ftrace: Optimize the allocation for mcount entries
stable inclusion from stable-v5.10.156 commit 6ed60c60ec9050345f024b7e9c7c0db6e8cd31d2 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7MCG1 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=6ed60c60ec9050345f024b7e9c7c0db6e8cd31d2 -------------------------------- commit bcea02b0 upstream. 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: NWang Wensheng <wangwensheng4@huawei.com> Signed-off-by: NSteven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Nsanglipeng <sanglipeng1@jd.com> (cherry picked from commit f3229142)
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