tcg: Bake tb_destroy() into tcg_region_tree
The function is called only at tcg_gen_code() when duplicated TBs are translated by different threads, and when the tcg_region_tree is reset. Bake it into the underlying GTree as its value destroy function to unite these situations. Also remove tcg_region_tree_traverse() which now becomes useless. Signed-off-by: Liren Wei <lrwei@bupt.edu.cn> Message-Id: <8dc352f08d038c4e7a1f5f56962398cdc700c3aa.1625404483.git.lrwei@bupt.edu.cn> [rth: Name the new tb_tc_cmp parameter correctly.] Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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@ -378,11 +378,6 @@ static int cpu_restore_state_from_tb(CPUState *cpu, TranslationBlock *tb,
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return 0;
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}
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void tb_destroy(TranslationBlock *tb)
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{
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qemu_spin_destroy(&tb->jmp_lock);
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}
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bool cpu_restore_state(CPUState *cpu, uintptr_t host_pc, bool will_exit)
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{
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/*
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@ -1681,7 +1676,6 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
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orig_aligned -= ROUND_UP(sizeof(*tb), qemu_icache_linesize);
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qatomic_set(&tcg_ctx->code_gen_ptr, (void *)orig_aligned);
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tb_destroy(tb);
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tcg_tb_remove(tb);
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return existing_tb;
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}
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@ -808,7 +808,6 @@ void *tcg_malloc_internal(TCGContext *s, int size);
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void tcg_pool_reset(TCGContext *s);
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TranslationBlock *tcg_tb_alloc(TCGContext *s);
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void tb_destroy(TranslationBlock *tb);
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void tcg_region_reset_all(void);
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size_t tcg_code_size(void);
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19
tcg/region.c
19
tcg/region.c
@ -112,7 +112,7 @@ static int ptr_cmp_tb_tc(const void *ptr, const struct tb_tc *s)
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return 0;
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}
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static gint tb_tc_cmp(gconstpointer ap, gconstpointer bp)
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static gint tb_tc_cmp(gconstpointer ap, gconstpointer bp, gpointer userdata)
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{
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const struct tb_tc *a = ap;
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const struct tb_tc *b = bp;
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@ -143,6 +143,12 @@ static gint tb_tc_cmp(gconstpointer ap, gconstpointer bp)
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return ptr_cmp_tb_tc(b->ptr, a);
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}
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static void tb_destroy(gpointer value)
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{
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TranslationBlock *tb = value;
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qemu_spin_destroy(&tb->jmp_lock);
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}
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static void tcg_region_trees_init(void)
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{
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size_t i;
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@ -153,7 +159,7 @@ static void tcg_region_trees_init(void)
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struct tcg_region_tree *rt = region_trees + i * tree_size;
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qemu_mutex_init(&rt->lock);
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rt->tree = g_tree_new(tb_tc_cmp);
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rt->tree = g_tree_new_full(tb_tc_cmp, NULL, NULL, tb_destroy);
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}
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}
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@ -277,14 +283,6 @@ size_t tcg_nb_tbs(void)
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return nb_tbs;
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}
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static gboolean tcg_region_tree_traverse(gpointer k, gpointer v, gpointer data)
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{
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TranslationBlock *tb = v;
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tb_destroy(tb);
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return FALSE;
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}
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static void tcg_region_tree_reset_all(void)
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{
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size_t i;
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@ -293,7 +291,6 @@ static void tcg_region_tree_reset_all(void)
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for (i = 0; i < region.n; i++) {
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struct tcg_region_tree *rt = region_trees + i * tree_size;
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g_tree_foreach(rt->tree, tcg_region_tree_traverse, NULL);
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/* Increment the refcount first so that destroy acts as a reset */
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g_tree_ref(rt->tree);
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g_tree_destroy(rt->tree);
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