From 167e6cf62979df03513898966f9227847d192327 Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Thu, 24 Jul 2008 16:27:52 -0700 Subject: xen-balloon: fix up sysfs issues 1. Set the class so it doesn't clash with the normal memory class 2. Fix up the sysfs show functions to match the new prototype 3. Clean up use of memparse Signed-off-by: Jeremy Fitzhardinge Cc: "viets@work.de" Cc: Andi Kleen Signed-off-by: Ingo Molnar --- drivers/xen/balloon.c | 27 ++++++++++++--------------- 1 file changed, 12 insertions(+), 15 deletions(-) (limited to 'drivers/xen') diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index d4427cb8697..cdec2d843e4 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -60,7 +60,7 @@ #define PAGES2KB(_p) ((_p)<<(PAGE_SHIFT-10)) -#define BALLOON_CLASS_NAME "memory" +#define BALLOON_CLASS_NAME "xen_memory" struct balloon_stats { /* We aim for 'current allocation' == 'target allocation'. */ @@ -588,12 +588,13 @@ static void balloon_release_driver_page(struct page *page) } -#define BALLOON_SHOW(name, format, args...) \ - static ssize_t show_##name(struct sys_device *dev, \ - char *buf) \ - { \ - return sprintf(buf, format, ##args); \ - } \ +#define BALLOON_SHOW(name, format, args...) \ + static ssize_t show_##name(struct sys_device *dev, \ + struct sysdev_attribute *attr, \ + char *buf) \ + { \ + return sprintf(buf, format, ##args); \ + } \ static SYSDEV_ATTR(name, S_IRUGO, show_##name, NULL) BALLOON_SHOW(current_kb, "%lu\n", PAGES2KB(balloon_stats.current_pages)); @@ -604,7 +605,8 @@ BALLOON_SHOW(hard_limit_kb, (balloon_stats.hard_limit!=~0UL) ? PAGES2KB(balloon_stats.hard_limit) : 0); BALLOON_SHOW(driver_kb, "%lu\n", PAGES2KB(balloon_stats.driver_pages)); -static ssize_t show_target_kb(struct sys_device *dev, char *buf) +static ssize_t show_target_kb(struct sys_device *dev, struct sysdev_attribute *attr, + char *buf) { return sprintf(buf, "%lu\n", PAGES2KB(balloon_stats.target_pages)); } @@ -614,19 +616,14 @@ static ssize_t store_target_kb(struct sys_device *dev, const char *buf, size_t count) { - char memstring[64], *endchar; + char *endchar; unsigned long long target_bytes; if (!capable(CAP_SYS_ADMIN)) return -EPERM; - if (count <= 1) - return -EBADMSG; /* runt */ - if (count > sizeof(memstring)) - return -EFBIG; /* too long */ - strcpy(memstring, buf); + target_bytes = memparse(buf, &endchar); - target_bytes = memparse(memstring, &endchar); balloon_set_new_target(target_bytes >> PAGE_SHIFT); return count; -- cgit v1.2.3