diff mbox series

[bpf-next,v5,3/9] sched-ext: Allow sched-ext progs to use private stack

Message ID 20241017223154.3176602-1-yonghong.song@linux.dev (mailing list archive)
State Superseded
Delegated to: BPF
Headers show
Series bpf: Support private stack for bpf progs | expand

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netdev/series_format success Posting correctly formatted
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netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
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Commit Message

Yonghong Song Oct. 17, 2024, 10:31 p.m. UTC 
Allow sched-ext struct_ops bpf progs to use private stack. In later
jit, there will be some recursion checking if private stack is used
such that if the same prog is run again in the same cpu, then
that second prog run will be skipped.

Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
---
 kernel/sched/ext.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index 3cd7c50a51c5..f186cf7cac90 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -5370,10 +5370,16 @@  bpf_scx_get_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog)
 	}
 }
 
+static bool bpf_scx_priv_stack_allowed(void)
+{
+	return true;
+}
+
 static const struct bpf_verifier_ops bpf_scx_verifier_ops = {
 	.get_func_proto = bpf_scx_get_func_proto,
 	.is_valid_access = bpf_scx_is_valid_access,
 	.btf_struct_access = bpf_scx_btf_struct_access,
+	.priv_stack_allowed = bpf_scx_priv_stack_allowed,
 };
 
 static int bpf_scx_init_member(const struct btf_type *t,