linux-kernel - [PATCH v3 0/4] scripts: add stack{usage,delta} scripts

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Message-Id: <1440064410-13515-1-git-send-email-linux@rasmusvillemoes.dk>
Date:	Thu, 20 Aug 2015 11:53:26 +0200
From:	Rasmus Villemoes <linux@...musvillemoes.dk>
To:	Michal Marek <mmarek@...e.cz>
Cc:	linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org,
	Rasmus Villemoes <linux@...musvillemoes.dk>
Subject: [PATCH v3 0/4] scripts: add stack{usage,delta} scripts

On Wed, Aug 19 2015, Michal Marek <mmarek@...e.cz> wrote:

> Do you plan any new iterations, or is this final despite the [RFC]?
> If it's final, I will apply it.

It's final, modulo a few typos I spotted. I took the opportunity to
fix those and send with a PATCH prefix.

===

The current checkstack.pl script has a few problems, stemming from the
overly simplistic attempt at parsing objdump output with regular
expressions. Since gcc 4.6 introduced the -fstack-usage option, we can
now get the exact stack use instead of resorting to ad hoc methods.

This introduces two small scripts. One for running make with KCFLAGS
set to -fstack-usage, followed by collecting the generated .su files
in a single output file. Another for taking two such output files and
computing the changes in stack use.

2/4 and 3/4 may be too small by themselves; they can easily be
squashed into 1/4.

v2: Use KCFLAGS instead of EXTRA_CFLAGS. A few more details in commit
messages. Simpler option handling in stackusage. Removed accidental
leftover debug prints.

v3: Fix a few typos.

Rasmus Villemoes (4):
  scripts: add stackusage script
  .gitignore: add *.su pattern
  kbuild: remove *.su files generated by -fstack-usage
  scripts: add stackdelta script

 .gitignore         |  1 +
 Makefile           |  1 +
 scripts/stackdelta | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 scripts/stackusage | 33 ++++++++++++++++++++++++++++++
 4 files changed, 94 insertions(+)
 create mode 100755 scripts/stackdelta
 create mode 100755 scripts/stackusage

-- 
2.1.3

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