[PATCH 3/5] sound: query dynamic DEBUG_PAGEALLOC setting
From: Joonsoo Kim <hidden>
Date: 2016-02-04 05:58:19
Also in:
linux-mm, lkml
Subsystem:
sound, the rest · Maintainers:
Jaroslav Kysela, Takashi Iwai, Linus Torvalds
We can disable debug_pagealloc processing even if the code is complied with CONFIG_DEBUG_PAGEALLOC. This patch changes the code to query whether it is enabled or not in runtime. Signed-off-by: Joonsoo Kim <redacted> --- sound/drivers/pcsp/pcsp.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/sound/drivers/pcsp/pcsp.c b/sound/drivers/pcsp/pcsp.c
index 27e25bb..72e2d00 100644
--- a/sound/drivers/pcsp/pcsp.c
+++ b/sound/drivers/pcsp/pcsp.c@@ -14,6 +14,7 @@ #include <linux/input.h> #include <linux/delay.h> #include <linux/bitops.h> +#include <linux/mm.h> #include "pcsp_input.h" #include "pcsp.h"
@@ -148,11 +149,11 @@ static int alsa_card_pcsp_init(struct device *dev) return err; } -#ifdef CONFIG_DEBUG_PAGEALLOC /* Well, CONFIG_DEBUG_PAGEALLOC makes the sound horrible. Lets alert */ - printk(KERN_WARNING "PCSP: CONFIG_DEBUG_PAGEALLOC is enabled, " - "which may make the sound noisy.\n"); -#endif + if (debug_pagealloc_enabled()) { + printk(KERN_WARNING "PCSP: CONFIG_DEBUG_PAGEALLOC is enabled, " + "which may make the sound noisy.\n"); + } return 0; }
--
1.9.1
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