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authorHailong Liu <liu.hailong6@zte.com.cn>2021-05-11 22:04:29 +0800
committerAndrii Nakryiko <andrii@kernel.org>2021-05-12 12:29:43 -0700
commit0303ce17347a02863c4ddef9777a42ff0315acb6 (patch)
treeac07054188b6d51d6d18fd17241de1e3ba512e03 /samples
parente5670fa0293b05e8e24dae7d18481aba281cb85d (diff)
samples, bpf: Suppress compiler warning
While cross compiling on ARM32 , the casting from pointer to __u64 will cause warnings: samples/bpf/task_fd_query_user.c: In function 'main': samples/bpf/task_fd_query_user.c:399:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 399 | uprobe_file_offset = (__u64)main - (__u64)&__executable_start; | ^ samples/bpf/task_fd_query_user.c:399:37: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 399 | uprobe_file_offset = (__u64)main - (__u64)&__executable_start; Workaround this by using "unsigned long" to adapt to different ARCHs. Signed-off-by: Hailong Liu <liu.hailong6@zte.com.cn> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210511140429.89426-1-liuhailongg6@163.com
Diffstat (limited to 'samples')
-rw-r--r--samples/bpf/task_fd_query_user.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/samples/bpf/task_fd_query_user.c b/samples/bpf/task_fd_query_user.c
index a78025b0026b..c9a0ca8351fd 100644
--- a/samples/bpf/task_fd_query_user.c
+++ b/samples/bpf/task_fd_query_user.c
@@ -396,7 +396,7 @@ int main(int argc, char **argv)
* on different systems with different compilers. The right way is
* to parse the ELF file. We took a shortcut here.
*/
- uprobe_file_offset = (__u64)main - (__u64)&__executable_start;
+ uprobe_file_offset = (unsigned long)main - (unsigned long)&__executable_start;
CHECK_AND_RET(test_nondebug_fs_probe("uprobe", (char *)argv[0],
uprobe_file_offset, 0x0, false,
BPF_FD_TYPE_UPROBE,