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/task.c b/task.c index 27c3aa4..2c8c4e4 100755 --- a/task.c +++ b/task.c @@ -6609,10 +6609,16 @@ print_task_header(FILE *out, struct task_context *tc, int newline) char buf[BUFSIZE]; char buf1[BUFSIZE]; - fprintf(out, "%sPID: %-5ld TASK: %s CPU: %-2s COMMAND: \"%s\"\n", + int task_offline; + + task_offline = is_task_active(tc->task) && + check_offline_cpu(tc->processor); + + fprintf(out, "%sPID: %-5ld TASK: %s CPU: %-2s COMMAND: \"%s\" %s\n", newline ? "\n" : "", tc->pid, mkstring(buf1, VADDR_PRLEN, LJUST|LONG_HEX, MKSTR(tc->task)), - task_cpu(tc->processor, buf, !VERBOSE), tc->comm); + task_cpu(tc->processor, buf, !VERBOSE), tc->comm, + task_offline ? "<OFFLINE>" : ""); } /* -- 1.8.5.3