perf: Have get_perf_callchain() return NULL if crosstask and user are set

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[ Upstream commit 153f9e74de ]

get_perf_callchain() doesn't support cross-task unwinding for user space
stacks, have it return NULL if both the crosstask and user arguments are
set.

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>
Link: https://lore.kernel.org/r/20250820180428.426423415@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Josh Poimboeuf 2025-08-20 14:03:40 -04:00 • committed by Greg Kroah-Hartman

parent 8d79f96e47

commit 8d33b133b8

1 changed files with 5 additions and 5 deletions

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kernel/events/callchain.c

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