Date: Mon, 1 Nov 2021 00:45:57 GMT From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: c54be5cfcf70 - stable/13 - Add vm.swap_objects sysctl Message-ID: <202111010045.1A10jvMU005108@gitrepo.freebsd.org>
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The branch stable/13 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=c54be5cfcf70953b8e0a8c1fcf9a6d5005516f55 commit c54be5cfcf70953b8e0a8c1fcf9a6d5005516f55 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2021-07-13 10:27:36 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2021-11-01 00:44:51 +0000 Add vm.swap_objects sysctl (cherry picked from commit 42812ccc969f174b3e5827c1c320b1738a1e0985) --- sys/vm/vm_object.c | 28 ++++++++++++++++++++++++---- 1 file changed, 24 insertions(+), 4 deletions(-) diff --git a/sys/vm/vm_object.c b/sys/vm/vm_object.c index 533d1e37318e..addcf5f2c686 100644 --- a/sys/vm/vm_object.c +++ b/sys/vm/vm_object.c @@ -2471,7 +2471,7 @@ vm_object_busy_wait(vm_object_t obj, const char *wmesg) } static int -vm_object_list_handler(struct sysctl_req *req) +vm_object_list_handler(struct sysctl_req *req, bool swap_only) { struct kinfo_vmobject *kvo; char *fullpath, *freepath; @@ -2509,10 +2509,12 @@ vm_object_list_handler(struct sysctl_req *req) */ mtx_lock(&vm_object_list_mtx); TAILQ_FOREACH(obj, &vm_object_list, object_list) { - if (obj->type == OBJT_DEAD) + if (obj->type == OBJT_DEAD || + (swap_only && (obj->flags & (OBJ_ANON | OBJ_SWAP)) == 0)) continue; VM_OBJECT_RLOCK(obj); - if (obj->type == OBJT_DEAD) { + if (obj->type == OBJT_DEAD || + (swap_only && (obj->flags & (OBJ_ANON | OBJ_SWAP)) == 0)) { VM_OBJECT_RUNLOCK(obj); continue; } @@ -2592,13 +2594,31 @@ vm_object_list_handler(struct sysctl_req *req) static int sysctl_vm_object_list(SYSCTL_HANDLER_ARGS) { - return (vm_object_list_handler(req)); + return (vm_object_list_handler(req, false)); } SYSCTL_PROC(_vm, OID_AUTO, objects, CTLTYPE_STRUCT | CTLFLAG_RW | CTLFLAG_SKIP | CTLFLAG_MPSAFE, NULL, 0, sysctl_vm_object_list, "S,kinfo_vmobject", "List of VM objects"); +static int +sysctl_vm_object_list_swap(SYSCTL_HANDLER_ARGS) +{ + return (vm_object_list_handler(req, true)); +} + +/* + * This sysctl returns list of the anonymous or swap objects. Intent + * is to provide stripped optimized list useful to analyze swap use. + * Since technically non-swap (default) objects participate in the + * shadow chains, and are converted to swap type as needed by swap + * pager, we must report them. + */ +SYSCTL_PROC(_vm, OID_AUTO, swap_objects, + CTLTYPE_STRUCT | CTLFLAG_RW | CTLFLAG_SKIP | CTLFLAG_MPSAFE, NULL, 0, + sysctl_vm_object_list_swap, "S,kinfo_vmobject", + "List of swap VM objects"); + #include "opt_ddb.h" #ifdef DDB #include <sys/kernel.h>
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