motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-04 16:23:55 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

cpu-timers, icount: new modules

Browse source 
refactoring of cpus.c continues with cpu timer state extraction.

cpu-timers: responsible for the softmmu cpu timers state,
            including cpu clocks and ticks.

icount: counts the TCG instructions executed. As such it is specific to
the TCG accelerator. Therefore, it is built only under CONFIG_TCG.

One complication is due to qtest, which uses an icount field to warp time
as part of qtest (qtest_clock_warp).

In order to solve this problem, provide a separate counter for qtest.

This requires fixing assumptions scattered in the code that
qtest_enabled() implies icount_enabled(), checking each specific case.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[remove redundant initialization with qemu_spice_init]
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
[fix lingering calls to icount_get]
Signed-off-by: Claudio Fontana <cfontana@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Claudio Fontana 2020-08-19 13:17:19 +02:00 • committed by Paolo Bonzini
parent 0ac0b47c44
commit 740b175973
37 changed files with 1128 additions and 843 deletions
Download patch file Download diff file Expand all files Collapse all files

4
include/exec/cpu-all.h
View file

@ -407,8 +407,12 @@ static inline bool tlb_hit(target_ulong tlb_addr, target_ulong addr)
return tlb_hit_page(tlb_addr, addr & TARGET_PAGE_MASK);
}
#ifdef CONFIG_TCG
void dump_drift_info(void);
void dump_exec_info(void);
void dump_opcount_info(void);
#endif /* CONFIG_TCG */
#endif /* !CONFIG_USER_ONLY */
/* Returns: 0 on success, -1 on error */

4
include/exec/exec-all.h
View file

@ -25,7 +25,7 @@
#ifdef CONFIG_TCG
#include "exec/cpu_ldst.h"
#endif
#include "sysemu/cpus.h"
#include "sysemu/cpu-timers.h"
/* allow to see translation results - the slowdown should be negligible, so we leave it */
#define DEBUG_DISAS
@ -497,7 +497,7 @@ static inline uint32_t tb_cflags(const TranslationBlock *tb)
static inline uint32_t curr_cflags(void)
{
return (parallel_cpus ? CF_PARALLEL : 0)
| (use_icount ? CF_USE_ICOUNT : 0);
| (icount_enabled() ? CF_USE_ICOUNT : 0);
}
/* TranslationBlock invalidate API */