From: Jiong Wang <jiong.wang@netronome.com>
To: alexei.starovoitov@gmail.com, daniel@iogearbox.net
Cc: bpf@vger.kernel.org, netdev@vger.kernel.org,
oss-drivers@netronome.com, Jiong Wang <jiong.wang@netronome.com>
Subject: [PATCH/RFC v2 bpf-next 01/19] bpf: refactor propagate_liveness to eliminate duplicated for loop
Date: Wed, 10 Apr 2019 20:50:15 +0100 [thread overview]
Message-ID: <1554925833-7333-2-git-send-email-jiong.wang@netronome.com> (raw)
In-Reply-To: <1554925833-7333-1-git-send-email-jiong.wang@netronome.com>
Propagation for register and stack slot are finished in separate for loop,
while they are perfect to be put into a single loop.
This could also let them share some common variables in later patches.
Signed-off-by: Jiong Wang <jiong.wang@netronome.com>
---
kernel/bpf/verifier.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index b747434..f6ebe80 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -6223,10 +6223,8 @@ static int propagate_liveness(struct bpf_verifier_env *env,
return err;
}
}
- }
- /* ... and stack slots */
- for (frame = 0; frame <= vstate->curframe; frame++) {
+ /* Propagate stack slots. */
state = vstate->frame[frame];
parent = vparent->frame[frame];
for (i = 0; i < state->allocated_stack / BPF_REG_SIZE &&
--
2.7.4
next prev parent reply other threads:[~2019-04-10 19:51 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-10 19:50 [PATCH/RFC v2 bpf-next 00/19] bpf: eliminate zero extensions for sub-register writes Jiong Wang
2019-04-10 19:50 ` Jiong Wang [this message]
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 02/19] bpf: refactor propagate_liveness to eliminate code redundance Jiong Wang
2019-04-11 2:39 ` [oss-drivers] " Jakub Kicinski
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 03/19] bpf: factor out reg and stack slot propagation into "propagate_liveness_reg" Jiong Wang
2019-04-11 2:39 ` [oss-drivers] " Jakub Kicinski
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 04/19] bpf: refactor "check_reg_arg" to eliminate code redundancy Jiong Wang
2019-04-11 2:40 ` Jakub Kicinski
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 05/19] bpf: split read liveness into REG_LIVE_READ64 and REG_LIVE_READ32 Jiong Wang
2019-04-11 2:52 ` Jakub Kicinski
2019-04-11 6:13 ` Jiong Wang
2019-04-11 16:44 ` [oss-drivers] " Jakub Kicinski
2019-04-11 16:53 ` Jiong Wang
2019-04-12 16:14 ` Jiong Wang
2019-04-11 17:22 ` Jiong Wang
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 06/19] bpf: mark lo32 writes that should be zero extended into hi32 Jiong Wang
2019-04-11 3:13 ` Jakub Kicinski
2019-04-11 6:02 ` Jiong Wang
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 07/19] bpf: reduce false alarm by refining helper call arg types Jiong Wang
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 08/19] bpf: insert explicit zero extension insn when hardware doesn't do it implicitly Jiong Wang
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 09/19] bpf: introduce new bpf prog load flags "BPF_F_TEST_RND_HI32" Jiong Wang
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 10/19] bpf: randomize high 32-bit when BPF_F_TEST_RND_HI32 is set Jiong Wang
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 11/19] libbpf: new global variable "libbpf_test_mode" Jiong Wang
2019-04-11 3:19 ` Jakub Kicinski
2019-04-11 14:32 ` Jiong Wang
2019-04-11 21:49 ` Jiong Wang
2019-04-12 22:08 ` Jiong Wang
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 12/19] selftests: enable hi32 randomization for "test_progs" and "test_verifier" Jiong Wang
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 13/19] arm: bpf: eliminate zero extension code-gen Jiong Wang
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 14/19] powerpc: " Jiong Wang
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 15/19] s390: " Jiong Wang
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 16/19] sparc: " Jiong Wang
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 17/19] x32: " Jiong Wang
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 18/19] riscv: " Jiong Wang
2019-04-10 19:50 ` [PATCH/RFC v2 bpf-next 19/19] nfp: " Jiong Wang
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