/* * Copyright 2014, Michael Ellerman, IBM Corp. * Licensed under GPLv2. */ #define _GNU_SOURCE #include #include #include #include #include #include #include "event.h" #include "lib.h" #include "utils.h" /* * Test that per-event excludes work. */ static int per_event_excludes(void) { struct event *e, events[4]; char *platform; int i; platform = (char *)get_auxv_entry(AT_BASE_PLATFORM); FAIL_IF(!platform); SKIP_IF(strcmp(platform, "power8") != 0); /* * We need to create the events disabled, otherwise the running/enabled * counts don't match up. */ e = &events[0]; event_init_opts(e, PERF_COUNT_HW_INSTRUCTIONS, PERF_TYPE_HARDWARE, "instructions"); e->attr.disabled = 1; e = &events[1]; event_init_opts(e, PERF_COUNT_HW_INSTRUCTIONS, PERF_TYPE_HARDWARE, "instructions(k)"); e->attr.disabled = 1; e->attr.exclude_user = 1; e->attr.exclude_hv = 1; e = &events[2]; event_init_opts(e, PERF_COUNT_HW_INSTRUCTIONS, PERF_TYPE_HARDWARE, "instructions(h)"); e->attr.disabled = 1; e->attr.exclude_user = 1; e->attr.exclude_kernel = 1; e = &events[3]; event_init_opts(e, PERF_COUNT_HW_INSTRUCTIONS, PERF_TYPE_HARDWARE, "instructions(u)"); e->attr.disabled = 1; e->attr.exclude_hv = 1; e->attr.exclude_kernel = 1; FAIL_IF(event_open(&events[0])); /* * The open here will fail if we don't have per event exclude support, * because the second event has an incompatible set of exclude settings * and we're asking for the events to be in a group. */ for (i = 1; i < 4; i++) FAIL_IF(event_open_with_group(&events[i], events[0].fd)); /* * Even though the above will fail without per-event excludes we keep * testing in order to be thorough. */ prctl(PR_TASK_PERF_EVENTS_ENABLE); /* Spin for a while */ for (i = 0; i < INT_MAX; i++) asm volatile("" : : : "memory"); prctl(PR_TASK_PERF_EVENTS_DISABLE); for (i = 0; i < 4; i++) { FAIL_IF(event_read(&events[i])); event_report(&events[i]); } /* * We should see that all events have enabled == running. That * shows that they were all on the PMU at once. */ for (i = 0; i < 4; i++) FAIL_IF(events[i].result.running != events[i].result.enabled); /* * We can also check that the result for instructions is >= all the * other counts. That's because it is counting all instructions while * the others are counting a subset. */ for (i = 1; i < 4; i++) FAIL_IF(events[0].result.value < events[i].result.value); for (i = 0; i < 4; i++) event_close(&events[i]); return 0; } int main(void) { return test_harness(per_event_excludes, "per_event_excludes"); } ''/>

path: root/drivers

diff options

author	John Fastabend <john.fastabend@gmail.com>	2017-02-02 19:15:01 -0800
committer	David S. Miller <davem@davemloft.net>	2017-02-07 10:05:11 -0500
commit	0354e4d19cd5de51d6096a07ba44eda0ee61a6e9 (patch)
tree	24dd608b4581c431e471a5365c49c831cbefd16d /drivers
parent	473153291b8a131c86787fd9b076a529573e2c19 (diff)

virtio_net: factor out xdp handler for readability

At this point the do_xdp_prog is mostly if/else branches handling the different modes of virtio_net. So remove it and handle running the program in the per mode handlers. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Acked-by: Jason Wang <jasowang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>

Diffstat (limited to 'drivers')

-rw-r--r--

drivers/net/virtio_net.c

1 files changed, 35 insertions, 51 deletions


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