#include #include #include #include #include #include /* for ceph_kvmalloc */ struct ceph_buffer *ceph_buffer_new(size_t len, gfp_t gfp) { struct ceph_buffer *b; b = kmalloc(sizeof(*b), gfp); if (!b) return NULL; b->vec.iov_base = ceph_kvmalloc(len, gfp); if (!b->vec.iov_base) { kfree(b); return NULL; } kref_init(&b->kref); b->alloc_len = len; b->vec.iov_len = len; dout("buffer_new %p\n", b); return b; } EXPORT_SYMBOL(ceph_buffer_new); void ceph_buffer_release(struct kref *kref) { struct ceph_buffer *b = container_of(kref, struct ceph_buffer, kref); dout("buffer_release %p\n", b); kvfree(b->vec.iov_base); kfree(b); } EXPORT_SYMBOL(ceph_buffer_release); int ceph_decode_buffer(struct ceph_buffer **b, void **p, void *end) { size_t len; ceph_decode_need(p, end, sizeof(u32), bad); len = ceph_decode_32(p); dout("decode_buffer len %d\n", (int)len); ceph_decode_need(p, end, len, bad); *b = ceph_buffer_new(len, GFP_NOFS); if (!*b) return -ENOMEM; ceph_decode_copy(p, (*b)->vec.iov_base, len); return 0; bad: return -EINVAL; } 'packet-loop-back'>packet-loop-back net-next plumbingsTobias Klauser
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authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>2016-04-19 10:24:38 -0400
committerSteven Rostedt <rostedt@goodmis.org>2016-04-19 10:28:29 -0400
commit540b589e6349779c0eeb8de82450b62a4569ffd9 (patch)
tree9731fc40bf9c8ab60b9bfa77173bef7f52c251f6
parentc37775d57830a36382a9774bb84eca4ce3d019cc (diff)
tracing: Update the documentation to describe "event-fork" option
Add documentation to the ftrace.txt file in Documentation to describe the event-fork option. Also add the missing "display-graph" option now that it shows up in the trace_options file (from a previous commit). Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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