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linux-user/main: Allow setting tb-size

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While qemu-system can set tb-size using -accel tcg,tb-size=n, there
is no similar knob for qemu-user. Add one in a way similar to how
one-insn-per-tb is already handled.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20240730215532.1442-1-iii@linux.ibm.com>
This commit is contained in:
Ilya Leoshkevich 2024-07-30 23:54:57 +02:00 • committed by Richard Henderson
parent 98c7362b1e
commit 44ed2fd1ea
1 changed files with 12 additions and 0 deletions
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12
linux-user/main.c
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@ -72,6 +72,7 @@ char *exec_path;
char real_exec_path[PATH_MAX]; char real_exec_path[PATH_MAX];
static bool opt_one_insn_per_tb; static bool opt_one_insn_per_tb;
static unsigned long opt_tb_size;
static const char *argv0; static const char *argv0;
static const char *gdbstub; static const char *gdbstub;
static envlist_t *envlist; static envlist_t *envlist;
@ -425,6 +426,13 @@ static void handle_arg_one_insn_per_tb(const char *arg)
opt_one_insn_per_tb = true; opt_one_insn_per_tb = true;
} }
static void handle_arg_tb_size(const char *arg)
{
if (qemu_strtoul(arg, NULL, 0, &opt_tb_size)) {
usage(EXIT_FAILURE);
}
}
static void handle_arg_strace(const char *arg) static void handle_arg_strace(const char *arg)
{ {
enable_strace = true; enable_strace = true;
@ -517,6 +525,8 @@ static const struct qemu_argument arg_table[] = {
{"one-insn-per-tb", {"one-insn-per-tb",
"QEMU_ONE_INSN_PER_TB", false, handle_arg_one_insn_per_tb, "QEMU_ONE_INSN_PER_TB", false, handle_arg_one_insn_per_tb,
"", "run with one guest instruction per emulated TB"}, "", "run with one guest instruction per emulated TB"},
{"tb-size", "QEMU_TB_SIZE", true, handle_arg_tb_size,
"size", "TCG translation block cache size"},
{"strace", "QEMU_STRACE", false, handle_arg_strace, {"strace", "QEMU_STRACE", false, handle_arg_strace,
"", "log system calls"}, "", "log system calls"},
{"seed", "QEMU_RAND_SEED", true, handle_arg_seed, {"seed", "QEMU_RAND_SEED", true, handle_arg_seed,
@ -808,6 +818,8 @@ int main(int argc, char **argv, char **envp)
accel_init_interfaces(ac); accel_init_interfaces(ac);
object_property_set_bool(OBJECT(accel), "one-insn-per-tb", object_property_set_bool(OBJECT(accel), "one-insn-per-tb",
opt_one_insn_per_tb, &error_abort); opt_one_insn_per_tb, &error_abort);
object_property_set_int(OBJECT(accel), "tb-size",
opt_tb_size, &error_abort);
ac->init_machine(NULL); ac->init_machine(NULL);
} }