diff mbox series

[v3,14/28] tcg: Introduce tcg_max_ctxs

Message ID 20210502231844.1977630-15-richard.henderson@linaro.org
State Superseded
Headers show
Series tcg: Clean up code_gen_buffer allocation | expand

Commit Message

Richard Henderson May 2, 2021, 11:18 p.m. UTC 
Finish the divorce of tcg/ from hw/, and do not take
the max cpu value from MachineState; just remember what
we were passed in tcg_init.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 tcg/internal.h |  3 ++-
 tcg/region.c   |  6 +++---
 tcg/tcg.c      | 23 ++++++++++-------------
 3 files changed, 15 insertions(+), 17 deletions(-)

-- 
2.25.1

Comments

Alex Bennée June 8, 2021, 3:54 p.m. UTC | #1 
Richard Henderson <richard.henderson@linaro.org> writes:

> Finish the divorce of tcg/ from hw/, and do not take

> the max cpu value from MachineState; just remember what

> we were passed in tcg_init.

>

> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>


Reviewed-by: Alex Bennée <alex.bennee@linaro.org>


-- 
Alex Bennée
Luis Fernando Fujita Pires June 9, 2021, 2:58 p.m. UTC | #2 
From: Richard Henderson <richard.henderson@linaro.org>

> Finish the divorce of tcg/ from hw/, and do not take the max cpu value from

> MachineState; just remember what we were passed in tcg_init.

> 

> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

> ---

>  tcg/internal.h |  3 ++-

>  tcg/region.c   |  6 +++---

>  tcg/tcg.c      | 23 ++++++++++-------------

>  3 files changed, 15 insertions(+), 17 deletions(-)


Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>


--
Luis Pires
Instituto de Pesquisas ELDORADO
Aviso Legal - Disclaimer <https://www.eldorado.org.br/disclaimer.html>
diff mbox series

Patch

diff --git a/tcg/internal.h b/tcg/internal.h
index fcfeca232f..f9906523da 100644
--- a/tcg/internal.h
+++ b/tcg/internal.h
@@ -28,7 +28,8 @@ 
 #define TCG_HIGHWATER 1024
 
 extern TCGContext **tcg_ctxs;
-extern unsigned int n_tcg_ctxs;
+extern unsigned int tcg_cur_ctxs;
+extern unsigned int tcg_max_ctxs;
 
 void tcg_region_init(size_t tb_size, int splitwx, unsigned max_cpus);
 bool tcg_region_alloc(TCGContext *s);
diff --git a/tcg/region.c b/tcg/region.c
index f9e93e85b3..142b27276b 100644
--- a/tcg/region.c
+++ b/tcg/region.c
@@ -347,7 +347,7 @@  void tcg_region_initial_alloc(TCGContext *s)
 /* Call from a safe-work context */
 void tcg_region_reset_all(void)
 {
-    unsigned int n_ctxs = qatomic_read(&n_tcg_ctxs);
+    unsigned int n_ctxs = qatomic_read(&tcg_cur_ctxs);
     unsigned int i;
 
     qemu_mutex_lock(&region.lock);
@@ -924,7 +924,7 @@  void tcg_region_prologue_set(TCGContext *s)
  */
 size_t tcg_code_size(void)
 {
-    unsigned int n_ctxs = qatomic_read(&n_tcg_ctxs);
+    unsigned int n_ctxs = qatomic_read(&tcg_cur_ctxs);
     unsigned int i;
     size_t total;
 
@@ -960,7 +960,7 @@  size_t tcg_code_capacity(void)
 
 size_t tcg_tb_phys_invalidate_count(void)
 {
-    unsigned int n_ctxs = qatomic_read(&n_tcg_ctxs);
+    unsigned int n_ctxs = qatomic_read(&tcg_cur_ctxs);
     unsigned int i;
     size_t total = 0;
 
diff --git a/tcg/tcg.c b/tcg/tcg.c
index 5af51d41ee..0926454845 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -44,11 +44,6 @@ 
 #include "cpu.h"
 
 #include "exec/exec-all.h"
-
-#if !defined(CONFIG_USER_ONLY)
-#include "hw/boards.h"
-#endif
-
 #include "tcg/tcg-op.h"
 
 #if UINTPTR_MAX == UINT32_MAX
@@ -158,7 +153,8 @@  static int tcg_out_ldst_finalize(TCGContext *s);
 #endif
 
 TCGContext **tcg_ctxs;
-unsigned int n_tcg_ctxs;
+unsigned int tcg_cur_ctxs;
+unsigned int tcg_max_ctxs;
 TCGv_env cpu_env = 0;
 const void *tcg_code_gen_epilogue;
 uintptr_t tcg_splitwx_diff;
@@ -478,7 +474,6 @@  void tcg_register_thread(void)
 #else
 void tcg_register_thread(void)
 {
-    MachineState *ms = MACHINE(qdev_get_machine());
     TCGContext *s = g_malloc(sizeof(*s));
     unsigned int i, n;
 
@@ -494,8 +489,8 @@  void tcg_register_thread(void)
     }
 
     /* Claim an entry in tcg_ctxs */
-    n = qatomic_fetch_inc(&n_tcg_ctxs);
-    g_assert(n < ms->smp.max_cpus);
+    n = qatomic_fetch_inc(&tcg_cur_ctxs);
+    g_assert(n < tcg_max_ctxs);
     qatomic_set(&tcg_ctxs[n], s);
 
     if (n > 0) {
@@ -646,9 +641,11 @@  static void tcg_context_init(unsigned max_cpus)
      */
 #ifdef CONFIG_USER_ONLY
     tcg_ctxs = &tcg_ctx;
-    n_tcg_ctxs = 1;
+    tcg_cur_ctxs = 1;
+    tcg_max_ctxs = 1;
 #else
-    tcg_ctxs = g_new(TCGContext *, max_cpus);
+    tcg_max_ctxs = max_cpus;
+    tcg_ctxs = g_new0(TCGContext *, max_cpus);
 #endif
 
     tcg_debug_assert(!tcg_regset_test_reg(s->reserved_regs, TCG_AREG0));
@@ -3940,7 +3937,7 @@  static void tcg_reg_alloc_call(TCGContext *s, TCGOp *op)
 static inline
 void tcg_profile_snapshot(TCGProfile *prof, bool counters, bool table)
 {
-    unsigned int n_ctxs = qatomic_read(&n_tcg_ctxs);
+    unsigned int n_ctxs = qatomic_read(&tcg_cur_ctxs);
     unsigned int i;
 
     for (i = 0; i < n_ctxs; i++) {
@@ -4003,7 +4000,7 @@  void tcg_dump_op_count(void)
 
 int64_t tcg_cpu_exec_time(void)
 {
-    unsigned int n_ctxs = qatomic_read(&n_tcg_ctxs);
+    unsigned int n_ctxs = qatomic_read(&tcg_cur_ctxs);
     unsigned int i;
     int64_t ret = 0;