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Tracing pull request

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

Tracing pull request

# gpg: Signature made Tue 01 Apr 2014 19:08:48 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"

* remotes/stefanha/tags/tracing-pull-request:
  trace: add workaround for SystemTap PR13296

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2014-04-01 20:45:42 +01:00
commit 82c6f51373
1 changed files with 6 additions and 1 deletions
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7
hw/intc/apic_common.c
View File

@ -117,7 +117,12 @@ void apic_report_irq_delivered(int delivered)
void apic_reset_irq_delivered(void)
{
trace_apic_reset_irq_delivered(apic_irq_delivered);
/* Copy this into a local variable to encourage gcc to emit a plain
* register for a sys/sdt.h marker. For details on this workaround, see:
* https://sourceware.org/bugzilla/show_bug.cgi?id=13296
*/
volatile int a_i_d = apic_irq_delivered;
trace_apic_reset_irq_delivered(a_i_d);
apic_irq_delivered = 0;
}