/* * Copyright (C) 2015, Wang Nan * Copyright (C) 2015, Huawei Inc. */ #ifndef __LLVM_UTILS_H #define __LLVM_UTILS_H #include "debug.h" struct llvm_param { /* Path of clang executable */ const char *clang_path; /* * Template of clang bpf compiling. 5 env variables * can be used: * $CLANG_EXEC: Path to clang. * $CLANG_OPTIONS: Extra options to clang. * $KERNEL_INC_OPTIONS: Kernel include directories. * $WORKING_DIR: Kernel source directory. * $CLANG_SOURCE: Source file to be compiled. */ const char *clang_bpf_cmd_template; /* Will be filled in $CLANG_OPTIONS */ const char *clang_opt; /* Where to find kbuild system */ const char *kbuild_dir; /* * Arguments passed to make, like 'ARCH=arm' if doing cross * compiling. Should not be used for dynamic compiling. */ const char *kbuild_opts; /* * Default is false. If set to true, write compiling result * to object file. */ bool dump_obj; /* * Default is false. If one of the above fields is set by user * explicitly then user_set_llvm is set to true. This is used * for perf test. If user doesn't set anything in .perfconfig * and clang is not found, don't trigger llvm test. */ bool user_set_param; }; extern struct llvm_param llvm_param; int perf_llvm_config(const char *var, const char *value); int llvm__compile_bpf(const char *path, void **p_obj_buf, size_t *p_obj_buf_sz); /* This function is for test__llvm() use only */ int llvm__search_clang(void); /* Following functions are reused by builtin clang support */ void llvm__get_kbuild_opts(char **kbuild_dir, char **kbuild_include_opts); int llvm__get_nr_cpus(void); void llvm__dump_obj(const char *path, void *obj_buf, size_t size); #endif >commit diff

path: root/arch/ia64/sn/kernel/sn2/io.c

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Diffstat (limited to 'arch/ia64/sn/kernel/sn2/io.c')

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2017-02-02 10:35:46 -0600
commit	dfef358bd1beb4e7b5c94eca944be9cd23dfc752 (patch)
tree	b9a2afb38a4c2ac8ad31f49ec0d71fe9e5b1994c /sound/soc/tegra
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 'sound/soc/tegra')