#ifndef __PERF_CPUMAP_H #define __PERF_CPUMAP_H #include #include #include #include "perf.h" #include "util/debug.h" struct cpu_map { atomic_t refcnt; int nr; int map[]; }; struct cpu_map *cpu_map__new(const char *cpu_list); struct cpu_map *cpu_map__empty_new(int nr); struct cpu_map *cpu_map__dummy_new(void); struct cpu_map *cpu_map__new_data(struct cpu_map_data *data); struct cpu_map *cpu_map__read(FILE *file); size_t cpu_map__snprint(struct cpu_map *map, char *buf, size_t size); size_t cpu_map__fprintf(struct cpu_map *map, FILE *fp); int cpu_map__get_socket_id(int cpu); int cpu_map__get_socket(struct cpu_map *map, int idx, void *data); int cpu_map__get_core_id(int cpu); int cpu_map__get_core(struct cpu_map *map, int idx, void *data); int cpu_map__build_socket_map(struct cpu_map *cpus, struct cpu_map **sockp); int cpu_map__build_core_map(struct cpu_map *cpus, struct cpu_map **corep); struct cpu_map *cpu_map__get(struct cpu_map *map); void cpu_map__put(struct cpu_map *map); static inline int cpu_map__socket(struct cpu_map *sock, int s) { if (!sock || s > sock->nr || s < 0) return 0; return sock->map[s]; } static inline int cpu_map__id_to_socket(int id) { return id >> 16; } static inline int cpu_map__id_to_cpu(int id) { return id & 0xffff; } static inline int cpu_map__nr(const struct cpu_map *map) { return map ? map->nr : 1; } static inline bool cpu_map__empty(const struct cpu_map *map) { return map ? map->map[0] == -1 : true; } int cpu__setup_cpunode_map(void); int cpu__max_node(void); int cpu__max_cpu(void); int cpu__get_node(int cpu); int cpu_map__build_map(struct cpu_map *cpus, struct cpu_map **res, int (*f)(struct cpu_map *map, int cpu, void *data), void *data); int cpu_map__cpu(struct cpu_map *cpus, int idx); bool cpu_map__has(struct cpu_map *cpus, int cpu); int cpu_map__idx(struct cpu_map *cpus, int cpu); #endif /* __PERF_CPUMAP_H */ s-private-remove&id=dfef358bd1beb4e7b5c94eca944be9cd23dfc752'>treecommitdiff
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authorChristoph Hellwig <hch@lst.de>2017-01-30 13:15:41 +0100
committerBjorn Helgaas <bhelgaas@google.com>2017-02-02 10:35:46 -0600
commitdfef358bd1beb4e7b5c94eca944be9cd23dfc752 (patch)
treeb9a2afb38a4c2ac8ad31f49ec0d71fe9e5b1994c /net/bluetooth/af_bluetooth.c
parent030305d69fc6963c16003f50d7e8d74b02d0a143 (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 'net/bluetooth/af_bluetooth.c')