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From: "Alex Bennée" <alex.bennee@linaro.org>
To: qemu-devel@nongnu.org
Cc: fam@euphon.net, minyihh@uci.edu, berrange@redhat.com,
	kuhn.chenqun@huawei.com, f4bug@amsat.org, robhenry@microsoft.com,
	mahmoudabdalghany@outlook.com, aaron@os.amperecomputing.com,
	cota@braap.org, stefanha@redhat.com, crosa@redhat.com,
	pbonzini@redhat.com, ma.mandourr@gmail.com,
	"Alexandre Iooss" <erdnaxe@crans.org>,
	"Alex Bennée" <alex.bennee@linaro.org>,
	aurelien@aurel32.net
Subject: [PATCH  v1 17/28] docs/tcg-plugins: add L2 arguments to cache docs
Date: Tue, 26 Oct 2021 11:22:23 +0100	[thread overview]
Message-ID: <20211026102234.3961636-18-alex.bennee@linaro.org> (raw)
In-Reply-To: <20211026102234.3961636-1-alex.bennee@linaro.org>

From: Mahmoud Mandour <ma.mandourr@gmail.com>

cache plugin now allows optional L2 per-core cache emulation that can be
configured through plugin arguments, this commit adds this functionality
to the docs.

While I'm at it, I editted the bullet point for cache plugin to say:
    contrib/plugins/cache.c
instead of
    contrib/plugins/cache
to match other plugins.

Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210810134844.166490-6-ma.mandourr@gmail.com>
---
 docs/devel/tcg-plugins.rst | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/docs/devel/tcg-plugins.rst b/docs/devel/tcg-plugins.rst
index 842ae01a4c..59a7d838be 100644
--- a/docs/devel/tcg-plugins.rst
+++ b/docs/devel/tcg-plugins.rst
@@ -361,8 +361,9 @@ which will output an execution trace following this structure::
 
 - contrib/plugins/cache.c
 
-Cache modelling plugin that measures the performance of a given cache
-configuration when a given working set is run::
+Cache modelling plugin that measures the performance of a given L1 cache
+configuration, and optionally a unified L2 per-core cache when a given working
+set is run::
 
     qemu-x86_64 -plugin ./contrib/plugins/libcache.so \
       -d plugin -D cache.log ./tests/tcg/x86_64-linux-user/float_convs
@@ -420,3 +421,18 @@ The plugin has a number of arguments, all of them are optional:
   Sets the number of cores for which we maintain separate icache and dcache.
   (default: for linux-user, N = 1, for full system emulation: N = cores
   available to guest)
+
+  * l2=on
+
+  Simulates a unified L2 cache (stores blocks for both instructions and data)
+  using the default L2 configuration (cache size = 2MB, associativity = 16-way,
+  block size = 64B).
+
+  * l2cachesize=N
+  * l2blksize=B
+  * l2assoc=A
+
+  L2 cache configuration arguments. They specify the cache size, block size, and
+  associativity of the L2 cache, respectively. Setting any of the L2
+  configuration arguments implies ``l2=on``.
+  (default: N = 2097152 (2MB), B = 64, A = 16)
-- 
2.30.2



