From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 01819ECAAD1 for ; Thu, 1 Sep 2022 17:48:10 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4MJT6K50nGz3ft8 for ; Fri, 2 Sep 2022 03:48:09 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20210112 header.b=H4jFJ8Dt; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=flex--surenb.bounces.google.com (client-ip=2607:f8b0:4864:20::114a; helo=mail-yw1-x114a.google.com; envelope-from=3je0qywykdmo8a7u3rw44w1u.s421y3ad55s-tub1y898.4f1qr8.47w@flex--surenb.bounces.google.com; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20210112 header.b=H4jFJ8Dt; dkim-atps=neutral Received: from mail-yw1-x114a.google.com (mail-yw1-x114a.google.com [IPv6:2607:f8b0:4864:20::114a]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4MJSrj58wkz2ywm for ; Fri, 2 Sep 2022 03:36:16 +1000 (AEST) Received: by mail-yw1-x114a.google.com with SMTP id 00721157ae682-33ef3e5faeeso228812757b3.0 for ; Thu, 01 Sep 2022 10:36:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date; bh=r+vF5Lo2i1OjVhetiEIJ/9q6C9lfd71c3zrmx7NgTrs=; b=H4jFJ8Dt7ZH5cKrXQpN0z8PEygipTnxhDURDwP2r/L6ST1buj0wC6b62XAFXTWTuHE TRectVq93AO6tGT7OX1/aI7LFkcRGjFnJwRUud+1aazBY2txe7GqBy/qCAKx7DzAzI1F 08tbsOZGFue1vB/xCd7zDPTLBCjfhCGGnp6kgmw7nw7+o4krMVIGwx+wiyWeS1/K9dS3 MY2rAdmwbAo0HfcpKpUrJZgpdcga0Ob80OnRbMBFu5K9+oe2e9P/nHO4ZkzgpYkHj1ef kx644FtyUEEJInyDO+nYaup+HokzUzXjSdh7on7VQkqKFKRY8gzUfUlLXLq38fi2PNgi LbOQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date; bh=r+vF5Lo2i1OjVhetiEIJ/9q6C9lfd71c3zrmx7NgTrs=; b=K/y2tEelqNw2R2TaylD9APHXgWrx0ccbWYH0MPRDq+fOWtt9DcyuVK07eybQTABcdO UCYiwHz61JRt4WbU2JE8A4asuJ1a0xU3ch1YqAO0j2h4j/Hsbg53WDkV0FhnWTPvzed3 UuWyTX63tLgjflYS9W9jv9Hhw8zcO86Y8jg5ybDRBnhwSNkDR37siwV8w5BqCVf4VlAK kV+a5ETJU+GmcmwzgNEFlJMefWW+E8C0vCvarSugVx+s5Um4E7lp61hRT0Oo4rm3Rd9p /cjWpqm/uvhNkQRR+ISpGGbA79tajTPbb0tstTHJrwiQcSxV+TEqcDj8wNKb/C1+ZgSZ JUWQ== X-Gm-Message-State: ACgBeo2sUQxYRBis6Tetshm7F7jVYGOyqr+2iHSSBlk/pkqpbLO0wZg7 173AapSCsS+LbpOXMjZy4lxWmZoBYBc= X-Google-Smtp-Source: AA6agR4BDUj9pfWqCFb+xsqUI8F9TUy99Q1kXWNSZ/lAe4Y/IzT7ZfeAPxwUhMVzFJvC8KeIfmdI79dhOFA= X-Received: from surenb-desktop.mtv.corp.google.com ([2620:15c:211:200:1bfc:e7ee:6530:4449]) (user=surenb job=sendgmr) by 2002:a25:8d05:0:b0:68e:c838:c24a with SMTP id n5-20020a258d05000000b0068ec838c24amr19294531ybl.45.1662053773853; Thu, 01 Sep 2022 10:36:13 -0700 (PDT) Date: Thu, 1 Sep 2022 10:35:08 -0700 In-Reply-To: <20220901173516.702122-1-surenb@google.com> Mime-Version: 1.0 References: <20220901173516.702122-1-surenb@google.com> X-Mailer: git-send-email 2.37.2.789.g6183377224-goog Message-ID: <20220901173516.702122-21-surenb@google.com> Subject: [RFC PATCH RESEND 20/28] mm: introduce per-VMA lock statistics From: Suren Baghdasaryan To: akpm@linux-foundation.org Content-Type: text/plain; charset="UTF-8" X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: