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taskstats: remove redundant MM_STAT config check

Browse source 
Userspace does not have access to MM_STAT configs, so remove redundant
config checks.

Change-Id: I0ec0807a1e62bd5932f01ed285f2175f27900e37
Signed-off-by: Prakash Gupta <guptap@codeaurora.org>
This commit is contained in:
Prakash Gupta 2020-06-18 12:41:59 +05:30
commit 9d12d29a2d
3 changed files with 5 additions and 5 deletions
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4
include/uapi/linux/sysstats.h
View file

@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
/*
* Copyright (c) 2019, The Linux Foundation. All rights reserved.
* Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
*/
#ifndef _LINUX_SYSSTATS_H
@ -25,9 +25,7 @@ struct sys_memstats {
__u64 zram_compressed;
__u64 swap_used;
__u64 swap_total;
#ifdef CONFIG_MM_STAT_UNRECLAIMABLE_PAGES
__u64 unreclaimable;
#endif
__u64 buffer;
__u64 slab_reclaimable;
__u64 slab_unreclaimable;

2
include/uapi/linux/taskstats.h
View file

@ -179,9 +179,7 @@ struct taskstats2 {
__u64 file_rss; /* KB */
__u64 swap_rss; /* KB */
__u64 shmem_rss; /* KB */
#ifdef CONFIG_MM_STAT_UNRECLAIMABLE_PAGES
__u64 unreclaimable; /* KB */
#endif
/* version 1 ends here */
};

4
kernel/taskstats.c
View file

@ -489,6 +489,8 @@ static void sysstats_build(struct sys_memstats *stats)
#ifdef CONFIG_MM_STAT_UNRECLAIMABLE_PAGES
stats->unreclaimable =
K(global_node_page_state(NR_UNRECLAIMABLE_PAGES));
#else
stats->unreclaimable = 0;
#endif
stats->buffer = K(i.bufferram);
stats->swapcache = K(total_swapcache_pages());
@ -682,6 +684,8 @@ static int taskstats2_cmd_attr_pid(struct genl_info *info)
#ifdef CONFIG_MM_STAT_UNRECLAIMABLE_PAGES
stats->unreclaimable =
K(get_mm_counter(p->mm, MM_UNRECLAIMABLE));
#else
stats->unreclaimable = 0;
#endif
#undef K
task_unlock(p);