sys/linux: add Damon description

* sys/linux/damon.txt: initial description

description of DAMON's interface mounted in debugfs: target_ids, attrs, init_regions, monitor_on

* sys/linux/damon.txt: additional damon interface description added

added DAMON interface descriptions for schemes, kdamond_pid, mk_contexts, rm_contexts
prefix of all the files with damon to avoid colliding naming

* sys/linux/damon.txt: standard copyright statement added

* sys/linux/damon.txt.const: const file of sys/linux/damon.txt added

* sys/linux/damon.txt: type fix of pid to fmt

* dashboard/config/linux/bits/subsystems.yml: damon configs added for Syzbot

* dashboard/config/linux: generated kernel configs with added damon config

* sys/linux/damon.txt: fmt type fix

* sys/linux/damon.txt: read and close syscalls removed
write and read mk_contexts summarized into one syscall
some refining of syscall interfaces

13 files changed, 125 insertions, 11 deletions

diff --git a/dashboard/config/linux/bits/subsystems.yml b/dashboard/config/linux/bits/subsystems.yml
index 72cdcb907..8f8da7f5c 100644
--- a/dashboard/config/linux/bits/subsystems.yml
+++ b/dashboard/config/linux/bits/subsystems.yml
@@ -538,3 +538,6 @@ config:
  - THERMAL_NETLINK: [v5.8]
  - VMWARE_VMCI: [x86_64]
  - W1: n
+ - DAMON
+ - DAMON-VADDR
+ - DAMON-DBGFS
diff --git a/dashboard/config/linux/upstream-apparmor-kasan.config b/dashboard/config/linux/upstream-apparmor-kasan.config
index 57e23a9f3..c688566f8 100644
--- a/dashboard/config/linux/upstream-apparmor-kasan.config
+++ b/dashboard/config/linux/upstream-apparmor-kasan.config
@@ -999,6 +999,7 @@ CONFIG_ZSMALLOC=y
 # CONFIG_ZSMALLOC_STAT is not set
 CONFIG_GENERIC_EARLY_IOREMAP=y
 # CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
+CONFIG_PAGE_IDLE_FLAG=y
 # CONFIG_IDLE_PAGE_TRACKING is not set
 CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
 CONFIG_ARCH_HAS_PTE_DEVMAP=y
@@ -1022,7 +1023,9 @@ CONFIG_SECRETMEM=y
 #
 # Data Access Monitoring
 #
-# CONFIG_DAMON is not set
+CONFIG_DAMON=y
+CONFIG_DAMON_VADDR=y
+CONFIG_DAMON_DBGFS=y
 # end of Data Access Monitoring
 # end of Memory Management options
 
diff --git a/dashboard/config/linux/upstream-arm-kasan.config b/dashboard/config/linux/upstream-arm-kasan.config
index de9a4394a..df3a8bdb9 100644
--- a/dashboard/config/linux/upstream-arm-kasan.config
+++ b/dashboard/config/linux/upstream-arm-kasan.config
@@ -895,6 +895,7 @@ CONFIG_ZBUD=y
 CONFIG_ZSMALLOC=y
 # CONFIG_ZSMALLOC_STAT is not set
 CONFIG_GENERIC_EARLY_IOREMAP=y
+CONFIG_PAGE_IDLE_FLAG=y
 # CONFIG_IDLE_PAGE_TRACKING is not set
 CONFIG_HMM_MIRROR=y
 CONFIG_PERCPU_STATS=y
@@ -905,7 +906,9 @@ CONFIG_KMAP_LOCAL=y
 #
 # Data Access Monitoring
 #
-# CONFIG_DAMON is not set
+CONFIG_DAMON=y
+CONFIG_DAMON_VADDR=y
+CONFIG_DAMON_DBGFS=y
 # end of Data Access Monitoring
 # end of Memory Management options
 
