From e530ca52e022c49b30bc87cd156e6db4cbddc5c1 Mon Sep 17 00:00:00 2001 From: Luming Yu Date: Fri, 29 Sep 2017 22:03:02 +0800 Subject: [PATCH v1 4/9] early pt: boot option early_pt_buf_len for early pt buffer size setup Signed-off-by: Luming Yu --- arch/x86/events/intel/early_pt.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/x86/events/intel/early_pt.c b/arch/x86/events/intel/early_pt.c index 16ed03c..36b80b1 100644 --- a/arch/x86/events/intel/early_pt.c +++ b/arch/x86/events/intel/early_pt.c @@ -348,3 +348,11 @@ static int __init early_pt_enable(char *str) } early_param("early_pt", early_pt_enable); +static int __init early_pt_buf_len_setup(char *str) +{ + unsigned size = memparse(str, &str); + if (get_order(size) > early_pt_buffer_order) + early_pt_buffer_order = get_order(size); + return 0; +} +early_param("early_pt_buf_len", early_pt_buf_len_setup); -- 2.7.5