accel/tcg: Avoid unnecessary call overhead from qemu_plugin_vcpu_mem_cb
If there are not any QEMU plugin memory callback functions, checking
before calling the qemu_plugin_vcpu_mem_cb function can reduce the
function call overhead.
Signed-off-by: Max Chou <max.chou@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
Message-Id: <20240613175122.1299212-2-max.chou@sifive.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240620152220.2192768-13-alex.bennee@linaro.org>
diff --git a/accel/tcg/ldst_common.c.inc b/accel/tcg/ldst_common.c.inc
index c82048e..87ceb95 100644
--- a/accel/tcg/ldst_common.c.inc
+++ b/accel/tcg/ldst_common.c.inc
@@ -125,7 +125,9 @@
static void plugin_load_cb(CPUArchState *env, abi_ptr addr, MemOpIdx oi)
{
- qemu_plugin_vcpu_mem_cb(env_cpu(env), addr, oi, QEMU_PLUGIN_MEM_R);
+ if (cpu_plugin_mem_cbs_enabled(env_cpu(env))) {
+ qemu_plugin_vcpu_mem_cb(env_cpu(env), addr, oi, QEMU_PLUGIN_MEM_R);
+ }
}
uint8_t cpu_ldb_mmu(CPUArchState *env, abi_ptr addr, MemOpIdx oi, uintptr_t ra)
@@ -188,7 +190,9 @@
static void plugin_store_cb(CPUArchState *env, abi_ptr addr, MemOpIdx oi)
{
- qemu_plugin_vcpu_mem_cb(env_cpu(env), addr, oi, QEMU_PLUGIN_MEM_W);
+ if (cpu_plugin_mem_cbs_enabled(env_cpu(env))) {
+ qemu_plugin_vcpu_mem_cb(env_cpu(env), addr, oi, QEMU_PLUGIN_MEM_W);
+ }
}
void cpu_stb_mmu(CPUArchState *env, abi_ptr addr, uint8_t val,
