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accel/tcg: Avoid unnecessary call overhead from qemu_plugin_vcpu_mem_cb

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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>
This commit is contained in:
Max Chou 2024-06-20 16:22:20 +01:00 committed by Alex Bennée
parent ca7d7f4276
commit fce3d48038
1 changed files with 6 additions and 2 deletions
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8
accel/tcg/ldst_common.c.inc
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@ -125,7 +125,9 @@ void helper_st_i128(CPUArchState *env, uint64_t addr, Int128 val, MemOpIdx oi)
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 @@ Int128 cpu_ld16_mmu(CPUArchState *env, abi_ptr addr,
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,