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2021-09-02plugins/cache: supported multicore cache modellingMahmoud Mandour
Multicore L1 cache modelling is introduced and is supported for both full system emulation and linux-user. For full-system emulation, L1 icache and dcache are maintained for each available core, since this information is exposed to the plugin through `qemu_plugin_n_vcpus()`. For linux-user, a static number of cores is assumed (default 1 core, and can be provided as a plugin argument `cores=N`). Every memory access goes through one of these caches, this approach is taken as it's somewhat akin to what happens on real setup, where a program that dispatches more threads than the available cores, they'll thrash each other Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com> Message-Id: <20210803151301.123581-2-ma.mandourr@gmail.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2021-07-23plugins/cache: Fixed "function decl. is not a prototype" warningsMahmoud Mandour
Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20210714172151.8494-7-ma.mandourr@gmail.com> Message-Id: <20210720232703.10650-24-alex.bennee@linaro.org>
2021-07-23plugins/cache: limited the scope of a mutex lockMahmoud Mandour
It's not necessary to lock the address translation portion of the vcpu_mem_access callback. Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20210714172151.8494-3-ma.mandourr@gmail.com> Message-Id: <20210720232703.10650-23-alex.bennee@linaro.org>
2021-07-23plugins/cache: Fixed a bug with destroying FIFO metadataMahmoud Mandour
This manifests itself when associativity degree is greater than the number of sets and FIFO is used, otherwise it's also a memory leak whenever FIFO was used. Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20210714172151.8494-2-ma.mandourr@gmail.com> Message-Id: <20210720232703.10650-22-alex.bennee@linaro.org>
2021-07-14plugins/cache: Added FIFO and LRU eviction policiesMahmoud Mandour
Implemented FIFO and LRU eviction policies. Now one of the three eviction policies can be chosen as an argument. On not specifying an argument, LRU is used by default. Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20210623125458.450462-4-ma.mandourr@gmail.com> Message-Id: <20210709143005.1554-39-alex.bennee@linaro.org>
2021-07-14plugins/cache: Enable cache parameterizationMahmoud Mandour
Enabled configuring both icache and dcache parameters using plugin parameters. Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20210623125458.450462-3-ma.mandourr@gmail.com> Message-Id: <20210709143005.1554-38-alex.bennee@linaro.org>
2021-07-14plugins: Added a new cache modelling pluginMahmoud Mandour
Added a cache modelling plugin that uses a static configuration used in many of the commercial microprocessors and uses random eviction policy. The purpose of the plugin is to identify the most cache-thrashing instructions for both instruction cache and data cache. Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20210623125458.450462-2-ma.mandourr@gmail.com> Message-Id: <20210709143005.1554-37-alex.bennee@linaro.org>
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