This patch set implements two speed ups for uprobe/uretprobe runtime execution path for some common scenarios: BPF-only uprobes (patches #1 and #2) and system-wide (non-PID-specific) uprobes (patch #3). Please see individual patches for details.
v1->v2: - rebased onto trace/core branch of tracing tree, hopefully I guessed right; - simplified user_cpu_buffer usage further (Oleg Nesterov); - simplified patch #3, just moved speculative check outside of lock (Oleg); - added Reviewed-by from Jiri Olsa. Andrii Nakryiko (3): uprobes: encapsulate preparation of uprobe args buffer uprobes: prepare uprobe args buffer lazily uprobes: add speculative lockless system-wide uprobe filter check kernel/trace/trace_uprobe.c | 103 +++++++++++++++++++++--------------- 1 file changed, 59 insertions(+), 44 deletions(-) -- 2.43.0
