mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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dd336c554d
fix memory leak introduced by the patch 6e03a201bb:
firmware: speed up request_firmware()
1. vfree won't release pages there were allocated explicitly and mapped
using vmap. The memory has to be vunmap-ed and the pages needs
to be freed explicitly
2. page array is moved into the 'struct
firmware' so that we can free it from release_firmware()
and not only in fw_dev_release()
The fix doesn't break the firmware load speed.
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Ming Lei <tom.leiming@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Singed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
#ifndef _LINUX_FIRMWARE_H
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#define _LINUX_FIRMWARE_H
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/compiler.h>
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#include <linux/gfp.h>
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#define FW_ACTION_NOHOTPLUG 0
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#define FW_ACTION_HOTPLUG 1
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struct firmware {
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size_t size;
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const u8 *data;
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struct page **pages;
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};
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struct device;
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struct builtin_fw {
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char *name;
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void *data;
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unsigned long size;
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};
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/* We have to play tricks here much like stringify() to get the
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__COUNTER__ macro to be expanded as we want it */
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#define __fw_concat1(x, y) x##y
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#define __fw_concat(x, y) __fw_concat1(x, y)
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#define DECLARE_BUILTIN_FIRMWARE(name, blob) \
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DECLARE_BUILTIN_FIRMWARE_SIZE(name, &(blob), sizeof(blob))
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#define DECLARE_BUILTIN_FIRMWARE_SIZE(name, blob, size) \
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static const struct builtin_fw __fw_concat(__builtin_fw,__COUNTER__) \
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__used __section(.builtin_fw) = { name, blob, size }
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#if defined(CONFIG_FW_LOADER) || (defined(CONFIG_FW_LOADER_MODULE) && defined(MODULE))
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int request_firmware(const struct firmware **fw, const char *name,
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struct device *device);
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int request_firmware_nowait(
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struct module *module, int uevent,
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const char *name, struct device *device, gfp_t gfp, void *context,
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void (*cont)(const struct firmware *fw, void *context));
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void release_firmware(const struct firmware *fw);
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#else
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static inline int request_firmware(const struct firmware **fw,
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const char *name,
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struct device *device)
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{
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return -EINVAL;
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}
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static inline int request_firmware_nowait(
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struct module *module, int uevent,
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const char *name, struct device *device, gfp_t gfp, void *context,
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void (*cont)(const struct firmware *fw, void *context))
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{
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return -EINVAL;
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}
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static inline void release_firmware(const struct firmware *fw)
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{
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}
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#endif
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#endif
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