#include #include #include "tests.h" #include "event.h" #include "evlist.h" #include "header.h" #include "util.h" #include "debug.h" static int process_event(struct perf_evlist **pevlist, union perf_event *event) { struct perf_sample sample; if (event->header.type == PERF_RECORD_HEADER_ATTR) { if (perf_event__process_attr(NULL, event, pevlist)) { pr_debug("perf_event__process_attr failed\n"); return -1; } return 0; } if (event->header.type >= PERF_RECORD_USER_TYPE_START) return -1; if (!*pevlist) return -1; if (perf_evlist__parse_sample(*pevlist, event, &sample)) { pr_debug("perf_evlist__parse_sample failed\n"); return -1; } return 0; } static int process_events(union perf_event **events, size_t count) { struct perf_evlist *evlist = NULL; int err = 0; size_t i; for (i = 0; i < count && !err; i++) err = process_event(&evlist, events[i]); perf_evlist__delete(evlist); return err; } struct test_attr_event { struct attr_event attr; u64 id; }; /** * test__parse_no_sample_id_all - test parsing with no sample_id_all bit set. * * This function tests parsing data produced on kernel's that do not support the * sample_id_all bit. Without the sample_id_all bit, non-sample events (such as * mmap events) do not have an id sample appended, and consequently logic * designed to determine the id will not work. That case happens when there is * more than one selected event, so this test processes three events: 2 * attributes representing the selected events and one mmap event. * * Return: %0 on success, %-1 if the test fails. */ int test__parse_no_sample_id_all(int subtest __maybe_unused) { int err; struct test_attr_event event1 = { .attr = { .header = { .type = PERF_RECORD_HEADER_ATTR, .size = sizeof(struct test_attr_event), }, }, .id = 1, }; struct test_attr_event event2 = { .attr = { .header = { .type = PERF_RECORD_HEADER_ATTR, .size = sizeof(struct test_attr_event), }, }, .id = 2, }; struct mmap_event event3 = { .header = { .type = PERF_RECORD_MMAP, .size = sizeof(struct mmap_event), }, }; union perf_event *events[] = { (union perf_event *)&event1, (union perf_event *)&event2, (union perf_event *)&event3, }; err = process_events(events, ARRAY_SIZE(events)); if (err) return -1; return 0; } ass='form'>

path: root/tools/build/feature/test-libdw-dwarf-unwind.c

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author	Christoph Hellwig <hch@lst.de>	2017-01-30 13:15:41 +0100
committer	Bjorn Helgaas <bhelgaas@google.com>	2017-02-02 10:35:46 -0600
commit	dfef358bd1beb4e7b5c94eca944be9cd23dfc752 (patch)
tree	b9a2afb38a4c2ac8ad31f49ec0d71fe9e5b1994c /tools/vm/slabinfo.c
parent	030305d69fc6963c16003f50d7e8d74b02d0a143 (diff)

PCI/MSI: Don't apply affinity if there aren't enough vectors left

Bart reported a problem wіth an out of bounds access in the low-level IRQ affinity code, which we root caused to the qla2xxx driver assigning all its MSI-X vectors to the pre and post vectors, and not having any left for the actually spread IRQs. Fix this issue by not asking for affinity assignment when there are no vectors to assign left. Fixes: 402723ad5c62 ("PCI/MSI: Provide pci_alloc_irq_vectors_affinity()") Link: https://lkml.kernel.org/r/1485359225.3093.3.camel@sandisk.com Reported-by: Bart Van Assche <bart.vanassche@sandisk.com> Tested-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

Diffstat (limited to 'tools/vm/slabinfo.c')