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From: Andrii Nakryiko <andriin@fb.com>
To: <dwarves@vger.kernel.org>
Cc: <bpf@vger.kernel.org>, Andrii Nakryiko <andriin@fb.com>
Subject: [PATCH dwarves 07/11] btf_encoder: discard CUs after BTF encoding
Date: Tue, 29 Sep 2020 21:27:38 -0700
Message-ID: <20200930042742.2525310-8-andriin@fb.com> (raw)
In-Reply-To: <20200930042742.2525310-1-andriin@fb.com>

When doing BTF encoding/deduping, DWARF CUs are never used after BTF encoding
is done, so there is no point in wasting memory and keeping them in memory. So
discard them immediately.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
---
 pahole.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pahole.c b/pahole.c
index ed87529ce65d..745f77ffe430 100644
--- a/pahole.c
+++ b/pahole.c
@@ -2368,7 +2368,7 @@ static enum load_steal_kind pahole_stealer(struct cu *cu,
 			fprintf(stderr, "Encountered error while encoding BTF.\n");
 			exit(1);
 		}
-		return LSK__KEEPIT;
+		return LSK__DELETE;
 	}
 
 	if (ctf_encode) {
-- 
2.24.1


  parent reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-30  4:27 [PATCH dwarves 00/11] Switch BTF loading and encoding to libbpf APIs Andrii Nakryiko
2020-09-30  4:27 ` [PATCH dwarves 01/11] libbpf: update to latest libbpf version Andrii Nakryiko
2020-09-30  4:27 ` [PATCH dwarves 02/11] btf_encoder: detect BTF encoding errors and exit Andrii Nakryiko
2020-09-30  4:27 ` [PATCH dwarves 03/11] dwarves: expose and maintain active debug info loader operations Andrii Nakryiko
2020-09-30  4:27 ` [PATCH dwarves 04/11] btf_loader: use libbpf to load BTF Andrii Nakryiko
2020-10-08 18:06   ` Arnaldo Carvalho de Melo
2020-10-08 19:32     ` Andrii Nakryiko
2020-09-30  4:27 ` [PATCH dwarves 05/11] btf_encoder: use libbpf APIs to encode BTF type info Andrii Nakryiko
2020-09-30  4:27 ` [PATCH dwarves 06/11] btf_encoder: fix emitting __ARRAY_SIZE_TYPE__ as index range type Andrii Nakryiko
2020-09-30  4:27 ` Andrii Nakryiko [this message]
2020-09-30  4:27 ` [PATCH dwarves 08/11] btf_encoder: revamp how per-CPU variables are encoded Andrii Nakryiko
2020-09-30  4:27 ` [PATCH dwarves 09/11] dwarf_loader: increase the size of lookup hash map Andrii Nakryiko
2020-09-30  4:27 ` [PATCH dwarves 10/11] strings: use BTF's string APIs for strings management Andrii Nakryiko
2020-09-30  4:27 ` [PATCH dwarves 11/11] btf_encoder: support cross-compiled ELF binaries with different endianness Andrii Nakryiko

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