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621a5f7ad9
Its a bit odd that debugfs_create_bool() takes 'u32 *' as an argument,
when all it needs is a boolean pointer.
It would be better to update this API to make it accept 'bool *'
instead, as that will make it more consistent and often more convenient.
Over that bool takes just a byte.
That required updates to all user sites as well, in the same commit
updating the API. regmap core was also using
debugfs_{read|write}_file_bool(), directly and variable types were
updated for that to be bool as well.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
#include <linux/fault-inject.h>
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#include <linux/slab.h>
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static struct {
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struct fault_attr attr;
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bool ignore_gfp_wait;
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bool cache_filter;
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} failslab = {
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.attr = FAULT_ATTR_INITIALIZER,
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.ignore_gfp_wait = true,
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.cache_filter = false,
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};
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bool should_failslab(size_t size, gfp_t gfpflags, unsigned long cache_flags)
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{
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if (gfpflags & __GFP_NOFAIL)
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return false;
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if (failslab.ignore_gfp_wait && (gfpflags & __GFP_WAIT))
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return false;
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if (failslab.cache_filter && !(cache_flags & SLAB_FAILSLAB))
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return false;
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return should_fail(&failslab.attr, size);
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}
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static int __init setup_failslab(char *str)
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{
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return setup_fault_attr(&failslab.attr, str);
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}
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__setup("failslab=", setup_failslab);
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#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
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static int __init failslab_debugfs_init(void)
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{
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struct dentry *dir;
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umode_t mode = S_IFREG | S_IRUSR | S_IWUSR;
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dir = fault_create_debugfs_attr("failslab", NULL, &failslab.attr);
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if (IS_ERR(dir))
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return PTR_ERR(dir);
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if (!debugfs_create_bool("ignore-gfp-wait", mode, dir,
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&failslab.ignore_gfp_wait))
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goto fail;
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if (!debugfs_create_bool("cache-filter", mode, dir,
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&failslab.cache_filter))
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goto fail;
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return 0;
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fail:
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debugfs_remove_recursive(dir);
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return -ENOMEM;
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}
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late_initcall(failslab_debugfs_init);
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#endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */
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