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[PATCH v1 17/28] docs/tcg-plugins: add L2 arguments to cache docs
From: |
Alex Bennée |
Subject: |
[PATCH v1 17/28] docs/tcg-plugins: add L2 arguments to cache docs |
Date: |
Tue, 26 Oct 2021 11:22:23 +0100 |
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
- Re: [PATCH v1 03/28] tests/docker: Update debian-hexagon-cross to a newer toolchain, (continued)
- [PATCH v1 12/28] ebpf: really include it only in system emulators, Alex Bennée, 2021/10/26
- [PATCH v1 09/28] tests/docker: split PARTIAL into PARTIAL and VIRTUAL images, Alex Bennée, 2021/10/26
- [PATCH v1 25/28] plugins: add helper functions for coverage plugins, Alex Bennée, 2021/10/26
- [PATCH v1 08/28] tests/tcg: Fix some targets default cross compiler path, Alex Bennée, 2021/10/26
- [PATCH v1 17/28] docs/tcg-plugins: add L2 arguments to cache docs,
Alex Bennée <=
- [PATCH v1 18/28] chardev: don't exit() straight away on C-a x, Alex Bennée, 2021/10/26
- [PATCH v1 19/28] tests/plugins: extend the insn plugin to track opcode sizes, Alex Bennée, 2021/10/26
- [PATCH v1 26/28] contrib/plugins: add a drcov plugin, Alex Bennée, 2021/10/26
- [PATCH v1 28/28] gdbstub: Switch to the thread receiving a signal, Alex Bennée, 2021/10/26
- [PATCH v1 15/28] plugins/cache: split command line arguments into name and value, Alex Bennée, 2021/10/26
- [PATCH v1 13/28] plugins/cache: freed heap-allocated mutexes, Alex Bennée, 2021/10/26
- [PATCH v1 23/28] tracing: remove the trace-tcg includes from the build, Alex Bennée, 2021/10/26