  parent reply	other threads:[~2021-10-26 10:46 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-26 10:22 [PATCH v1 00/28] testing, plugins and gdbstub for 6.2 Alex Bennée
2021-10-26 10:22 ` [PATCH v1 01/28] tests/docker: Use apt build-dep in debian10 Alex Bennée
2021-10-26 10:22 ` [PATCH v1 02/28] tests/docker: Simplify debian-all-test-cross Alex Bennée
2021-10-26 10:22 ` [PATCH v1 03/28] tests/docker: Update debian-hexagon-cross to a newer toolchain Alex Bennée
2021-10-26 14:58   ` Philippe Mathieu-Daudé
2021-10-26 14:59     ` Philippe Mathieu-Daudé
2021-10-26 10:22 ` [PATCH v1 04/28] gitlab-ci: Remove special casing for hexagon testing Alex Bennée
2021-10-26 15:00   ` Philippe Mathieu-Daudé
2021-10-26 20:46   ` Willian Rampazzo
2021-10-26 10:22 ` [PATCH v1 05/28] tests/docker: Add debian-nios2-cross image Alex Bennée
2021-10-26 15:01   ` Philippe Mathieu-Daudé
2021-10-26 20:49   ` Willian Rampazzo
2021-10-26 10:22 ` [PATCH v1 06/28] tests/docker: Add debian-microblaze-cross image Alex Bennée
2021-10-26 15:02   ` Philippe Mathieu-Daudé
2021-10-26 20:50   ` Willian Rampazzo
2021-10-26 10:22 ` [PATCH v1 07/28] tests/tcg: Enable container_cross_cc for microblaze Alex Bennée
2021-10-26 15:03   ` Philippe Mathieu-Daudé
2021-10-26 10:22 ` [PATCH v1 08/28] tests/tcg: Fix some targets default cross compiler path Alex Bennée
2021-10-26 10:41   ` Philippe Mathieu-Daudé
2021-10-26 10:22 ` [PATCH v1 09/28] tests/docker: split PARTIAL into PARTIAL and VIRTUAL images Alex Bennée
2021-10-26 20:01   ` Richard Henderson
2021-10-26 20:52   ` Willian Rampazzo
2021-10-26 10:22 ` [PATCH v1 10/28] tests/docker: allow non-unique userid Alex Bennée
2021-10-26 20:42   ` Richard Henderson
2021-11-01 15:10     ` Alex Bennée
2021-10-26 10:22 ` [PATCH v1 11/28] tests/tcg: enable debian-nios2-cross for test building Alex Bennée
2021-10-26 15:04   ` Philippe Mathieu-Daudé
2021-10-26 20:02   ` Richard Henderson
2021-10-26 10:22 ` [PATCH v1 12/28] ebpf: really include it only in system emulators Alex Bennée
2021-10-26 20:03   ` Richard Henderson
2021-10-27 16:10   ` Warner Losh
2021-10-26 10:22 ` [PATCH v1 13/28] plugins/cache: freed heap-allocated mutexes Alex Bennée
2021-10-26 15:06   ` Philippe Mathieu-Daudé
2021-10-26 10:22 ` [PATCH v1 14/28] plugins/cache: implement unified L2 cache emulation Alex Bennée
2021-10-26 10:22 ` [PATCH v1 15/28] plugins/cache: split command line arguments into name and value Alex Bennée
2021-10-26 10:22 ` [PATCH v1 16/28] plugins/cache: make L2 emulation optional through args Alex Bennée
2021-10-26 10:22 ` Alex Bennée [this message]
2021-10-26 10:22 ` [PATCH v1 18/28] chardev: don't exit() straight away on C-a x Alex Bennée
2021-10-26 10:22 ` [PATCH v1 19/28] tests/plugins: extend the insn plugin to track opcode sizes Alex Bennée
2021-10-26 10:22 ` [PATCH v1 20/28] plugins: try and make plugin_insn_append more ergonomic Alex Bennée
2021-10-26 20:09   ` Richard Henderson
2021-10-26 10:22 ` [PATCH v1 21/28] docs: remove references to TCG tracing Alex Bennée
2021-10-26 20:10   ` Richard Henderson
2021-10-26 10:22 ` [PATCH v1 22/28] tracing: remove TCG memory access tracing Alex Bennée
2021-10-26 20:15   ` Richard Henderson
2021-10-26 10:22 ` [PATCH v1 23/28] tracing: remove the trace-tcg includes from the build Alex Bennée
2021-10-26 20:20   ` Richard Henderson
2021-10-26 10:22 ` [PATCH v1 24/28] tracing: excise the tcg related from tracetool Alex Bennée
2021-10-26 20:23   ` Richard Henderson
2021-10-26 10:22 ` [PATCH v1 25/28] plugins: add helper functions for coverage plugins Alex Bennée
2021-10-26 20:25   ` Richard Henderson
2021-10-27 16:09     ` Warner Losh
2021-10-27 18:58       ` Richard Henderson
2021-10-28 17:09         ` Warner Losh
2021-10-26 10:22 ` [PATCH v1 26/28] contrib/plugins: add a drcov plugin Alex Bennée
2021-10-26 10:22 ` [PATCH v1 27/28] tests/tcg: remove duplicate EXTRA_RUNS Alex Bennée
2021-10-26 15:11   ` Philippe Mathieu-Daudé
2021-10-26 20:27   ` Richard Henderson
2021-10-27 14:48     ` Alex Bennée
2021-10-26 10:22 ` [PATCH v1 28/28] gdbstub: Switch to the thread receiving a signal Alex Bennée
2021-10-26 20:34   ` Richard Henderson

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