LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
* [PATCH v2 0/2] Improve preemptirq tracepoint usage
@ 2018-03-15 20:43 Joel Fernandes
  2018-03-15 20:44 ` [PATCH v2 1/2] tracing: Improve design of preemptirq tracepoints and its users Joel Fernandes
  2018-03-15 20:44 ` [PATCH v2 2/2] tracepoint: Prevent false-positive lockdep warnings Joel Fernandes
  0 siblings, 2 replies; 6+ messages in thread
From: Joel Fernandes @ 2018-03-15 20:43 UTC (permalink / raw)
  To: linux-kernel
  Cc: Joel Fernandes, Steven Rostedt, Peter Zilstra, Ingo Molnar,
	Mathieu Desnoyers, Tom Zanussi, Namhyung Kim

Hi,
These patches improve the design of preemptirq tracepoints, clean up
several of the ifdeffery and overall makes the feature configuration
cleaner and less confusing. It also uses the tracepoints infra for
the lockdep hooks for irqs on/off thus making a central point for all
users of the event (kernel/trace/trace_preemptirq.c).
Patches based on v4.16-rc5.

Changes since v1:
- Make PROVE_LOCKING depend on FTRACE since PROVE_LOCKING needs to
  register hooks in this series which needs PREEMPTIRQ_TRACEPOINTS.

Changes since RFC [1]:
- handle case where lockdep warnings occur in tracepoint code (2/2)
- protect tracepoint probe registration in lockdep init by ifdef.

Joel Fernandes (2):
  tracing: Improve design of preemptirq tracepoints and its users
  tracepoint: Prevent false-positive lockdep warnings

[1] https://patchwork.kernel.org/patch/10202163/

 include/linux/ftrace.h            |  11 +-
 include/linux/irqflags.h          |  11 +-
 include/linux/lockdep.h           |   6 +-
 include/linux/preempt.h           |   2 +-
 include/linux/tracepoint.h        |  23 +++-
 include/trace/events/preemptirq.h |  23 ++--
 init/main.c                       |   2 +-
 kernel/locking/lockdep.c          |  31 ++---
 kernel/sched/core.c               |   2 +-
 kernel/trace/Kconfig              |  19 ++-
 kernel/trace/Makefile             |   2 +-
 kernel/trace/trace_irqsoff.c      | 206 +++++++-----------------------
 kernel/trace/trace_preemptirq.c   |  70 ++++++++++
 lib/Kconfig.debug                 |   2 +-
 14 files changed, 192 insertions(+), 218 deletions(-)
 create mode 100644 kernel/trace/trace_preemptirq.c

Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zilstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Tom Zanussi <tom.zanussi@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Joel Fernandes <joelaf@google.com>

-- 
2.16.2.804.g6dcf76e118-goog

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2018-03-19  1:39 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-03-15 20:43 [PATCH v2 0/2] Improve preemptirq tracepoint usage Joel Fernandes
2018-03-15 20:44 ` [PATCH v2 1/2] tracing: Improve design of preemptirq tracepoints and its users Joel Fernandes
2018-03-17 14:49   ` [tracing] 45382b2a36: WARNING:at_kernel/locking/lockdep.c:#check_flags kernel test robot
2018-03-17 19:03   ` [PATCH v2 1/2] tracing: Improve design of preemptirq tracepoints and its users kbuild test robot
2018-03-19  1:39     ` Joel Fernandes
2018-03-15 20:44 ` [PATCH v2 2/2] tracepoint: Prevent false-positive lockdep warnings Joel Fernandes

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).