mm/shuffle: convert module_param_call to module_param_cb
module_param_call is now completely consistent with module_param_cb, so there is no need to keep two macros. Convert module_param_call to module_param_cb since former is obsolete and latter is more kernel-ish. Link: https://lkml.kernel.org/r/20220909083947.3595610-1-liushixin2@huawei.com Signed-off-by: Liu Shixin <liushixin2@huawei.com> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Liu Shixin <liushixin2@huawei.com> Cc: Paul Russel <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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mm/shuffle.c
21
mm/shuffle.c
@ -12,23 +12,22 @@
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DEFINE_STATIC_KEY_FALSE(page_alloc_shuffle_key);
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static bool shuffle_param;
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static int shuffle_show(char *buffer, const struct kernel_param *kp)
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{
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return sprintf(buffer, "%c\n", shuffle_param ? 'Y' : 'N');
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}
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static __meminit int shuffle_store(const char *val,
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static __meminit int shuffle_param_set(const char *val,
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const struct kernel_param *kp)
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{
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int rc = param_set_bool(val, kp);
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if (rc < 0)
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return rc;
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if (shuffle_param)
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if (param_set_bool(val, kp))
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return -EINVAL;
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if (*(bool *)kp->arg)
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static_branch_enable(&page_alloc_shuffle_key);
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return 0;
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}
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module_param_call(shuffle, shuffle_store, shuffle_show, &shuffle_param, 0400);
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static const struct kernel_param_ops shuffle_param_ops = {
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.set = shuffle_param_set,
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.get = param_get_bool,
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};
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module_param_cb(shuffle, &shuffle_param_ops, &shuffle_param, 0400);
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/*
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* For two pages to be swapped in the shuffle, they must be free (on a
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