Nikhil V
158c40e5ec
In case of hibernation with compression enabled, 'n' number of pages will be compressed to 'x' number of pages before being written to the disk. Keep a note of these compressed block counts so that bootloader can directly read 'x' pages and pass it on to the decompressor. An array will be maintained which will hold the count of these compressed blocks and later on written to the the disk as part of the hibernation image save process. The vendor hook '__tracepoint_android_vh_hibernated_do_mem_alloc' does the required memory allocations, for example, the array which is dynamically allocated based on the snapshot image size so as to hold the compressed block counts etc. This memory is later freed as part of PM_POST_HIBERNATION notifier call. The vendor hook '__tracepoint_android_vh_hibernate_save_cmp_len' saves the compressed block counts to the array which is later written to the disk. Bug: 335581841 Change-Id: I574b641e2d9f4cd503c7768a66a7be3142c2686b Signed-off-by: Nikhil V <quic_nprakash@quicinc.com>
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM bl_hib
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#define TRACE_INCLUDE_PATH trace/hooks
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#if !defined(_TRACE_HOOK_S2D_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_HOOK_S2D_H
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#include <trace/hooks/vendor_hooks.h>
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struct file;
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DECLARE_HOOK(android_vh_check_hibernation_swap,
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TP_PROTO(struct file *resume_block_file, bool *hib_swap),
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TP_ARGS(resume_block_file, hib_swap));
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DECLARE_HOOK(android_vh_save_cpu_resume,
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TP_PROTO(u64 *addr, u64 phys_addr),
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TP_ARGS(addr, phys_addr));
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DECLARE_HOOK(android_vh_save_hib_resume_bdev,
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TP_PROTO(struct file *hib_resume_bdev_file),
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TP_ARGS(hib_resume_bdev_file));
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DECLARE_HOOK(android_vh_encrypt_page,
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TP_PROTO(void *buf),
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TP_ARGS(buf));
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DECLARE_HOOK(android_vh_init_aes_encrypt,
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TP_PROTO(void *unused),
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TP_ARGS(unused));
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DECLARE_HOOK(android_vh_skip_swap_map_write,
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TP_PROTO(bool *skip),
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TP_ARGS(skip));
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DECLARE_HOOK(android_vh_post_image_save,
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TP_PROTO(unsigned short root_swap),
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TP_ARGS(root_swap));
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DECLARE_HOOK(android_vh_hibernated_do_mem_alloc,
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TP_PROTO(unsigned long nr_pages, unsigned int swsusp_header_flags,
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int *ret),
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TP_ARGS(nr_pages, swsusp_header_flags, ret));
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DECLARE_HOOK(android_vh_hibernate_save_cmp_len,
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TP_PROTO(size_t cmp_len),
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TP_ARGS(cmp_len));
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#endif /* _TRACE_HOOK_S2D_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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