| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Wed, 08 Jun 2022 16:27:48 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: peterz@...radead.org
Cc: rth@...ddle.net, ink@...assic.park.msu.ru, mattst88@...il.com,
vgupta@...nel.org, linux@...linux.org.uk,
ulli.kroll@...glemail.com, linus.walleij@...aro.org,
shawnguo@...nel.org, Sascha Hauer <s.hauer@...gutronix.de>,
kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
tony@...mide.com, khilman@...nel.org, catalin.marinas@....com,
will@...nel.org, guoren@...nel.org, bcain@...cinc.com,
chenhuacai@...nel.org, kernel@...0n.name, geert@...ux-m68k.org,
sammy@...my.net, monstr@...str.eu, tsbogend@...ha.franken.de,
dinguyen@...nel.org, jonas@...thpole.se,
stefan.kristiansson@...nalahti.fi, shorne@...il.com,
James.Bottomley@...senPartnership.com, deller@....de,
mpe@...erman.id.au, benh@...nel.crashing.org, paulus@...ba.org,
paul.walmsley@...ive.com, palmer@...belt.com,
aou@...s.berkeley.edu, hca@...ux.ibm.com, gor@...ux.ibm.com,
agordeev@...ux.ibm.com, borntraeger@...ux.ibm.com,
svens@...ux.ibm.com, ysato@...rs.sourceforge.jp, dalias@...c.org,
davem@...emloft.net, richard@....at,
anton.ivanov@...bridgegreys.com, johannes@...solutions.net,
tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com,
acme@...nel.org, mark.rutland@....com,
alexander.shishkin@...ux.intel.com, jolsa@...nel.org,
namhyung@...nel.org, jgross@...e.com, srivatsa@...il.mit.edu,
amakhalov@...are.com, pv-drivers@...are.com,
boris.ostrovsky@...cle.com, chris@...kel.net, jcmvbkbc@...il.com,
rafael@...nel.org, lenb@...nel.org, pavel@....cz,
gregkh@...uxfoundation.org, mturquette@...libre.com,
sboyd@...nel.org, daniel.lezcano@...aro.org, lpieralisi@...nel.org,
sudeep.holla@....com, agross@...nel.org,
bjorn.andersson@...aro.org, anup@...infault.org,
thierry.reding@...il.com, jonathanh@...dia.com,
jacob.jun.pan@...ux.intel.com, Arnd Bergmann <arnd@...db.de>,
yury.norov@...il.com, andriy.shevchenko@...ux.intel.com,
linux@...musvillemoes.dk, rostedt@...dmis.org, pmladek@...e.com,
senozhatsky@...omium.org, john.ogness@...utronix.de,
paulmck@...nel.org, frederic@...nel.org, quic_neeraju@...cinc.com,
josh@...htriplett.org, mathieu.desnoyers@...icios.com,
jiangshanlai@...il.com, joel@...lfernandes.org,
juri.lelli@...hat.com, vincent.guittot@...aro.org,
dietmar.eggemann@....com, bsegall@...gle.com, mgorman@...e.de,
bristot@...hat.com, vschneid@...hat.com, jpoimboe@...nel.org,
linux-alpha@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-snps-arc@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
linux-csky@...r.kernel.org, linux-hexagon@...r.kernel.org,
linux-ia64@...r.kernel.org, linux-m68k@...ts.linux-m68k.org,
linux-mips@...r.kernel.org, openrisc@...ts.librecores.org,
linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org,
linux-sh@...r.kernel.org, sparclinux@...r.kernel.org,
linux-um@...ts.infradead.org, linux-perf-users@...r.kernel.org,
virtualization@...ts.linux-foundation.org,
xen-devel@...ts.xenproject.org, linux-xtensa@...ux-xtensa.org,
linux-acpi@...r.kernel.org, linux-pm@...r.kernel.org,
linux-clk@...r.kernel.org, linux-arm-msm@...r.kernel.org,
linux-tegra@...r.kernel.org, linux-arch@...r.kernel.org,
rcu@...r.kernel.org
Subject: [PATCH 25/36] time/tick-broadcast: Remove RCU_NONIDLE usage
No callers left that have already disabled RCU.
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
---
kernel/time/tick-broadcast-hrtimer.c | 29 ++++++++++++-----------------
1 file changed, 12 insertions(+), 17 deletions(-)
--- a/kernel/time/tick-broadcast-hrtimer.c
+++ b/kernel/time/tick-broadcast-hrtimer.c
@@ -56,25 +56,20 @@ static int bc_set_next(ktime_t expires,
* hrtimer callback function is currently running, then
* hrtimer_start() cannot move it and the timer stays on the CPU on
* which it is assigned at the moment.
+ */
+ hrtimer_start(&bctimer, expires, HRTIMER_MODE_ABS_PINNED_HARD);
+ /*
+ * The core tick broadcast mode expects bc->bound_on to be set
+ * correctly to prevent a CPU which has the broadcast hrtimer
+ * armed from going deep idle.
*
- * As this can be called from idle code, the hrtimer_start()
- * invocation has to be wrapped with RCU_NONIDLE() as
- * hrtimer_start() can call into tracing.
+ * As tick_broadcast_lock is held, nothing can change the cpu
+ * base which was just established in hrtimer_start() above. So
+ * the below access is safe even without holding the hrtimer
+ * base lock.
*/
- RCU_NONIDLE( {
- hrtimer_start(&bctimer, expires, HRTIMER_MODE_ABS_PINNED_HARD);
- /*
- * The core tick broadcast mode expects bc->bound_on to be set
- * correctly to prevent a CPU which has the broadcast hrtimer
- * armed from going deep idle.
- *
- * As tick_broadcast_lock is held, nothing can change the cpu
- * base which was just established in hrtimer_start() above. So
- * the below access is safe even without holding the hrtimer
- * base lock.
- */
- bc->bound_on = bctimer.base->cpu_base->cpu;
- } );
+ bc->bound_on = bctimer.base->cpu_base->cpu;
+
return 0;
}
Powered by blists - more mailing lists