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/linux-6.3-rc2/Documentation/admin-guide/
A Dpstore-blk.rst3 pstore block oops/panic logger
9 pstore block (pstore/blk) is an oops/panic logger that writes its logs to a
13 mount -t pstore pstore /sys/fs/pstore
16 pstore block concepts
19 pstore/blk provides efficient configuration method for pstore/blk, which
97 */sys/fs/pstore/pmsg-pstore-blk-0*.
108 available in */sys/fs/pstore/console-pstore-blk-0*.
121 combined and available in */sys/fs/pstore/ftrace-pstore-blk-0*.
126 # mount -t pstore pstore /sys/fs/pstore
131 # mount -t pstore pstore /sys/fs/pstore
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A Dramoops.rst27 Typically the default value of ``mem_type=0`` should be used as that sets the pstore
29 ``pgprot_noncached``, which only works on some platforms. This is because pstore
138 The dump data can be read from the pstore filesystem. The format for these
140 a stored record from RAM, simply unlink the respective pstore file.
150 # echo 1 > /sys/kernel/debug/pstore/record_ftrace
153 # mount -t pstore pstore /mnt/
A Dindex.rst48 pstore-blk
A Dkernel-parameters.txt4571 pstore.backend= Specify the name of the pstore backend to use
/linux-6.3-rc2/drivers/md/
A Ddm-snap-persistent.c105 struct pstore { struct
170 static int alloc_area(struct pstore *ps) in alloc_area() argument
578 struct pstore *ps = get_info(store); in persistent_usage()
594 struct pstore *ps = get_info(store); in persistent_dtr()
615 struct pstore *ps = get_info(store); in persistent_read_metadata()
677 struct pstore *ps = get_info(store); in persistent_prepare_exception()
703 struct pstore *ps = get_info(store); in persistent_commit_exception()
767 struct pstore *ps = get_info(store); in persistent_prepare_merge()
813 struct pstore *ps = get_info(store); in persistent_commit_merge()
844 struct pstore *ps = get_info(store); in persistent_drop_snapshot()
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/linux-6.3-rc2/fs/pstore/
A DKconfig8 persistent storage via "pstore" filesystem that can
9 be mounted as /dev/pstore. Only useful if you have
10 a platform level driver that registers with pstore to
22 Defines default size of pstore kernel log storage.
77 prompt "Default pstore compression algorithm"
81 This change be changed at boot with "pstore.compress=..." on
84 Currently, pstore has support for 6 compression algorithms:
123 When the option is enabled, pstore will log all kernel
131 When the option is enabled, pstore will export a character
170 The common layer for pstore/blk (and pstore/ram in the future)
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A DMakefile6 obj-$(CONFIG_PSTORE) += pstore.o
8 pstore-objs += inode.o platform.o
9 pstore-$(CONFIG_PSTORE_FTRACE) += ftrace.o
11 pstore-$(CONFIG_PSTORE_PMSG) += pmsg.o
A Dram.c101 struct pstore_info pstore; member
440 .pstore = {
810 cxt->pstore.data = cxt; in ramoops_probe()
817 cxt->pstore.flags = 0; in ramoops_probe()
836 cxt->pstore.buf = kzalloc(cxt->pstore.bufsize, GFP_KERNEL); in ramoops_probe()
837 if (!cxt->pstore.buf) { in ramoops_probe()
869 kfree(cxt->pstore.buf); in ramoops_probe()
871 cxt->pstore.bufsize = 0; in ramoops_probe()
882 pstore_unregister(&cxt->pstore); in ramoops_remove()
884 kfree(cxt->pstore.buf); in ramoops_remove()
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A Dzone.c138 struct pstore_info pstore; member
1102 .pstore = {
1371 cxt->pstore.buf = kzalloc(cxt->pstore.bufsize, GFP_KERNEL); in register_pstore_zone()
1372 if (!cxt->pstore.buf) { in register_pstore_zone()
1377 cxt->pstore.data = cxt; in register_pstore_zone()
1414 kfree(cxt->pstore.buf); in register_pstore_zone()
1415 cxt->pstore.buf = NULL; in register_pstore_zone()
1416 cxt->pstore.bufsize = 0; in register_pstore_zone()
1448 kfree(cxt->pstore.buf); in unregister_pstore_zone()
1449 cxt->pstore.buf = NULL; in unregister_pstore_zone()
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/linux-6.3-rc2/Documentation/ABI/testing/
A Dpstore1 What: /sys/fs/pstore/...
2 What: /dev/pstore/...
15 # mount -t pstore -o kmsg_bytes=8000 - /sys/fs/pstore
17 $ ls -l /sys/fs/pstore/
31 $ rm /sys/fs/pstore/dmesg-erst-1
33 The expectation is that all files in /sys/fs/pstore/
46 set by passing the pstore.backend= argument to the kernel at
/linux-6.3-rc2/tools/testing/selftests/pstore/
A Dpstore_post_reboot_tests23 mount_info=`grep pstore /proc/mounts`
28 mount none /sys/fs/pstore -t pstore
30 mount_point=`grep pstore /proc/mounts | cut -d' ' -f2 | head -n1`
A Dcommon_tests77 backend=`cat /sys/module/pstore/parameters/backend`
/linux-6.3-rc2/drivers/firmware/efi/
A DKconfig11 tristate "Register efivars backend for pstore"
16 Say Y here to enable use efivars as a backend to pstore. This
18 else supported by pstore to EFI variables.
21 bool "Disable using efivars as a pstore backend by default"
26 backend for pstore by default. This setting can be overridden
A DMakefile21 obj-$(CONFIG_EFI_VARS_PSTORE) += efi-pstore.o
/linux-6.3-rc2/tools/testing/selftests/
A DMakefile62 TARGETS += pstore
199 $(MAKE) -C pstore run_crash
/linux-6.3-rc2/Documentation/admin-guide/mm/
A Dshrinker_debugfs.rst28 mm-zspool:zram0-34 sb-hugetlbfs-17 sb-pstore-31 sb-tmpfs-44
/linux-6.3-rc2/fs/
A DMakefile136 obj-$(CONFIG_PSTORE) += pstore/
A DKconfig321 source "fs/pstore/Kconfig"
/linux-6.3-rc2/drivers/mtd/
A DKconfig177 tristate "Log panic/oops to an MTD buffer based on pstore"
182 mounting pstore filesystem.
/linux-6.3-rc2/Documentation/devicetree/bindings/reserved-memory/
A Dramoops.yaml12 is named "ramoops" after the backend, rather than "pstore" which is the
/linux-6.3-rc2/arch/arm64/boot/dts/hisilicon/
A Dhi6220-hikey.dts36 * 0x21f0,0000 - 0x21ff,ffff: pstore/ramoops buffer
/linux-6.3-rc2/drivers/platform/chrome/
A DKconfig40 tristate "Chrome OS pstore support"
/linux-6.3-rc2/kernel/power/
A DKconfig234 captured in pstore device for inspection in subsequent
/linux-6.3-rc2/
A DMAINTAINERS16888 T: git git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/pstore
16890 F: Documentation/admin-guide/pstore-blk.rst
16893 F: drivers/firmware/efi/efi-pstore.c
16894 F: fs/pstore/
16895 F: include/linux/pstore*
16896 K: \b(pstore|ramoops)

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