From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, "Philippe Mathieu-Daudé" <philmd@linaro.org>
Subject: [PATCH v3 03/30] accel/tcg: Use more accurate max_insns for tb_overflow
Date: Fri, 24 Feb 2023 22:59:18 -1000 [thread overview]
Message-ID: <20230225085945.1798188-4-richard.henderson@linaro.org> (raw)
In-Reply-To: <20230225085945.1798188-1-richard.henderson@linaro.org>
Write back the number of insns that we attempt to translate,
so that if we longjmp out we have a more accurate limit for
the next attempt. This results in fewer restarts when some
limit is consumed by few instructions.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
accel/tcg/translator.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/accel/tcg/translator.c b/accel/tcg/translator.c
index fac1e8c465..62e8f28025 100644
--- a/accel/tcg/translator.c
+++ b/accel/tcg/translator.c
@@ -78,7 +78,7 @@ void translator_loop(CPUState *cpu, TranslationBlock *tb, int *max_insns,
plugin_enabled = plugin_gen_tb_start(cpu, db, cflags & CF_MEMI_ONLY);
while (true) {
- db->num_insns++;
+ *max_insns = ++db->num_insns;
ops->insn_start(db, cpu);
tcg_debug_assert(db->is_jmp == DISAS_NEXT); /* no early exit */
--
2.34.1
next prev parent reply other threads:[~2023-02-25 9:04 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-25 8:59 [PATCH v3 00/30] tcg: Simplify temporary usage Richard Henderson
2023-02-25 8:59 ` [PATCH v3 01/30] tcg: Adjust TCGContext.temps_in_use check Richard Henderson
2023-02-25 8:59 ` [PATCH v3 02/30] accel/tcg: Pass max_insn to gen_intermediate_code by pointer Richard Henderson
2023-02-25 8:59 ` Richard Henderson [this message]
2023-02-25 8:59 ` [PATCH v3 04/30] tcg: Remove branch-to-next regardless of reference count Richard Henderson
2023-02-25 8:59 ` [PATCH v3 05/30] tcg: Rename TEMP_LOCAL to TEMP_TB Richard Henderson
2023-02-25 8:59 ` [PATCH v3 06/30] tcg: Use noinline for major tcg_gen_code subroutines Richard Henderson
2023-02-25 8:59 ` [PATCH v3 07/30] tcg: Add liveness_pass_0 Richard Henderson
2023-02-25 8:59 ` [PATCH v3 08/30] tcg: Remove TEMP_NORMAL Richard Henderson
2023-02-25 8:59 ` [PATCH v3 09/30] tcg: Pass TCGTempKind to tcg_temp_new_internal Richard Henderson
2023-02-25 8:59 ` [PATCH v3 10/30] tcg: Use tcg_constant_i32 in tcg_gen_io_start Richard Henderson
2023-02-25 9:34 ` Daniel Henrique Barboza
2023-02-25 9:57 ` Philippe Mathieu-Daudé
2023-02-25 8:59 ` [PATCH v3 11/30] tcg: Add tcg_gen_movi_ptr Richard Henderson
2023-02-25 8:59 ` [PATCH v3 12/30] tcg: Add tcg_temp_ebb_new_{i32,i64,ptr} Richard Henderson
2023-02-25 8:59 ` [PATCH v3 13/30] tcg: Use tcg_temp_ebb_new_* in tcg/ Richard Henderson
2023-02-25 8:59 ` [PATCH v3 14/30] tcg: Use tcg_constant_ptr in do_dup Richard Henderson
2023-02-25 9:35 ` Daniel Henrique Barboza
2023-02-25 9:53 ` Philippe Mathieu-Daudé
2023-02-25 10:01 ` Richard Henderson
2023-02-25 8:59 ` [PATCH v3 15/30] accel/tcg/plugin: Use tcg_temp_ebb_* Richard Henderson
2023-02-25 8:59 ` [PATCH v3 16/30] accel/tcg/plugin: Tidy plugin_gen_disable_mem_helpers Richard Henderson
2023-02-25 8:59 ` [PATCH v3 17/30] tcg: Don't re-use TEMP_TB temporaries Richard Henderson
2023-02-25 8:59 ` [PATCH v3 18/30] tcg: Change default temp lifetime to TEMP_TB Richard Henderson
2023-02-25 8:59 ` [PATCH v3 19/30] target/arm: Drop copies in gen_sve_{ldr,str} Richard Henderson
2023-02-25 8:59 ` [PATCH v3 20/30] target/arm: Don't use tcg_temp_local_new_* Richard Henderson
2023-02-25 10:05 ` Philippe Mathieu-Daudé
2023-02-25 10:09 ` Richard Henderson
2023-02-25 10:13 ` Philippe Mathieu-Daudé
2023-02-25 8:59 ` [PATCH v3 21/30] target/cris: Don't use tcg_temp_local_new Richard Henderson
2023-02-25 8:59 ` [PATCH v3 22/30] target/hexagon: Don't use tcg_temp_local_new_* Richard Henderson
2023-02-25 8:59 ` [PATCH v3 23/30] target/hppa: Don't use tcg_temp_local_new Richard Henderson
2023-02-25 8:59 ` [PATCH v3 24/30] target/i386: " Richard Henderson
2023-02-25 8:59 ` [PATCH v3 25/30] target/mips: " Richard Henderson
2023-02-25 8:59 ` [PATCH v3 26/30] target/ppc: " Richard Henderson
2023-02-25 8:59 ` [PATCH v3 27/30] target/xtensa: Don't use tcg_temp_local_new_* Richard Henderson
2023-02-25 8:59 ` [PATCH v3 28/30] exec/gen-icount: Don't use tcg_temp_local_new_i32 Richard Henderson
2023-02-25 8:59 ` [PATCH v3 29/30] tcg: Remove tcg_temp_local_new_*, tcg_const_local_* Richard Henderson
2023-02-25 8:59 ` [PATCH v3 30/30] tcg: Update docs/devel/tcg-ops.rst for temporary changes Richard Henderson
2023-02-25 9:54 ` Daniel Henrique Barboza
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