tree b1414ab5924b46bd658b8da7df05975f98365165
parent 1c8dab7da1d27a474721a789777af82edf2085c1
author Hou Tao <houtao1@huawei.com> 1633340935 +0800
committer Andrii Nakryiko <andrii@kernel.org> 1633724577 -0700

bpf: Support writable context for bare tracepoint

Commit 9df1c28bb752 ("bpf: add writable context for raw tracepoints")
supports writable context for tracepoint, but it misses the support
for bare tracepoint which has no associated trace event.

Bare tracepoint is defined by DECLARE_TRACE(), so adding a corresponding
DECLARE_TRACE_WRITABLE() macro to generate a definition in __bpf_raw_tp_map
section for bare tracepoint in a similar way to DEFINE_TRACE_WRITABLE().

Signed-off-by: Hou Tao <houtao1@huawei.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20211004094857.30868-2-hotforest@gmail.com