Messages in this thread Patch in this message | | | From | Shirish S <> | Subject | [PATCH] sched/debug: print column titles of show_state_filter() | Date | Thu, 12 Aug 2021 19:39:34 +0530 |
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This addition in the debug output shall improve readablitly.. Its not intuitive for users that the pid printed in last column is of parent process.
Without this patch: localhost ~ # dmesg -w & localhost ~ # echo w > /proc/sysrq-trigger [22148.730225] sysrq: Show Blocked State localhost ~ #
With this patch: localhost ~ # dmesg -w & localhost ~ # echo w > /proc/sysrq-trigger [ 99.979365] sysrq: Show Blocked State --> [ 99.983471] task PC stack pid father localhost ~ #
v2: Dropped #ifdef logic v3: Sample output in commit message
Signed-off-by: Shirish S <shirish.s@amd.com> Suggested-by: Steven Rostedt <rostedt@goodmis.org> --- kernel/sched/core.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 20ffcc044134..d9c7014870d5 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -8174,6 +8174,9 @@ void show_state_filter(unsigned int state_filter) { struct task_struct *g, *p; + pr_info(" task%*s", BITS_PER_LONG == 32 ? 38 : 46, + "PC stack ppid\n"); + rcu_read_lock(); for_each_process_thread(g, p) { /* -- 2.17.1
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