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Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging

# gpg: Signature made Mon 17 Jul 2017 13:11:17 BST
# gpg:                using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/tracing-pull-request:
  trace: update old trace events in docs
  trace: [trivial] Statically enable all guest events
  trace: [tcg, trivial] Re-align generated code
  trace: [tcg] Do not generate TCG code to trace dynamically-disabled events
  exec: [tcg] Use different TBs according to the vCPU's dynamic tracing state
  trace: [tcg] Delay changes to dynamic state when translating
  trace: Allocate cpu->trace_dstate in place

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2017-07-17 18:39:31 +01:00
commit 5a477a7806
24 changed files with 137 additions and 74 deletions
Download patch file Download diff file Expand all files Collapse all files

3
include/exec/exec-all.h
View file

@ -330,6 +330,9 @@ struct TranslationBlock {
#define CF_USE_ICOUNT 0x20000
#define CF_IGNORE_ICOUNT 0x40000 /* Do not generate icount code */
/* Per-vCPU dynamic tracing state used to generate this TB */
uint32_t trace_vcpu_dstate;
uint16_t invalid;
void *tc_ptr; /* pointer to the translated code */

7
include/exec/tb-hash-xx.h
View file

@ -49,7 +49,7 @@
* contiguous in memory.
*/
static inline
uint32_t tb_hash_func5(uint64_t a0, uint64_t b0, uint32_t e)
uint32_t tb_hash_func6(uint64_t a0, uint64_t b0, uint32_t e, uint32_t f)
{
uint32_t v1 = TB_HASH_XX_SEED + PRIME32_1 + PRIME32_2;
uint32_t v2 = TB_HASH_XX_SEED + PRIME32_2;
@ -78,11 +78,14 @@ uint32_t tb_hash_func5(uint64_t a0, uint64_t b0, uint32_t e)
v4 *= PRIME32_1;
h32 = rol32(v1, 1) + rol32(v2, 7) + rol32(v3, 12) + rol32(v4, 18);
h32 += 20;
h32 += 24;
h32 += e * PRIME32_3;
h32 = rol32(h32, 17) * PRIME32_4;
h32 += f * PRIME32_3;
h32 = rol32(h32, 17) * PRIME32_4;
h32 ^= h32 >> 15;
h32 *= PRIME32_2;
h32 ^= h32 >> 13;

5
include/exec/tb-hash.h
View file

@ -58,9 +58,10 @@ static inline unsigned int tb_jmp_cache_hash_func(target_ulong pc)
#endif /* CONFIG_SOFTMMU */
static inline
uint32_t tb_hash_func(tb_page_addr_t phys_pc, target_ulong pc, uint32_t flags)
uint32_t tb_hash_func(tb_page_addr_t phys_pc, target_ulong pc, uint32_t flags,
uint32_t trace_vcpu_dstate)
{
return tb_hash_func5(phys_pc, pc, flags);
return tb_hash_func6(phys_pc, pc, flags, trace_vcpu_dstate);
}
#endif