linux-dev/kernel/trace/rv/monitors/wwnr, branch masterLinux kernel development work - see feature brancheshttps://git.zx2c4.com/linux-dev/atom/kernel/trace/rv/monitors/wwnr?h=master2022-09-26T22:10:51Zrv/monitor: Add __init/__exit annotations to module init/exit funcs2022-09-26T22:10:51ZXiu Jianfengxiujianfeng@huawei.com2022-09-22T10:32:08Zurn:sha1:834168fb2ce57681dee86a405ec560f54417830c
Add missing __init/__exit annotations to module init/exit funcs.
Link: https://lkml.kernel.org/r/20220922103208.162869-1-xiujianfeng@huawei.com
Fixes: 24bce201d798 ("tools/rv: Add dot2k")
Fixes: 8812d21219b9 ("rv/monitor: Add the wip monitor skeleton created by dot2k")
Fixes: ccc319dcb450 ("rv/monitor: Add the wwnr monitor")
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
rv/monitors: add 'static' qualifier for local symbols2022-09-26T17:01:09ZZeng Hengzengheng4@huawei.com2022-08-24T03:43:56Zurn:sha1:01c44bf8337ac79f31aa090e842bf3b9dd762aca
The sparse tool complains as follows:
kernel/trace/rv/monitors/wwnr/wwnr.c:18:19:
warning: symbol 'rv_wwnr' was not declared. Should it be static?
The `rv_wwnr` symbol is not dereferenced by other extern files,
so add static qualifier for it.
So does wip module.
Link: https://lkml.kernel.org/r/20220824034357.2014202-2-zengheng4@huawei.com
Cc: <mingo@redhat.com>
Fixes: ccc319dcb450 ("rv/monitor: Add the wwnr monitor")
Fixes: 8812d21219b9 ("rv/monitor: Add the wip monitor skeleton created by dot2k")
Signed-off-by: Zeng Heng <zengheng4@huawei.com>
Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
rv/monitors: Make monitor's automata definition static2022-09-07T02:13:25ZDaniel Bristot de Oliveirabristot@kernel.org2022-08-23T15:20:29Zurn:sha1:baf2c002402702accc30dcc8f19199f303638306
Monitor's automata definition is only used locally, so make
them static for all existing monitors.
Link: https://lore.kernel.org/all/202208210332.gtHXje45-lkp@intel.com
Link: https://lore.kernel.org/all/202208210358.6HH3OrVs-lkp@intel.com
Link: https://lkml.kernel.org/r/a50e27c3738d6ef809f4201857229fed64799234.1661266564.git.bristot@kernel.org
Fixes: ccc319dcb450 ("rv/monitor: Add the wwnr monitor")
Fixes: 8812d21219b9 ("rv/monitor: Add the wip monitor skeleton created by dot2k")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
rv/monitor: Add the wwnr monitor2022-07-30T18:01:30ZDaniel Bristot de Oliveirabristot@kernel.org2022-07-29T09:38:53Zurn:sha1:ccc319dcb450d57b7befe924453d06804d83ba73
Per task wakeup while not running (wwnr) monitor.
This model is broken, the reason is that a task can be running in the
processor without being set as RUNNABLE. Think about a task about to
sleep:
1: set_current_state(TASK_UNINTERRUPTIBLE);
2: schedule();
And then imagine an IRQ happening in between the lines one and two,
waking the task up. BOOM, the wakeup will happen while the task is
running.
Q: Why do we need this model, so?
A: To test the reactors.
Link: https://lkml.kernel.org/r/473c0fc39967250fdebcff8b620311c11dccad30.1659052063.git.bristot@kernel.org
Cc: Wim Van Sebroeck <wim@linux-watchdog.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Marco Elver <elver@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: Gabriele Paoloni <gpaoloni@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: Tao Zhou <tao.zhou@linux.dev>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: linux-doc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>