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From: Jan Kiszka <jan.kiszka@siemens.com>
To: xenomai@xenomai.org
Subject: [PATCH 02/25] cobalt/kevents: dovetail: drop call to obsolete force_commit_memory()
Date: Thu, 20 May 2021 23:44:12 +0200	[thread overview]
Message-ID: <0aef0e3a27e225564879c2c1fb2c54da8f935f0f.1621547075.git.jan.kiszka@siemens.com> (raw)
In-Reply-To: <cover.1621547075.git.jan.kiszka@siemens.com>

From: Philippe Gerum <rpm@xenomai.org>

A process is now marked for COW-breaking on fork() upon the first call
to dovetail_init_altsched(), and must ensure its memory is locked via
a call to mlockall(MCL_CURRENT|MCL_FUTURE) as usual.

As a result, force_commit_memory() became pointless and was removed
from the Dovetail interface.

Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
 kernel/cobalt/dovetail/kevents.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/kernel/cobalt/dovetail/kevents.c b/kernel/cobalt/dovetail/kevents.c
index 5efe30c22d..64f6f421c1 100644
--- a/kernel/cobalt/dovetail/kevents.c
+++ b/kernel/cobalt/dovetail/kevents.c
@@ -516,7 +516,8 @@ void handle_inband_event(enum inband_event_type event, void *data)
 }
 
 #ifdef CONFIG_MMU
-static inline int disable_ondemand_memory(void)
+
+int pipeline_prepare_current(void)
 {
 	struct task_struct *p = current;
 	kernel_siginfo_t si;
@@ -527,15 +528,9 @@ static inline int disable_ondemand_memory(void)
 		si.si_code = SI_QUEUE;
 		si.si_int = SIGDEBUG_NOMLOCK | sigdebug_marker;
 		send_sig_info(SIGDEBUG, &si, p);
-		return 0;
 	}
 
-	return force_commit_memory();
-}
-
-int pipeline_prepare_current(void)
-{
-	return disable_ondemand_memory();
+	return 0;
 }
 
 static inline int get_mayday_prot(void)
-- 
2.26.2



  parent reply	other threads:[~2021-05-20 21:44 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-20 21:44 [PATCH 00/25] Dovetail integration, next round Jan Kiszka
2021-05-20 21:44 ` [PATCH 01/25] cobalt/kernel: ipipe: rename xnsched_realtime_domain to xnsched_primary_domain Jan Kiszka
2021-05-20 21:44 ` Jan Kiszka [this message]
2021-05-20 21:44 ` [PATCH 03/25] cobalt/intr: dovetail: implement interrupt management, handling Jan Kiszka
2021-05-20 21:44 ` [PATCH 04/25] cobalt/irq: dovetail: implement out-of-band irq management and handling Jan Kiszka
2021-05-20 21:44 ` [PATCH 05/25] cobalt/kevents: dovetail: enable back tracing Jan Kiszka
2021-05-20 21:44 ` [PATCH 06/25] cobalt/x86: ipipe: Remove leftover from x86_32 removal Jan Kiszka
2021-05-20 21:44 ` [PATCH 07/25] cobalt/x86: ipipe: Drop unused strncpy_from_user_nocheck Jan Kiszka
2021-05-20 21:44 ` [PATCH 08/25] cobalt/x86: Move shared headers out of pipeline specific folder Jan Kiszka
2021-05-20 21:44 ` [PATCH 09/25] cobalt/x86: dovetail: add architecture bits Jan Kiszka
2021-05-20 21:44 ` [PATCH 10/25] cobalt/kernel: dovetail: implement sirq services Jan Kiszka
2021-05-20 21:44 ` [PATCH 11/25] cobalt/sched: dovetail: add task control block initializers Jan Kiszka
2021-05-20 21:44 ` [PATCH 12/25] cobalt/clock: dovetail: provide backend code to CLOCK_HOST_REALTIME Jan Kiszka
2021-05-20 21:44 ` [PATCH 13/25] cobalt/init: dovetail: add oob stage enabling, disabling services Jan Kiszka
2021-05-20 21:44 ` [PATCH 14/25] cobalt/timer: Check if nklock is held in timer services Jan Kiszka
2021-05-20 21:44 ` [PATCH 15/25] cobalt/tick: dovetail: install/uninstall proxy tick device Jan Kiszka
2021-05-20 21:44 ` [PATCH 16/25] cobalt/tick: dovetail: implement pipeline_set_timer_shot() Jan Kiszka
2021-05-20 21:44 ` [PATCH 17/25] cobalt/tick: dovetail: implement pipeline_timer_name() Jan Kiszka
2021-05-20 21:44 ` [PATCH 18/25] cobalt/timer: pipeline: abstract handling of ONESHOT_STOPPED mode Jan Kiszka
2021-05-20 21:44 ` [PATCH 19/25] cobalt/timer: dovetail: handle " Jan Kiszka
2021-05-20 21:44 ` [PATCH 20/25] cobalt/tick: dovetail: flatten the call stack to pipeline services Jan Kiszka
2021-05-20 21:44 ` [PATCH 21/25] cobalt/clock: dovetail: implement pipeline_read_cycle_counter() Jan Kiszka
2021-05-20 21:44 ` [PATCH 22/25] lib/cobalt: ticks: drop cobalt_read_hrclock() Jan Kiszka
2021-05-20 21:44 ` [PATCH 23/25] lib/cobalt: dovetail: allow representing time as count of nanoseconds Jan Kiszka
2021-05-20 21:44 ` [PATCH 24/25] lib/cobalt: add default wrapper to clock_settime() Jan Kiszka
2021-05-20 21:44 ` [PATCH 25/25] lib/cobalt: dovetail: use clock_gettime() vcall for reading timestamps Jan Kiszka

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