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authorEric Auger <eric.auger@linaro.org>2015-07-06 12:15:14 -0600
committerAlex Williamson <alex.williamson@redhat.com>2015-07-06 12:15:14 -0600
commitfb5f816499a5184a1336d72db030b8419b523082 (patch)
tree6458bdd3886c6e2c4c1922e6289e52fda2f318ca /trace-events
parent879904e8635b316de18393222f02d46d2d1f7f4e (diff)
hw/vfio/platform: add irqfd support
This patch aims at optimizing IRQ handling using irqfd framework. Instead of handling the eventfds on user-side they are handled on kernel side using - the KVM irqfd framework, - the VFIO driver virqfd framework. the virtual IRQ completion is trapped at interrupt controller This removes the need for fast/slow path swap. Overall this brings significant performance improvements. Signed-off-by: Alvise Rigo <a.rigo@virtualopensystems.com> Signed-off-by: Eric Auger <eric.auger@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Tested-by: Vikram Sethi <vikrams@codeaurora.org> Acked-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'trace-events')
-rw-r--r--trace-events1
1 files changed, 1 insertions, 0 deletions
diff --git a/trace-events b/trace-events
index 52b7efa9a4..d24d80aed2 100644
--- a/trace-events
+++ b/trace-events
@@ -1594,6 +1594,7 @@ vfio_platform_intp_interrupt(int pin, int fd) "Inject IRQ #%d (fd = %d)"
vfio_platform_intp_inject_pending_lockheld(int pin, int fd) "Inject pending IRQ #%d (fd = %d)"
vfio_platform_populate_interrupts(int pin, int count, int flags) "- IRQ index %d: count %d, flags=0x%x"
vfio_intp_interrupt_set_pending(int index) "irq %d is set PENDING"
+vfio_platform_start_irqfd_injection(int index, int fd, int resamplefd) "IRQ index=%d, fd = %d, resamplefd = %d"
#hw/acpi/memory_hotplug.c
mhp_acpi_invalid_slot_selected(uint32_t slot) "0x%"PRIx32