@@ -6821,7 +6824,7 @@ CONFIG_DEBUG_MISC=y
 #
 # Memory Debugging
 #
-# CONFIG_PAGE_EXTENSION is not set
+CONFIG_PAGE_EXTENSION=y
 # CONFIG_PAGE_OWNER is not set
 CONFIG_PAGE_POISONING=y
 # CONFIG_DEBUG_PAGE_REF is not set
diff --git a/dashboard/config/linux/upstream-arm64-kasan.config b/dashboard/config/linux/upstream-arm64-kasan.config
index a20ab89aa..2689ae138 100644
--- a/dashboard/config/linux/upstream-arm64-kasan.config
+++ b/dashboard/config/linux/upstream-arm64-kasan.config
@@ -957,6 +957,7 @@ CONFIG_ZSMALLOC=y
 # CONFIG_ZSMALLOC_STAT is not set
 CONFIG_GENERIC_EARLY_IOREMAP=y
 # CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
+CONFIG_PAGE_IDLE_FLAG=y
 # CONFIG_IDLE_PAGE_TRACKING is not set
 CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
 CONFIG_ARCH_HAS_PTE_DEVMAP=y
@@ -977,7 +978,9 @@ CONFIG_SECRETMEM=y
 #
 # Data Access Monitoring
 #
-# CONFIG_DAMON is not set
+CONFIG_DAMON=y
+CONFIG_DAMON_VADDR=y
+CONFIG_DAMON_DBGFS=y
 # end of Data Access Monitoring
 # end of Memory Management options
 
diff --git a/dashboard/config/linux/upstream-arm64-mte.config b/dashboard/config/linux/upstream-arm64-mte.config
index f1997602a..d076fc9ad 100644
--- a/dashboard/config/linux/upstream-arm64-mte.config
+++ b/dashboard/config/linux/upstream-arm64-mte.config
@@ -951,6 +951,7 @@ CONFIG_ZSMALLOC=y
 # CONFIG_ZSMALLOC_STAT is not set
 CONFIG_GENERIC_EARLY_IOREMAP=y
 # CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
+CONFIG_PAGE_IDLE_FLAG=y
 # CONFIG_IDLE_PAGE_TRACKING is not set
 CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
 CONFIG_ARCH_HAS_PTE_DEVMAP=y
@@ -971,7 +972,9 @@ CONFIG_SECRETMEM=y
 #
 # Data Access Monitoring
 #
-# CONFIG_DAMON is not set
+CONFIG_DAMON=y
+CONFIG_DAMON_VADDR=y
+CONFIG_DAMON_DBGFS=y
 # end of Data Access Monitoring
 # end of Memory Management options
 
diff --git a/dashboard/config/linux/upstream-kmsan.config b/dashboard/config/linux/upstream-kmsan.config
index 5560f0b42..22b8bb17d 100644
--- a/dashboard/config/linux/upstream-kmsan.config
+++ b/dashboard/config/linux/upstream-kmsan.config
@@ -1005,6 +1005,7 @@ CONFIG_ZSMALLOC=y
 # CONFIG_ZSMALLOC_STAT is not set
 CONFIG_GENERIC_EARLY_IOREMAP=y
 # CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
+CONFIG_PAGE_IDLE_FLAG=y
 # CONFIG_IDLE_PAGE_TRACKING is not set
 CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
 CONFIG_ARCH_HAS_PTE_DEVMAP=y
@@ -1027,7 +1028,9 @@ CONFIG_SECRETMEM=y
 #
 # Data Access Monitoring
 #
-# CONFIG_DAMON is not set
+CONFIG_DAMON=y
+CONFIG_DAMON_VADDR=y
+CONFIG_DAMON_DBGFS=y
 # end of Data Access Monitoring
 # end of Memory Management options
 
diff --git a/dashboard/config/linux/upstream-leak.config b/dashboard/config/linux/upstream-leak.config
index 28c123bfd..7942fbb65 100644
--- a/dashboard/config/linux/upstream-leak.config
+++ b/dashboard/config/linux/upstream-leak.config
@@ -990,6 +990,7 @@ CONFIG_ZSMALLOC=y
 # CONFIG_ZSMALLOC_STAT is not set
 CONFIG_GENERIC_EARLY_IOREMAP=y
 # CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
+CONFIG_PAGE_IDLE_FLAG=y
 # CONFIG_IDLE_PAGE_TRACKING is not set
 CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
 CONFIG_ARCH_HAS_PTE_DEVMAP=y
@@ -1012,7 +1013,9 @@ CONFIG_SECRETMEM=y
 #
 # Data Access Monitoring
 #
-# CONFIG_DAMON is not set
+CONFIG_DAMON=y
+CONFIG_DAMON_VADDR=y
+CONFIG_DAMON_DBGFS=y
 # end of Data Access Monitoring
 # end of Memory Management options
 
