linux-kernel - [PATCH 2/2 V3] Documentation: Coccinelle: Modify parallelisation information in docs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Wed, 7 Oct 2020 13:52:53 +0530
From:   Sumera Priyadarsini <sylphrenadin@...il.com>
To:     Julia.Lawall@...6.fr
Cc:     corbet@....net, Gilles.Muller@...6.fr, nicolas.palix@...g.fr,
        michal.lkml@...kovi.net, cocci@...teme.lip6.fr,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org
Subject: [PATCH 2/2 V3] Documentation: Coccinelle: Modify parallelisation
 information in docs

This patchset modifies coccicheck to use at most one thread per core by
default in machines with more than 4 hyperthreads for optimal performance.
Modify documentation in coccinelle.rst to reflect the same.

Signed-off-by: Sumera Priyadarsini <sylphrenadin@...il.com>
---
Changes in V2:
	Update scripts/coccicheck to use all available threads
	in machines with upto 4 hyperthreads.
---
 Documentation/dev-tools/coccinelle.rst | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Documentation/dev-tools/coccinelle.rst b/Documentation/dev-tools/coccinelle.rst
index 74c5e6aeeff5..6fdc462689d5 100644
--- a/Documentation/dev-tools/coccinelle.rst
+++ b/Documentation/dev-tools/coccinelle.rst
@@ -130,8 +130,9 @@ To enable verbose messages set the V= variable, for example::
 Coccinelle parallelization
 --------------------------
 
-By default, coccicheck tries to run as parallel as possible. To change
-the parallelism, set the J= variable. For example, to run across 4 CPUs::
+By default, coccicheck uses at most 1 thread per core in a machine with more
+than 4 hyperthreads. In a machine with upto 4 threads, all threads are used.
+To change the parallelism, set the J= variable. For example, to run across 4 CPUs::
 
    make coccicheck MODE=report J=4
 
-- 
2.25.1