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cpu-timers, icount: new modules

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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
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4
include/exec/cpu-all.h
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@ -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 */