mirrors/qemu
0
0
Fork 0
mirror of https://github.com/qemu/qemu.git synced 2024-11-24 11:23:43 +08:00
Code Issues Packages Projects Releases Wiki Activity

plugins: add qemu_plugin_num_vcpus function

Browse Source 
We now keep track of how many vcpus were started. This way, a plugin can
easily query number of any vcpus at any point of execution, which
unifies user and system mode workflows.

Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240213094009.150349-3-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240227144335.1196131-17-alex.bennee@linaro.org>
This commit is contained in:
Pierrick Bouvier 2024-02-27 14:43:22 +00:00 committed by Alex Bennée
parent 926e146eff
commit 4a448b148c
5 changed files with 19 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/qemu/qemu-plugin.h
View File

@ -645,6 +645,9 @@ QEMU_PLUGIN_API
void qemu_plugin_register_atexit_cb(qemu_plugin_id_t id,
qemu_plugin_udata_cb_t cb, void *userdata);
/* returns how many vcpus were started at this point */
int qemu_plugin_num_vcpus(void);
/**
* qemu_plugin_outs() - output string via QEMU's logging system
* @string: a string

5
plugins/api.c
View File

@ -342,6 +342,11 @@ const char *qemu_plugin_hwaddr_device_name(const struct qemu_plugin_hwaddr *h)
#endif
}
int qemu_plugin_num_vcpus(void)
{
return plugin_num_vcpus();
}
/*
* Plugin output
*/

6
plugins/core.c
View File

@ -213,6 +213,7 @@ void qemu_plugin_vcpu_init_hook(CPUState *cpu)
bool success;
qemu_rec_mutex_lock(&plugin.lock);
plugin.num_vcpus = MAX(plugin.num_vcpus, cpu->cpu_index + 1);
plugin_cpu_update__locked(&cpu->cpu_index, NULL, NULL);
success = g_hash_table_insert(plugin.cpu_ht, &cpu->cpu_index,
&cpu->cpu_index);
@ -570,3 +571,8 @@ static void __attribute__((__constructor__)) plugin_init(void)
QHT_MODE_AUTO_RESIZE);
atexit(qemu_plugin_atexit_cb);
}
int plugin_num_vcpus(void)
{
return plugin.num_vcpus;
}

4
plugins/plugin.h
View File

@ -44,6 +44,8 @@ struct qemu_plugin_state {
* the code cache is flushed.
*/
struct qht dyn_cb_arr_ht;
/* How many vcpus were started */
int num_vcpus;
};
@ -97,4 +99,6 @@ void plugin_register_vcpu_mem_cb(GArray **arr,
void exec_inline_op(struct qemu_plugin_dyn_cb *cb);
int plugin_num_vcpus(void);
#endif /* PLUGIN_H */

1
plugins/qemu-plugins.symbols
View File

@ -16,6 +16,7 @@
qemu_plugin_mem_is_sign_extended;
qemu_plugin_mem_is_store;
qemu_plugin_mem_size_shift;
qemu_plugin_num_vcpus;
qemu_plugin_outs;
qemu_plugin_path_to_binary;
qemu_plugin_register_atexit_cb;