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tracing: fix invalid argument in mempool_monitor

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The mempool_monitor tracing tool is incorrectly reading the reason
as the first argument. Fix this!

Github-Pull: #32454
Rebased-From: 31c5ebc400
This commit is contained in:
William Casarin
2025-05-08 22:01:12 -07:00
committed by fanquake
parent f9d2c67a0c
commit fabf4ff237
1 changed files with 2 additions and 2 deletions
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4
contrib/tracing/mempool_monitor.py
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@@ -80,7 +80,7 @@ int trace_removed(struct pt_regs *ctx) {
void *phash = NULL, *preason = NULL; void *phash = NULL, *preason = NULL;
bpf_usdt_readarg(1, ctx, phash); bpf_usdt_readarg(1, ctx, phash);
bpf_probe_read_user(&removed.hash, sizeof(removed.hash), phash); bpf_probe_read_user(&removed.hash, sizeof(removed.hash), phash);
bpf_usdt_readarg(1, ctx, preason); bpf_usdt_readarg(2, ctx, preason);
bpf_probe_read_user_str(&removed.reason, sizeof(removed.reason), preason); bpf_probe_read_user_str(&removed.reason, sizeof(removed.reason), preason);
bpf_usdt_readarg(3, ctx, &removed.vsize); bpf_usdt_readarg(3, ctx, &removed.vsize);
bpf_usdt_readarg(4, ctx, &removed.fee); bpf_usdt_readarg(4, ctx, &removed.fee);
@@ -95,7 +95,7 @@ int trace_rejected(struct pt_regs *ctx) {
void *phash = NULL, *preason = NULL; void *phash = NULL, *preason = NULL;
bpf_usdt_readarg(1, ctx, phash); bpf_usdt_readarg(1, ctx, phash);
bpf_probe_read_user(&rejected.hash, sizeof(rejected.hash), phash); bpf_probe_read_user(&rejected.hash, sizeof(rejected.hash), phash);
bpf_usdt_readarg(1, ctx, preason); bpf_usdt_readarg(2, ctx, preason);
bpf_probe_read_user_str(&rejected.reason, sizeof(rejected.reason), preason); bpf_probe_read_user_str(&rejected.reason, sizeof(rejected.reason), preason);
rejected_events.perf_submit(ctx, &rejected, sizeof(rejected)); rejected_events.perf_submit(ctx, &rejected, sizeof(rejected));
return 0; return 0;