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contrib/plugins/hotblocks: fix 32-bit build

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Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241217224306.2900490-8-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250116160306.1709518-18-alex.bennee@linaro.org>
This commit is contained in:
Pierrick Bouvier 2025-01-16 16:02:46 +00:00 • committed by Alex Bennée
parent aa47f448b5
commit 2fb2aa0bb0
1 changed files with 24 additions and 5 deletions
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29
contrib/plugins/hotblocks.c
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@ -29,7 +29,7 @@ static guint64 limit = 20;
*
* The internals of the TCG are not exposed to plugins so we can only
* get the starting PC for each block. We cheat this slightly by
* xor'ing the number of instructions to the hash to help
* checking the number of instructions as well to help
* differentiate.
*/
typedef struct {
@ -50,6 +50,20 @@ static gint cmp_exec_count(gconstpointer a, gconstpointer b)
return count_a > count_b ? -1 : 1;
}
static guint exec_count_hash(gconstpointer v)
{
const ExecCount *e = v;
return e->start_addr ^ e->insns;
}
static gboolean exec_count_equal(gconstpointer v1, gconstpointer v2)
{
const ExecCount *ea = v1;
const ExecCount *eb = v2;
return (ea->start_addr == eb->start_addr) &&
(ea->insns == eb->insns);
}
static void exec_count_free(gpointer key, gpointer value, gpointer user_data)
{
ExecCount *cnt = value;
@ -91,7 +105,7 @@ static void plugin_exit(qemu_plugin_id_t id, void *p)
static void plugin_init(void)
{
hotblocks = g_hash_table_new(NULL, g_direct_equal);
hotblocks = g_hash_table_new(exec_count_hash, exec_count_equal);
}
static void vcpu_tb_exec(unsigned int cpu_index, void *udata)
@ -111,10 +125,15 @@ static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
ExecCount *cnt;
uint64_t pc = qemu_plugin_tb_vaddr(tb);
size_t insns = qemu_plugin_tb_n_insns(tb);
uint64_t hash = pc ^ insns;
g_mutex_lock(&lock);
cnt = (ExecCount *) g_hash_table_lookup(hotblocks, (gconstpointer) hash);
{
ExecCount e;
e.start_addr = pc;
e.insns = insns;
cnt = (ExecCount *) g_hash_table_lookup(hotblocks, &e);
}
if (cnt) {
cnt->trans_count++;
} else {
@ -123,7 +142,7 @@ static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
cnt->trans_count = 1;
cnt->insns = insns;
cnt->exec_count = qemu_plugin_scoreboard_new(sizeof(uint64_t));
g_hash_table_insert(hotblocks, (gpointer) hash, (gpointer) cnt);
g_hash_table_insert(hotblocks, cnt, cnt);
}
g_mutex_unlock(&lock);