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| author | Tejun Heo <tj@kernel.org> | 2013-12-05 18:28:04 +0100 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-12-05 18:28:04 +0100 |
| commit | 2da8ca822d49c8b8781800ad155aaa00e7bb5f1a (patch) | |
| tree | 9ec6b0a7a009d76d0c607640eae64d3e9ed666a9 /kernel/cpuset.c | |
| parent | cgroup: attach cgroup_open_file to all cgroup files (diff) | |
| download | linux-2da8ca822d49c8b8781800ad155aaa00e7bb5f1a.tar.xz linux-2da8ca822d49c8b8781800ad155aaa00e7bb5f1a.zip | |
cgroup: replace cftype->read_seq_string() with cftype->seq_show()
In preparation of conversion to kernfs, cgroup file handling is
updated so that it can be easily mapped to kernfs. This patch
replaces cftype->read_seq_string() with cftype->seq_show() which is
not limited to single_open() operation and will map directcly to
kernfs seq_file interface.
The conversions are mechanical. As ->seq_show() doesn't have @css and
@cft, the functions which make use of them are converted to use
seq_css() and seq_cft() respectively. In several occassions, e.f. if
it has seq_string in its name, the function name is updated to fit the
new method better.
This patch does not introduce any behavior changes.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Aristeu Rozanski <arozansk@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Acked-by: Li Zefan <lizefan@huawei.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Diffstat (limited to 'kernel/cpuset.c')
| -rw-r--r-- | kernel/cpuset.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c index 032929f91648..4410ac6a55f1 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -1732,12 +1732,10 @@ out_unlock: * and since these maps can change value dynamically, one could read * gibberish by doing partial reads while a list was changing. */ -static int cpuset_common_read_seq_string(struct cgroup_subsys_state *css, - struct cftype *cft, - struct seq_file *sf) +static int cpuset_common_seq_show(struct seq_file *sf, void *v) { - struct cpuset *cs = css_cs(css); - cpuset_filetype_t type = cft->private; + struct cpuset *cs = css_cs(seq_css(sf)); + cpuset_filetype_t type = seq_cft(sf)->private; ssize_t count; char *buf, *s; int ret = 0; @@ -1824,7 +1822,7 @@ static s64 cpuset_read_s64(struct cgroup_subsys_state *css, struct cftype *cft) static struct cftype files[] = { { .name = "cpus", - .read_seq_string = cpuset_common_read_seq_string, + .seq_show = cpuset_common_seq_show, .write_string = cpuset_write_resmask, .max_write_len = (100U + 6 * NR_CPUS), .private = FILE_CPULIST, @@ -1832,7 +1830,7 @@ static struct cftype files[] = { { .name = "mems", - .read_seq_string = cpuset_common_read_seq_string, + .seq_show = cpuset_common_seq_show, .write_string = cpuset_write_resmask, .max_write_len = (100U + 6 * MAX_NUMNODES), .private = FILE_MEMLIST, |