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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D4FDC433EF for ; Tue, 25 Jan 2022 03:23:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S3418105AbiAYDR7 (ORCPT ); Mon, 24 Jan 2022 22:17:59 -0500 Received: from lgeamrelo11.lge.com ([156.147.23.51]:54176 "EHLO lgeamrelo11.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1318650AbiAYDGy (ORCPT ); Mon, 24 Jan 2022 22:06:54 -0500 Received: from unknown (HELO lgeamrelo02.lge.com) (156.147.1.126) by 156.147.23.51 with ESMTP; 25 Jan 2022 11:36:46 +0900 X-Original-SENDERIP: 156.147.1.126 X-Original-MAILFROM: byungchul.park@lge.com Received: from unknown (HELO localhost.localdomain) (10.177.244.38) by 156.147.1.126 with ESMTP; 25 Jan 2022 11:36:46 +0900 X-Original-SENDERIP: 10.177.244.38 X-Original-MAILFROM: byungchul.park@lge.com From: Byungchul Park To: torvalds@linux-foundation.org, mingo@redhat.com, linux-kernel@vger.kernel.org Cc: peterz@infradead.org, will@kernel.org, tglx@linutronix.de, rostedt@goodmis.org, joel@joelfernandes.org, sashal@kernel.org, daniel.vetter@ffwll.ch, chris@chris-wilson.co.uk, duyuyang@gmail.com, johannes.berg@intel.com, tj@kernel.org, tytso@mit.edu, willy@infradead.org, david@fromorbit.com, amir73il@gmail.com, bfields@fieldses.org, gregkh@linuxfoundation.org, kernel-team@lge.com Subject: [RFC 04/14] dept: Apply Dept to spinlock Date: Tue, 25 Jan 2022 11:36:34 +0900 Message-Id: <1643078204-12663-5-git-send-email-byungchul.park@lge.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1643078204-12663-1-git-send-email-byungchul.park@lge.com> References: <1643078204-12663-1-git-send-email-byungchul.park@lge.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Makes Dept able to track dependencies by spinlock. Signed-off-by: Byungchul Park --- include/linux/lockdep.h | 18 +++++++++++++++--- include/linux/spinlock.h | 24 ++++++++++++++++++++++++ include/linux/spinlock_types.h | 10 ++++++++++ 3 files changed, 49 insertions(+), 3 deletions(-) diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index bcd9d7d..c08e3ae 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -566,9 +566,21 @@ static inline void print_irqtrace_events(struct task_struct *curr) #define lock_acquire_shared(l, s, t, n, i) lock_acquire(l, s, t, 1, 1, n, i) #define lock_acquire_shared_recursive(l, s, t, n, i) lock_acquire(l, s, t, 2, 1, n, i) -#define spin_acquire(l, s, t, i) lock_acquire_exclusive(l, s, t, NULL, i) -#define spin_acquire_nest(l, s, t, n, i) lock_acquire_exclusive(l, s, t, n, i) -#define spin_release(l, i) lock_release(l, i) +#define spin_acquire(l, s, t, i) \ +do { \ + lock_acquire_exclusive(l, s, t, NULL, i); \ + dept_spin_lock(&(l)->dmap, s, t, NULL, "spin_unlock", i); \ +} while (0) +#define spin_acquire_nest(l, s, t, n, i) \ +do { \ + lock_acquire_exclusive(l, s, t, n, i); \ + dept_spin_lock(&(l)->dmap, s, t, (n) ? &(n)->dmap : NULL, "spin_unlock", i); \ +} while (0) +#define spin_release(l, i) \ +do { \ + lock_release(l, i); \ + dept_spin_unlock(&(l)->dmap, i); \ +} while (0) #define rwlock_acquire(l, s, t, i) lock_acquire_exclusive(l, s, t, NULL, i) #define rwlock_acquire_read(l, s, t, i) \ diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h index 7989784..b25bfc1 100644 --- a/include/linux/spinlock.h +++ b/include/linux/spinlock.h @@ -92,6 +92,30 @@ # include #endif +#ifdef CONFIG_DEPT +#define dept_spin_lock(m, ne, t, n, e_fn, ip) \ +do { \ + if (t) { \ + dept_ecxt_enter(m, 1UL, ip, __func__, e_fn, ne); \ + dept_asked_event(m); \ + } else if (n) { \ + dept_warn_on(dept_top_map() != (n)); \ + } else { \ + dept_wait(m, 1UL, ip, __func__, ne); \ + dept_ecxt_enter(m, 1UL, ip, __func__, e_fn, ne); \ + dept_asked_event(m); \ + } \ +} while (0) +#define dept_spin_unlock(m, ip) \ +do { \ + dept_event(m, 1UL, ip, __func__); \ + dept_ecxt_exit(m, ip); \ +} while (0) +#else +#define dept_spin_lock(m, ne, t, n, e_fn, ip) do { } while (0) +#define dept_spin_unlock(m, ip) do { } while (0) +#endif + #ifdef CONFIG_DEBUG_SPINLOCK extern void __raw_spin_lock_init(raw_spinlock_t *lock, const char *name, struct lock_class_key *key, short inner); diff --git a/include/linux/spinlock_types.h b/include/linux/spinlock_types.h index b981caa..4ed8a9b 100644 --- a/include/linux/spinlock_types.h +++ b/include/linux/spinlock_types.h @@ -32,16 +32,26 @@ #define SPINLOCK_OWNER_INIT ((void *)-1L) +#ifdef CONFIG_DEPT +# define RAW_SPIN_DMAP_INIT(lockname) .dmap = { .name = #lockname }, +# define SPIN_DMAP_INIT(lockname) .dmap = { .name = #lockname }, +#else +# define RAW_SPIN_DMAP_INIT(lockname) +# define SPIN_DMAP_INIT(lockname) +#endif + #ifdef CONFIG_DEBUG_LOCK_ALLOC # define RAW_SPIN_DEP_MAP_INIT(lockname) \ .dep_map = { \ .name = #lockname, \ .wait_type_inner = LD_WAIT_SPIN, \ + RAW_SPIN_DMAP_INIT(lockname) \ } # define SPIN_DEP_MAP_INIT(lockname) \ .dep_map = { \ .name = #lockname, \ .wait_type_inner = LD_WAIT_CONFIG, \ + SPIN_DMAP_INIT(lockname) \ } #else # define RAW_SPIN_DEP_MAP_INIT(lockname) -- 1.9.1