diff --git a/dashboard/config/linux/upstream-riscv64-kasan.config b/dashboard/config/linux/upstream-riscv64-kasan.config
index 43e5d01df..06e2832e4 100644
--- a/dashboard/config/linux/upstream-riscv64-kasan.config
+++ b/dashboard/config/linux/upstream-riscv64-kasan.config
@@ -591,6 +591,7 @@ CONFIG_ZSMALLOC=y
 # CONFIG_ZSMALLOC_STAT is not set
 CONFIG_GENERIC_EARLY_IOREMAP=y
 # CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
+CONFIG_PAGE_IDLE_FLAG=y
 # CONFIG_IDLE_PAGE_TRACKING is not set
 CONFIG_ZONE_DMA32=y
 CONFIG_HMM_MIRROR=y
@@ -602,7 +603,9 @@ CONFIG_SECRETMEM=y
 #
 # Data Access Monitoring
 #
-# CONFIG_DAMON is not set
+CONFIG_DAMON=y
+CONFIG_DAMON_VADDR=y
+CONFIG_DAMON_DBGFS=y
 # end of Data Access Monitoring
 # end of Memory Management options
 
diff --git a/dashboard/config/linux/upstream-s390-kasan.config b/dashboard/config/linux/upstream-s390-kasan.config
index 9bf8471eb..9b04c574e 100644
--- a/dashboard/config/linux/upstream-s390-kasan.config
+++ b/dashboard/config/linux/upstream-s390-kasan.config
@@ -715,7 +715,9 @@ CONFIG_ARCH_HAS_PTE_SPECIAL=y
 #
 # Data Access Monitoring
 #
-# CONFIG_DAMON is not set
+CONFIG_DAMON=y
+CONFIG_DAMON_VADDR=y
+CONFIG_DAMON_DBGFS=y
 # end of Data Access Monitoring
 # end of Memory Management options
 
diff --git a/dashboard/config/linux/upstream-selinux-kasan.config b/dashboard/config/linux/upstream-selinux-kasan.config
index dd60eedfb..ccb447be2 100644
--- a/dashboard/config/linux/upstream-selinux-kasan.config
+++ b/dashboard/config/linux/upstream-selinux-kasan.config
@@ -993,6 +993,7 @@ CONFIG_ZSMALLOC=y
 # CONFIG_ZSMALLOC_STAT is not set
 CONFIG_GENERIC_EARLY_IOREMAP=y
 # CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
+CONFIG_PAGE_IDLE_FLAG=y
 # CONFIG_IDLE_PAGE_TRACKING is not set
 CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
 CONFIG_ARCH_HAS_PTE_DEVMAP=y
@@ -1016,7 +1017,9 @@ CONFIG_SECRETMEM=y
 #
 # Data Access Monitoring
 #
-# CONFIG_DAMON is not set
+CONFIG_DAMON=y
+CONFIG_DAMON_VADDR=y
+CONFIG_DAMON_DBGFS=y
 # end of Data Access Monitoring
 # end of Memory Management options
 
diff --git a/dashboard/config/linux/upstream-smack-kasan.config b/dashboard/config/linux/upstream-smack-kasan.config
index da6583a97..62847598d 100644
--- a/dashboard/config/linux/upstream-smack-kasan.config
+++ b/dashboard/config/linux/upstream-smack-kasan.config
@@ -998,6 +998,7 @@ CONFIG_ZSMALLOC=y
 # CONFIG_ZSMALLOC_STAT is not set
 CONFIG_GENERIC_EARLY_IOREMAP=y
 # CONFIG_DEFERRED_STRUCT_PAGE_INIT is not set
+CONFIG_PAGE_IDLE_FLAG=y
 # CONFIG_IDLE_PAGE_TRACKING is not set
 CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
 CONFIG_ARCH_HAS_PTE_DEVMAP=y
@@ -1021,7 +1022,9 @@ CONFIG_SECRETMEM=y
 #
 # Data Access Monitoring
 #
-# CONFIG_DAMON is not set
+CONFIG_DAMON=y
+CONFIG_DAMON_VADDR=y
+CONFIG_DAMON_DBGFS=y
 # end of Data Access Monitoring
 # end of Memory Management options
 