michel@lespinasse.org, joelaf@google.com, songliubraving@fb.com, mhocko@suse.com, david@redhat.com, peterz@infradead.org, bigeasy@linutronix.de, peterx@redhat.com, dhowells@redhat.com, linux-mm@kvack.org, jglisse@google.com, dave@stgolabs.net, minchan@google.com, x86@kernel.org, hughd@google.com, willy@infradead.org, laurent.dufour@fr.ibm.com, mgorman@suse.de, rientjes@google.com, axelrasmussen@google.com, kernel-team@android.com, paulmck@kernel.org, liam.howlett@oracle.com, luto@kernel.org, ldufour@linux.ibm.com, surenb@google.com, vbabka@suse.cz, linux-arm-kernel@lists.infradead.org, kent.overstreet@linux.dev, linux-kernel@vger.kernel.org, hannes@cmpxchg.org, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Add a new CONFIG_PER_VMA_LOCK_STATS config option to dump extra statistics about handling page fault under VMA lock. Signed-off-by: Suren Baghdasaryan --- include/linux/vm_event_item.h | 6 ++++++ include/linux/vmstat.h | 6 ++++++ mm/Kconfig.debug | 8 ++++++++ mm/vmstat.c | 6 ++++++ 4 files changed, 26 insertions(+) diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index f3fc36cd2276..a325783ed05d 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -150,6 +150,12 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, #ifdef CONFIG_X86 DIRECT_MAP_LEVEL2_SPLIT, DIRECT_MAP_LEVEL3_SPLIT, +#endif +#ifdef CONFIG_PER_VMA_LOCK_STATS + VMA_LOCK_SUCCESS, + VMA_LOCK_ABORT, + VMA_LOCK_RETRY, + VMA_LOCK_MISS, #endif NR_VM_EVENT_ITEMS }; diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h index bfe38869498d..0c2611899cfc 100644 --- a/include/linux/vmstat.h +++ b/include/linux/vmstat.h @@ -131,6 +131,12 @@ static inline void vm_events_fold_cpu(int cpu) #define count_vm_vmacache_event(x) do {} while (0) #endif +#ifdef CONFIG_PER_VMA_LOCK_STATS +#define count_vm_vma_lock_event(x) count_vm_event(x) +#else +#define count_vm_vma_lock_event(x) do {} while (0) +#endif + #define __count_zid_vm_events(item, zid, delta) \ __count_vm_events(item##_NORMAL - ZONE_NORMAL + zid, delta) diff --git a/mm/Kconfig.debug b/mm/Kconfig.debug index ce8dded36de9..075642763a03 100644 --- a/mm/Kconfig.debug +++ b/mm/Kconfig.debug @@ -207,3 +207,11 @@ config PTDUMP_DEBUGFS kernel. If in doubt, say N. + + +config PER_VMA_LOCK_STATS + bool "Statistics for per-vma locks" + depends on PER_VMA_LOCK + help + Statistics for per-vma locks. + If in doubt, say N. diff --git a/mm/vmstat.c b/mm/vmstat.c index 90af9a8572f5..3f3804c846a6 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1411,6 +1411,12 @@ const char * const vmstat_text[] = { "direct_map_level2_splits", "direct_map_level3_splits", #endif +#ifdef CONFIG_PER_VMA_LOCK_STATS + "vma_lock_success", + "vma_lock_abort", + "vma_lock_retry", + "vma_lock_miss", +#endif #endif /* CONFIG_VM_EVENT_COUNTERS || CONFIG_MEMCG */ }; #endif /* CONFIG_PROC_FS || CONFIG_SYSFS || CONFIG_NUMA || CONFIG_MEMCG */ -- 2.37.2.789.g6183377224-goog