#ifndef __BPF_LOAD_H #define __BPF_LOAD_H #include "libbpf.h" #define MAX_MAPS 32 #define MAX_PROGS 32 extern int map_fd[MAX_MAPS]; extern int prog_fd[MAX_PROGS]; extern int event_fd[MAX_PROGS]; extern char bpf_log_buf[BPF_LOG_BUF_SIZE]; extern int prog_cnt; /* parses elf file compiled by llvm .c->.o * . parses 'maps' section and creates maps via BPF syscall * . parses 'license' section and passes it to syscall * . parses elf relocations for BPF maps and adjusts BPF_LD_IMM64 insns by * storing map_fd into insn->imm and marking such insns as BPF_PSEUDO_MAP_FD * . loads eBPF programs via BPF syscall * * One ELF file can contain multiple BPF programs which will be loaded * and their FDs stored stored in prog_fd array * * returns zero on success */ int load_bpf_file(char *path); void read_trace_pipe(void); struct ksym { long addr; char *name; }; int load_kallsyms(void); struct ksym *ksym_search(long key); int set_link_xdp_fd(int ifindex, int fd); #endif adf5c48c421a4ca76468'/> net-next plumbingsTobias Klauser
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authorThomas Gleixner <tglx@linutronix.de>2017-01-31 23:58:38 +0100
committerIngo Molnar <mingo@kernel.org>2017-02-01 08:37:27 +0100
commitdd86e373e09fb16b83e8adf5c48c421a4ca76468 (patch)
tree55703c2ea8584e303e342090614e0aab3509ab21 /include/net/netns/xfrm.h
parent0b3589be9b98994ce3d5aeca52445d1f5627c4ba (diff)
perf/x86/intel/rapl: Make package handling more robust
The package management code in RAPL relies on package mapping being available before a CPU is started. This changed with: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") because the ACPI/BIOS information turned out to be unreliable, but that left RAPL in broken state. This was not noticed because on a regular boot all CPUs are online before RAPL is initialized. A possible fix would be to reintroduce the mess which allocates a package data structure in CPU prepare and when it turns out to already exist in starting throw it away later in the CPU online callback. But that's a horrible hack and not required at all because RAPL becomes functional for perf only in the CPU online callback. That's correct because user space is not yet informed about the CPU being onlined, so nothing caan rely on RAPL being available on that particular CPU. Move the allocation to the CPU online callback and simplify the hotplug handling. At this point the package mapping is established and correct. This also adds a missing check for available package data in the event_init() function. Reported-by: Yasuaki Ishimatsu <yasu.isimatu@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Stephane Eranian <eranian@google.com> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 9d85eb9119f4 ("x86/smpboot: Make logical package management more robust") Link: http://lkml.kernel.org/r/20170131230141.212593966@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/net/netns/xfrm.h')