#include #include #include #include #include #include #include "libbpf.h" #include "bpf_load.h" int main(int ac, char **argv) { struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY}; long key, next_key, value; char filename[256]; struct ksym *sym; int i; snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); setrlimit(RLIMIT_MEMLOCK, &r); if (load_kallsyms()) { printf("failed to process /proc/kallsyms\n"); return 2; } if (load_bpf_file(filename)) { printf("%s", bpf_log_buf); return 1; } for (i = 0; i < 5; i++) { key = 0; printf("kprobing funcs:"); while (bpf_map_get_next_key(map_fd[0], &key, &next_key) == 0) { bpf_map_lookup_elem(map_fd[0], &next_key, &value); assert(next_key == value); sym = ksym_search(value); printf(" %s", sym->name); key = next_key; } if (key) printf("\n"); key = 0; while (bpf_map_get_next_key(map_fd[0], &key, &next_key) == 0) bpf_map_delete_elem(map_fd[0], &next_key); sleep(1); } return 0; } form.submit();'> net-next plumbingsTobias Klauser
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authorChristoph Hellwig <hch@lst.de>2017-02-05 18:10:35 +0100
committerJens Axboe <axboe@fb.com>2017-02-06 09:34:46 -0700
commiteeeefd41843218c55a8782a6920f044d9bf6207a (patch)
treec342eac46626e62745aa8e1a982626efca8b121d /tools/perf/Documentation/android.txt
parentc14024dbb156c8392908aaa822097d27c6af8ec8 (diff)
block: don't try Write Same from __blkdev_issue_zeroout
Write Same can return an error asynchronously if it turns out the underlying SCSI device does not support Write Same, which makes a proper fallback to other methods in __blkdev_issue_zeroout impossible. Thus only issue a Write Same from blkdev_issue_zeroout an don't try it at all from __blkdev_issue_zeroout as a non-invasive workaround. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Junichi Nomura <j-nomura@ce.jp.nec.com> Fixes: e73c23ff ("block: add async variant of blkdev_issue_zeroout") Tested-by: Junichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'tools/perf/Documentation/android.txt')