diff options
| -rw-r--r-- | kernel/gsp_sema_service.c | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/kernel/gsp_sema_service.c b/kernel/gsp_sema_service.c index 76fcdf5..c9f5969 100644 --- a/kernel/gsp_sema_service.c +++ b/kernel/gsp_sema_service.c @@ -3020,6 +3020,11 @@ struct svc_ipin_alt { static struct svc_ipin_alt svc_ipin_alt[SVC_IPIN_ALT_SLOTS]; static u64 svc_pushalt_hits; /* push reads served by a displaced pair */ static u32 svc_pushalt_log; +/* r707x: per-client push-read attempt witness (pump read site). */ +static u32 svc_rdw_log; +static u8 svc_read_last_src; +/* r707d: bounded push-read failure witness (see svc_read_va_push_ex). */ +static u32 svc_pushfail_log; static int svc_ipin_alt_lookup(u64 va, u64 *pa, int *ap) { @@ -12691,6 +12696,9 @@ static void svc_gr_defer_reset(void); static void svc_session_flush(void) { + /* r707x: per-client witness budgets. */ + svc_pushfail_log = 0; + svc_rdw_log = 0; unsigned long flags; u32 i; @@ -14067,9 +14075,11 @@ static int svc_read_va_push_ex(struct nv_vgpu_device *vgpu, */ if (src == 3 && first && !memchr_inv(p, 0, chunk)) continue; + svc_read_last_src = (u8)src; done = true; } if (!done) { + svc_read_last_src = 0xff; if (svc_pushfail_log < 96) { u64 ipa = 0, apa = 0; int iap = 0, aap = 0; @@ -24414,9 +24424,21 @@ static void svc_pump_channels(struct nv_vgpu_device *vgpu) if (pb) { int rescue_rc; - bool unreadable = - svc_read_va_push(vgpu, ch, va, - pb, len) != 0; + int rd_rc; + bool unreadable; + + svc_read_last_src = 0xff; + rd_rc = svc_read_va_push(vgpu, ch, va, + pb, len); + unreadable = rd_rc != 0; + if (gsp_sema_dbg && svc_rdw_log < 400 && + !ch->engine_type) { + svc_rdw_log++; + pr_info("sema-rdw: h=0x%x va=0x%llx len=%u rc=%d src=%u\n", + ch->h_object, va, len, + rd_rc, + (unsigned)svc_read_last_src); + } bool injected = false; bool allow_ops = (ch->engine_type != 0); |