perf: Remove get_perf_callchain() init_nr argument

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[ Upstream commit e649bcda25 ]

The 'init_nr' argument has double duty: it's used to initialize both the
number of contexts and the number of stack entries.  That's confusing
and the callers always pass zero anyway.  Hard code the zero.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Namhyung Kim <Namhyung@kernel.org>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/r/20250820180428.259565081@kernel.org
Stable-dep-of: 23f852daa4 ("bpf: Fix stackmap overflow check in __bpf_get_stackid()")
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Josh Poimboeuf 2025-08-20 14:03:39 -04:00 • committed by Greg Kroah-Hartman

parent f5a4950ad2

commit d6d416f3b8

4 changed files with 10 additions and 10 deletions

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2

include/linux/perf_event.h

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4

kernel/bpf/stackmap.c

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12

kernel/events/callchain.c

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2

kernel/events/core.c

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