46 lines
1.5 KiB
Diff
46 lines
1.5 KiB
Diff
From 0f5849187972a50adf0d9eaa8788c11f9fd926ea Mon Sep 17 00:00:00 2001
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From: Yonghong Song <yhs@fb.com>
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Date: Thu, 28 Feb 2019 11:18:04 -0800
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Subject: [PATCH] fix b.support_raw_tracepoint for 5.0 kernel
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Fix issue #2240.
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In 5.0, the following commit
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commit a38d1107f937ca95dcf820161ef44ea683d6a0b1
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Author: Matt Mullins <mmullins@fb.com>
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Date: Wed Dec 12 16:42:37 2018 -0800
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bpf: support raw tracepoints in modules
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renamed the function bpf_find_raw_tracepoint() to
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bpf_get_raw_tracepoint(). The bcc relies on checking
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bpf_find_raw_tracepoint() in /proc/kallsyms to detect
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whether raw_tracepoint is supported in kernel or not.
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We do not have better mechanism to detect raw_tracepoint
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support without additional syscalls. So tentatively,
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let us just check bpf_get_raw_tracepoint() ksym as well
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for raw_tracepoint support.
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Signed-off-by: Yonghong Song <yhs@fb.com>
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---
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src/python/bcc/__init__.py | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/src/python/bcc/__init__.py b/src/python/bcc/__init__.py
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index 01d5604b..69a048f3 100644
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--- a/src/python/bcc/__init__.py
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+++ b/src/python/bcc/__init__.py
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@@ -858,7 +858,8 @@ DEBUG_BTF = 0x20
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@staticmethod
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def support_raw_tracepoint():
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# kernel symbol "bpf_find_raw_tracepoint" indicates raw_tracepint support
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- if BPF.ksymname("bpf_find_raw_tracepoint") != -1:
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+ if BPF.ksymname("bpf_find_raw_tracepoint") != -1 or \
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+ BPF.ksymname("bpf_get_raw_tracepoint") != -1:
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return True
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return False
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--
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2.20.1
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