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bobrik
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Sep 22, 2023
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| #if defined(__TARGET_ARCH_x86) | ||
| #define FENTRY_SEC() SEC("fentry/__x64_sys_getpid") | ||
| #define FENTRY_SEC() SEC("fentry/__do_sys_getpid") |
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I can see both on our x86_64 running v6.1:
$ cat /proc/kallsyms | grep -E '( __x64_sys_getpid|__do_sys_getpid)$'
0000000000000000 t __do_sys_getpid
0000000000000000 T __x64_sys_getpid
On arm64 we only have one:
$ cat /proc/kallsyms | grep -E '( __arm64_sys_getpid|__do_sys_getpid)$'
0000000000000000 T __arm64_sys_getpid
Switching to __do_sys_getpid makes sense given what you say, even if it makes me sad for the lack of consistency.
Wanted to demo the shorter URL https://git.kernel.org/torvalds/c/. Plus, adding desc "subject" after commit SHA like kernel commits usually does for e.g. Fixes tags. Signed-off-by: Jesper Dangaard Brouer <hawk@kernel.org>
On my kernel __x64_sys_getpid() is not available in BTF vmlinux. The function __do_sys_getpid() is to use that instead. Tested on kernels: - 6.4.10-200.fc38.x86_64 - 6.5.0-rc5-net-next Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
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Hi @bobrik
I made these two small adjustments while trying out the benchmarks in ebpf_exporter.