From: Ingo Molnar Date: Thu, 26 Apr 2007 03:50:03 +0000 (-0700) Subject: make SysRq-T show all tasks again X-Git-Tag: accepted/tizen/common/20141203.182822~32106 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=39bc89fd4019b164002adaacef92c4140e37955a;p=platform%2Fkernel%2Flinux-arm64.git make SysRq-T show all tasks again show_state() (SysRq-T) developed the buggy habbit of not showing TASK_RUNNING tasks. This was due to the mistaken belief that state_filter == -1 would be a pass-through filter - while in reality it did not let TASK_RUNNING == 0 p->state values through. Fix this by restoring the original '!state_filter means all tasks' special-case i had in the original version. Test-built and test-booted on i686, SysRq-T now works as intended. Signed-off-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/include/linux/sched.h b/include/linux/sched.h index 49fe299..a170758 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -196,13 +196,13 @@ extern void init_idle(struct task_struct *idle, int cpu); extern cpumask_t nohz_cpu_mask; /* - * Only dump TASK_* tasks. (-1 for all tasks) + * Only dump TASK_* tasks. (0 for all tasks) */ extern void show_state_filter(unsigned long state_filter); static inline void show_state(void) { - show_state_filter(-1); + show_state_filter(0); } extern void show_regs(struct pt_regs *); diff --git a/kernel/sched.c b/kernel/sched.c index b9a6837..960d7c5 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -4746,7 +4746,7 @@ void show_state_filter(unsigned long state_filter) * console might take alot of time: */ touch_nmi_watchdog(); - if (p->state & state_filter) + if (!state_filter || (p->state & state_filter)) show_task(p); } while_each_thread(g, p);