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Date: Mon, 8 Jul 2019 21:00:07 -0700
From: Andrii Nakryiko <andriin@...com>
To: <andrii.nakryiko@...il.com>, <ast@...com>, <daniel@...earbox.net>,
<bpf@...r.kernel.org>, <netdev@...r.kernel.org>,
<kernel-team@...com>
CC: Andrii Nakryiko <andriin@...com>
Subject: [PATCH bpf-next] libbpf: fix ptr to u64 conversion warning on 32-bit platforms
On 32-bit platforms compiler complains about conversion:
libbpf.c: In function ‘perf_event_open_probe’:
libbpf.c:4112:17: error: cast from pointer to integer of different
size [-Werror=pointer-to-int-cast]
attr.config1 = (uint64_t)(void *)name; /* kprobe_func or uprobe_path */
^
Reported-by: Matt Hart <matthew.hart@...aro.org>
Fixes: b26500274767 ("libbpf: add kprobe/uprobe attach API")
Tested-by: Matt Hart <matthew.hart@...aro.org>
Signed-off-by: Andrii Nakryiko <andriin@...com>
---
tools/lib/bpf/libbpf.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index ed07789b3e62..794dd5064ae8 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -4126,8 +4126,8 @@ static int perf_event_open_probe(bool uprobe, bool retprobe, const char *name,
}
attr.size = sizeof(attr);
attr.type = type;
- attr.config1 = (uint64_t)(void *)name; /* kprobe_func or uprobe_path */
- attr.config2 = offset; /* kprobe_addr or probe_offset */
+ attr.config1 = ptr_to_u64(name); /* kprobe_func or uprobe_path */
+ attr.config2 = offset; /* kprobe_addr or probe_offset */
/* pid filter is meaningful only for uprobes */
pfd = syscall(__NR_perf_event_open, &attr,
--
2.17.1
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