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tracing: Rename the MIN macro to _TRACEPOINT_TEST_MIN in log_raw_p2p_msgs

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Inspired by: 00c1dbd26d (#31419)
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0xb10c 2025-01-09 06:42:05 +00:00 • committed by Luke Dashjr
parent 30308cc380
commit f93f0c9396
1 changed files with 4 additions and 3 deletions
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7
contrib/tracing/log_raw_p2p_msgs.py
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@ -41,7 +41,8 @@ from bcc import BPF, USDT
program = """
#include <uapi/linux/ptrace.h>
#define MIN(a,b) ({ __typeof__ (a) _a = (a); __typeof__ (b) _b = (b); _a < _b ? _a : _b; })
// A min() macro. Prefixed with _TRACEPOINT_TEST to avoid collision with other MIN macros.
#define _TRACEPOINT_TEST_MIN(a,b) ({ __typeof__ (a) _a = (a); __typeof__ (b) _b = (b); _a < _b ? _a : _b; })
// Maximum possible allocation size
// from include/linux/percpu.h in the Linux kernel
@ -88,7 +89,7 @@ int trace_inbound_message(struct pt_regs *ctx) {
bpf_usdt_readarg_p(3, ctx, &msg->peer_conn_type, MAX_PEER_CONN_TYPE_LENGTH);
bpf_usdt_readarg_p(4, ctx, &msg->msg_type, MAX_MSG_TYPE_LENGTH);
bpf_usdt_readarg(5, ctx, &msg->msg_size);
bpf_usdt_readarg_p(6, ctx, &msg->msg, MIN(msg->msg_size, MAX_MSG_DATA_LENGTH));
bpf_usdt_readarg_p(6, ctx, &msg->msg, _TRACEPOINT_TEST_MIN(msg->msg_size, MAX_MSG_DATA_LENGTH));
inbound_messages.perf_submit(ctx, msg, sizeof(*msg));
return 0;
@ -108,7 +109,7 @@ int trace_outbound_message(struct pt_regs *ctx) {
bpf_usdt_readarg_p(3, ctx, &msg->peer_conn_type, MAX_PEER_CONN_TYPE_LENGTH);
bpf_usdt_readarg_p(4, ctx, &msg->msg_type, MAX_MSG_TYPE_LENGTH);
bpf_usdt_readarg(5, ctx, &msg->msg_size);
bpf_usdt_readarg_p(6, ctx, &msg->msg, MIN(msg->msg_size, MAX_MSG_DATA_LENGTH));
bpf_usdt_readarg_p(6, ctx, &msg->msg, _TRACEPOINT_TEST_MIN(msg->msg_size, MAX_MSG_DATA_LENGTH));
outbound_messages.perf_submit(ctx, msg, sizeof(*msg));
return 0;