[PATCH v1 4/9] early pt: boot option early_pt_buf_len

[PATCH v1 4/9] early pt: boot option early_pt_buf_len

[Luming Yu]

[-- Attachment #1: Type: text/plain, Size: 79 bytes --]

for early pt buffer size setup

Signed-off-by: Luming Yu <luming.yu@intel.com>

[-- Attachment #2: 0004-boot-option-early_pt_buf_len-for-early-pt-buffer-siz.patch --]
[-- Type: application/octet-stream, Size: 949 bytes --]

From e530ca52e022c49b30bc87cd156e6db4cbddc5c1 Mon Sep 17 00:00:00 2001
From: Luming Yu <luming.yu@intel.com>
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 <luming.yu@intel.com>
---
 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