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From: Douglas Anderson <dianders@chromium.org>
To: Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Jason Wessel <jason.wessel@windriver.com>,
	Daniel Thompson <daniel.thompson@linaro.org>
Cc: kgdb-bugreport@lists.sourceforge.net,
	Douglas Anderson <dianders@chromium.org>,
	Christophe Leroy <christophe.leroy@c-s.fr>,
	linux-kernel@vger.kernel.org
Subject: [PATCH v3 0/4] kdb: Fixes for btc
Date: Wed, 25 Sep 2019 13:02:16 -0700	[thread overview]
Message-ID: <20190925200220.157670-1-dianders@chromium.org> (raw)


This series has a few kdb fixes for back tracing on CPUs.  The
previous version[1] had only one patch, but while making v3 I found a
few cleanups that made sense to break into other pieces.

As with all things kdb / kgdb, this patch set tries to inch us towards
a better state of the world but doesn't attempt to solve all known
problems.

Please enjoy.

[1] https://lore.kernel.org/r/20190731183732.178134-1-dianders@chromium.org

Changes in v3:
- Patch ("Remove unused DCPU_SSTEP definition") new for v3.
- Patch ("kdb: Remove unused "argcount" param from...") new for v3.
- Patch ("kdb: Fix "btc <cpu>" crash if the CPU...") new for v3.
- Use exception state instead of new dbg_slave_dumpstack_cpu var.
- Move horror to debug core, cleaning up control flow.
- Avoid need for timeout by only waiting for CPUs marked as slaves.

Changes in v2:
- Totally new approach; now arch agnostic.

Douglas Anderson (4):
  kgdb: Remove unused DCPU_SSTEP definition
  kdb: Remove unused "argcount" param from kdb_bt1(); make btaprompt
    bool
  kdb: Fix "btc <cpu>" crash if the CPU didn't round up
  kdb: Fix stack crawling on 'running' CPUs that aren't the master

 kernel/debug/debug_core.c | 34 ++++++++++++++
 kernel/debug/debug_core.h |  3 +-
 kernel/debug/kdb/kdb_bt.c | 94 +++++++++++++++++++--------------------
 3 files changed, 83 insertions(+), 48 deletions(-)

-- 
2.23.0.351.gc4317032e6-goog


             reply	other threads:[~2019-09-25 20:02 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-25 20:02 Douglas Anderson [this message]
2019-09-25 20:02 ` [PATCH v3 1/4] kgdb: Remove unused DCPU_SSTEP definition Douglas Anderson
2019-09-25 20:08   ` Jason Wessel
2019-09-25 20:02 ` [PATCH v3 2/4] kdb: Remove unused "argcount" param from kdb_bt1(); make btaprompt bool Douglas Anderson
2019-09-25 20:02 ` [PATCH v3 3/4] kdb: Fix "btc <cpu>" crash if the CPU didn't round up Douglas Anderson
2019-10-03 21:09   ` Will Deacon
2019-10-07 13:54   ` Daniel Thompson
2019-10-07 23:34     ` Doug Anderson
2019-10-10 15:07       ` Daniel Thompson
2019-10-10 16:38         ` Doug Anderson
2019-11-09 19:20           ` Doug Anderson
2019-09-25 20:02 ` [PATCH v3 4/4] kdb: Fix stack crawling on 'running' CPUs that aren't the master Douglas Anderson
2019-10-03 21:11 ` [PATCH v3 0/4] kdb: Fixes for btc Will Deacon
2019-10-10 16:51 ` Daniel Thompson

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