Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.
Thomas Gleixner
authored
The recent conversion of the task state recording to use task_state_index() broke the sched_switch tracepoint task state output. task_state_index() returns surprisingly an index (0-7) which is then printed with __print_flags() applying bitmasks. Not really working and resulting in weird states like 'prev_state=t' instead of 'prev_state=I'. Use TASK_REPORT_MAX instead of TASK_STATE_MAX to report preemption. Build a bitmask from the return value of task_state_index() and store it in entry->prev_state, which makes __print_flags() work as expected. Signed-off-by:Thomas Gleixner <tglx@linutronix.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: stable@vger.kernel.org Fixes: efb40f58 ("sched/tracing: Fix trace_sched_switch task-state printing") Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1711221304180.1751@nanos Signed-off-by:
Ingo Molnar <mingo@kernel.org>