Commit bcea02b0 authored by Wang Wensheng's avatar Wang Wensheng Committed by Steven Rostedt (Google)
Browse files

ftrace: Optimize the allocation for mcount entries 

If we can't allocate this size, try something smaller with half of the
size. Its order should be decreased by one instead of divided by two.

Link: https://lkml.kernel.org/r/20221109094434.84046-3-wangwensheng4@huawei.com



Cc: <mhiramat@kernel.org>
Cc: <mark.rutland@arm.com>
Cc: stable@vger.kernel.org
Fixes: a7900875 ("ftrace: Allocate the mcount record pages as groups")
Signed-off-by: default avatarWang Wensheng <wangwensheng4@huawei.com>
Signed-off-by: default avatarSteven Rostedt (Google) <rostedt@goodmis.org>
parent 08948cae

kernel/trace/ftrace.c

+1 −1
Original line number Diff line number Diff line
@@ -3190,7 +3190,7 @@ static int ftrace_allocate_records(struct ftrace_page *pg, int count) 
		/* if we can't allocate this size, try something smaller */

		if (!order)

			return -ENOMEM;

		order >>= 1;

		order--;

		goto again;

	}