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Groups > linux.kernel > #1491996
| From | Shaohua Li <shli@fb.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH trival -resend 1/2] bpf: clean up put_cpu_var usage |
| Date | 2016-09-27 17:50 +0200 |
| Message-ID | <sm2NP-2OB-21@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
put_cpu_var takes the percpu data, not the data returned from get_cpu_var. This doesn't change the behavior. Cc: Tejun Heo <tj@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Shaohua Li <shli@fb.com> --- kernel/bpf/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index 7b7baae..aa6d981 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -1031,7 +1031,7 @@ BPF_CALL_0(bpf_user_rnd_u32) state = &get_cpu_var(bpf_user_rnd_state); res = prandom_u32_state(state); - put_cpu_var(state); + put_cpu_var(bpf_user_rnd_state); return res; } -- 2.9.3
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[PATCH trival -resend 1/2] bpf: clean up put_cpu_var usage Shaohua Li <shli@fb.com> - 2016-09-27 17:50 +0200
[PATCH trival -resend 2/2] lib: clean up put_cpu_var usage Shaohua Li <shli@fb.com> - 2016-09-27 17:50 +0200
Re: [PATCH trival -resend 2/2] lib: clean up put_cpu_var usage Tejun Heo <tj@kernel.org> - 2016-09-28 01:20 +0200
Re: [PATCH trival -resend 2/2] lib: clean up put_cpu_var usage David Miller <davem@davemloft.net> - 2016-09-28 04:20 +0200
Re: [PATCH trival -resend 1/2] bpf: clean up put_cpu_var usage Alexei Starovoitov <alexei.starovoitov@gmail.com> - 2016-09-28 01:10 +0200
Re: [PATCH trival -resend 1/2] bpf: clean up put_cpu_var usage Tejun Heo <tj@kernel.org> - 2016-09-28 01:20 +0200
Re: [PATCH trival -resend 1/2] bpf: clean up put_cpu_var usage David Miller <davem@davemloft.net> - 2016-09-28 04:20 +0200
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