diff --git a/sys/linux/damon.txt b/sys/linux/damon.txt
new file mode 100644
index 000000000..35313faa0
--- /dev/null
+++ b/sys/linux/damon.txt
@@ -0,0 +1,77 @@
+# Copyright 2018 syzkaller project authors. All rights reserved.
+# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
+
+include <uapi/linux/fcntl.h>
+include <uapi/linux/mount.h>
+
+resource fd_damon_target_ids[fd]
+resource fd_damon_attrs[fd]
+resource fd_damon_monitor_on[fd]
+resource fd_damon_init_regions[fd]
+resource fd_damon_schemes[fd]
+resource fd_damon_contexts[fd]
+
+openat$damon_target_ids(fd const[AT_FDCWD], file ptr[in, string["/sys/kernel/debug/damon/target_ids"]], flags flags[open_flags], mode flags[open_mode]) fd_damon_target_ids
+openat$damon_attrs(fd const[AT_FDCWD], file ptr[in, string["/sys/kernel/debug/damon/attrs"]], flags flags[open_flags], mode flags[open_mode]) fd_damon_attrs
+openat$damon_init_regions(fd const[AT_FDCWD], file ptr[in, string["/sys/kernel/debug/damon/init_regions"]], flags flags[open_flags], mode flags[open_mode]) fd_damon_init_regions
+openat$damon_monitor_on(fd const[AT_FDCWD], file ptr[in, string["/sys/kernel/debug/damon/monitor_on"]], flags flags[open_flags], mode flags[open_mode]) fd_damon_monitor_on
+openat$damon_schemes(fd const[AT_FDCWD], file ptr[in, string["/sys/kernel/debug/damon/schemes"]], flags flags[open_flags], mode flags[open_mode]) fd_damon_schemes
+openat$damon_kdamond_pid(fd const[AT_FDCWD], file ptr[in, string["/sys/kernel/debug/damon/kdamond_pid"]], flags flags[open_flags], mode flags[open_mode]) fd
+openat$damon_mk_contexts(fd const[AT_FDCWD], file ptr[in, string["/sys/kernel/debug/damon/mk_contexts"]], flags flags[open_flags], mode flags[open_mode]) fd_damon_contexts
+openat$damon_rm_contexts(fd const[AT_FDCWD], file ptr[in, string["/sys/kernel/debug/damon/rm_contexts"]], flags flags[open_flags], mode flags[open_mode]) fd_damon_contexts
+
+write$damon_target_ids(fd fd_damon_target_ids, buf ptr[in, damon_target_id_input], count len[buf])
+write$damon_attrs(fd fd_damon_attrs, buf ptr[in, damon_attrs], count len[buf])
+write$damon_init_regions(fd fd_damon_init_regions, buf ptr[in, damon_init_regions], count len[buf])
+write$damon_monitor_on(fd fd_damon_monitor_on, buf ptr[in, string["on"]], count len[buf])
+write$damon_schemes(fd fd_damon_schemes, buf ptr[in, damon_schemes], count len[buf])
+write$damon_contexts(fd fd_damon_contexts, buf ptr[in, array[damon_contexts]], count len[buf])
+
+damon_schemes {
+	min_size	fmt[dec, int32]
+	max_size	fmt[dec, int32]
+	min_acc		const[' ', int8]
+	max_acc		const[' ', int8]
+	min_age		fmt[dec, int32]
+	max_age		fmt[dec, int32]
+	action		fmt[dec, int32]
+} [packed]
+
+damon_target_id_input {
+	paddr	optional[string["paddr\n"]]
+	pids	array[damon_target_pid]
+} [packed]
+
+damon_target_pid {
+	space	stringnoz[" "]
+	pid	fmt[dec, pid]
+}
+
+damon_attrs {
+	sampl_interval		damon_attr
+	aggr_interval		damon_attr
+	reg_upd_interval	damon_attr
+	min			damon_attr
+	max			damon_attr
+} [packed]
+
+damon_attr {
+	space	stringnoz[" "]
+	val	fmt[dec, int32]
+}
+
+damon_init_regions {
+	target	damon_target_pid
+	start	damon_addr
+	end	damon_addr
+} [packed]
+
+damon_addr {
+	space	stringnoz[" "]
+	val	fmt[dec, int64]
+}
+
+damon_contexts {
+	space		stringnoz[" "]
+	dir_name	stringnoz[filename]
+}
diff --git a/sys/linux/damon.txt.const b/sys/linux/damon.txt.const
new file mode 100644
index 000000000..30259d4b7
--- /dev/null
+++ b/sys/linux/damon.txt.const
@@ -0,0 +1,5 @@
+# Code generated by syz-sysgen. DO NOT EDIT.
+arches = 386, amd64, arm, arm64, mips64le, ppc64le, riscv64, s390x
+AT_FDCWD = 18446744073709551516
+__NR_openat = 56, 386:295, amd64:257, arm:322, mips64le:5247, ppc64le:286, s390x:288
+__NR_write = 4, amd64:1, arm64:riscv64:64, mips64le:5001