Commit 6a24f34e authored by Paolo Bonzini's avatar Paolo Bonzini
Browse files

tco: add trace events 



Add trace events to the PCH watchdog timer, it can be useful to see how
the guest is using it.

Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Message-Id: <1507816448-86665-1-git-send-email-pbonzini@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent b7ecba0f

hw/acpi/tco.c

+9 −2
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
#include "hw/i386/ich9.h"



#include "hw/acpi/tco.h"

#include "trace.h"



//#define DEBUG
@@ -41,8 +42,11 @@ enum { 


static inline void tco_timer_reload(TCOIORegs *tr)

{

    tr->expire_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +

        ((int64_t)(tr->tco.tmr & TCO_TMR_MASK) * TCO_TICK_NSEC);

    int ticks = tr->tco.tmr & TCO_TMR_MASK;

    int64_t nsec = (int64_t)ticks * TCO_TICK_NSEC;



    trace_tco_timer_reload(ticks, nsec / 1000000);

    tr->expire_time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + nsec;

    timer_mod(tr->tco_timer, tr->expire_time);

}
@@ -59,6 +63,9 @@ static void tco_timer_expired(void *opaque) 
    ICH9LPCState *lpc = container_of(pm, ICH9LPCState, pm);

    uint32_t gcs = pci_get_long(lpc->chip_config + ICH9_CC_GCS);



    trace_tco_timer_expired(tr->timeouts_no,

                            lpc->pin_strap.spkr_hi,

                            !!(gcs & ICH9_CC_GCS_NO_REBOOT));

    tr->tco.rld = 0;

    tr->tco.sts1 |= TCO_TIMEOUT;

    if (++tr->timeouts_no == 2) {

hw/acpi/trace-events

+4 −0
Original line number Diff line number Diff line
@@ -30,3 +30,7 @@ cpuhp_acpi_ejecting_invalid_cpu(uint32_t idx) "0x%"PRIx32 
cpuhp_acpi_ejecting_cpu(uint32_t idx) "0x%"PRIx32

cpuhp_acpi_write_ost_ev(uint32_t slot, uint32_t ev) "idx[0x%"PRIx32"] OST EVENT: 0x%"PRIx32

cpuhp_acpi_write_ost_status(uint32_t slot, uint32_t st) "idx[0x%"PRIx32"] OST STATUS: 0x%"PRIx32



# hw/acpi/tco.c

tco_timer_reload(int ticks, int msec) "ticks=%d (%d ms)"

tco_timer_expired(int timeouts_no, bool strap, bool no_reboot) "timeouts_no=%d no_reboot=%d/%d"