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| author | Pierrick Bouvier <pierrick.bouvier@linaro.org> | 2024-03-05 12:09:50 +0000 |
|---|---|---|
| committer | Alex Bennée <alex.bennee@linaro.org> | 2024-03-06 12:35:19 +0000 |
| commit | a3c2cf0b891d00ef502e9902baa9fb7fe1f8e7a3 (patch) | |
| tree | ce1f4e6b67b1259a452bb4231fbe5e0eb52752ed /plugins/plugin.h | |
| parent | b9504c9ad980b97e6888bf07c36c2be567b4c65d (diff) | |
plugins: scoreboard API
We introduce a cpu local storage, automatically managed (and extended)
by QEMU itself. Plugin allocate a scoreboard, and don't have to deal
with how many cpus are launched.
This API will be used by new inline functions but callbacks can benefit
from this as well. This way, they can operate without a global lock for
simple operations.
At any point during execution, any scoreboard will be dimensioned with
at least qemu_plugin_num_vcpus entries.
New functions:
- qemu_plugin_scoreboard_find
- qemu_plugin_scoreboard_free
- qemu_plugin_scoreboard_new
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20240304130036.124418-2-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240305121005.3528075-15-alex.bennee@linaro.org>
Diffstat (limited to 'plugins/plugin.h')
| -rw-r--r-- | plugins/plugin.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/plugins/plugin.h b/plugins/plugin.h index 00b3509f70..043c740067 100644 --- a/plugins/plugin.h +++ b/plugins/plugin.h @@ -31,6 +31,8 @@ struct qemu_plugin_state { * but with the HT we avoid adding a field to CPUState. */ GHashTable *cpu_ht; + QLIST_HEAD(, qemu_plugin_scoreboard) scoreboards; + size_t scoreboard_alloc_size; DECLARE_BITMAP(mask, QEMU_PLUGIN_EV_MAX); /* * @lock protects the struct as well as ctx->uninstalling. @@ -101,4 +103,8 @@ void exec_inline_op(struct qemu_plugin_dyn_cb *cb); int plugin_num_vcpus(void); +struct qemu_plugin_scoreboard *plugin_scoreboard_new(size_t element_size); + +void plugin_scoreboard_free(struct qemu_plugin_scoreboard *score); + #endif /* PLUGIN_H */ |