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libbpf: Minor style improvements in USDT code

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Fix several typos and references to non-existing headers.
Also use __BYTE_ORDER__ instead of __BYTE_ORDER for consistency with
the rest of the bpf code - see commit 45f2bebc8079 ("libbpf: Fix
endianness detection in BPF_CORE_READ_BITFIELD_PROBED()") for
rationale).

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220407214411.257260-2-iii@linux.ibm.com
This commit is contained in:
Ilya Leoshkevich
2022-04-07 23:44:09 +02:00
committed by Andrii Nakryiko
parent 73b8386f2e
commit fcb67a3e70
2 changed files with 8 additions and 8 deletions
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4
src/usdt.bpf.h
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@@ -166,7 +166,7 @@ int bpf_usdt_arg(struct pt_regs *ctx, __u64 arg_num, long *res)
case BPF_USDT_ARG_REG_DEREF:
/* Arg is in memory addressed by register, plus some offset
* (e.g., "-4@-1204(%rbp)" in USDT arg spec). Register is
* identified lik with BPF_USDT_ARG_REG case, and the offset
* identified like with BPF_USDT_ARG_REG case, and the offset
* is in arg_spec->val_off. We first fetch register contents
* from pt_regs, then do another user-space probe read to
* fetch argument value itself.
@@ -198,7 +198,7 @@ int bpf_usdt_arg(struct pt_regs *ctx, __u64 arg_num, long *res)
/* Retrieve user-specified cookie value provided during attach as
* bpf_usdt_opts.usdt_cookie. This serves the same purpose as BPF cookie
* returned by bpf_get_attach_cookie(). Libbpf's support for USDT is itself
* utilizaing BPF cookies internally, so user can't use BPF cookie directly
* utilizing BPF cookies internally, so user can't use BPF cookie directly
* for USDT programs and has to use bpf_usdt_cookie() API instead.
*/
static inline __noinline