From 5aaba36318e5995e8c95d077a46d9a4d00fcc1cd Mon Sep 17 00:00:00 2001 From: Sudeep Holla Date: Tue, 30 Sep 2014 14:48:22 +0100 Subject: cpumask: factor out show_cpumap into separate helper function Many sysfs *_show function use cpu{list,mask}_scnprintf to copy cpumap to the buffer aligned to PAGE_SIZE, append '\n' and '\0' to return null terminated buffer with newline. This patch creates a new helper function cpumap_print_to_pagebuf in cpumask.h using newly added bitmap_print_to_pagebuf and consolidates most of those sysfs functions using the new helper function. Signed-off-by: Sudeep Holla Suggested-by: Stephen Boyd Tested-by: Stephen Boyd Acked-by: "Rafael J. Wysocki" Acked-by: Bjorn Helgaas Acked-by: Peter Zijlstra (Intel) Cc: Greg Kroah-Hartman Cc: x86@kernel.org Cc: linux-acpi@vger.kernel.org Cc: linux-pci@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- include/linux/cpumask.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'include/linux/cpumask.h') diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h index 0a9a6da21e74..b950e9d6008b 100644 --- a/include/linux/cpumask.h +++ b/include/linux/cpumask.h @@ -803,6 +803,23 @@ static inline const struct cpumask *get_cpu_mask(unsigned int cpu) } #endif /* NR_CPUS > BITS_PER_LONG */ +/** + * cpumap_print_to_pagebuf - copies the cpumask into the buffer either + * as comma-separated list of cpus or hex values of cpumask + * @list: indicates whether the cpumap must be list + * @mask: the cpumask to copy + * @buf: the buffer to copy into + * + * Returns the length of the (null-terminated) @buf string, zero if + * nothing is copied. + */ +static inline ssize_t +cpumap_print_to_pagebuf(bool list, char *buf, const struct cpumask *mask) +{ + return bitmap_print_to_pagebuf(list, buf, cpumask_bits(mask), + nr_cpumask_bits); +} + /* * * From here down, all obsolete. Use cpumask_ variants! -- cgit v1.2.3