/* * Copyright (C) 2015 Broadcom Corporation * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation version 2. * * This program is distributed "as is" WITHOUT ANY WARRANTY of any * kind, whether express or implied; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #define BCM2835_PLLA 0 #define BCM2835_PLLB 1 #define BCM2835_PLLC 2 #define BCM2835_PLLD 3 #define BCM2835_PLLH 4 #define BCM2835_PLLA_CORE 5 #define BCM2835_PLLA_PER 6 #define BCM2835_PLLB_ARM 7 #define BCM2835_PLLC_CORE0 8 #define BCM2835_PLLC_CORE1 9 #define BCM2835_PLLC_CORE2 10 #define BCM2835_PLLC_PER 11 #define BCM2835_PLLD_CORE 12 #define BCM2835_PLLD_PER 13 #define BCM2835_PLLH_RCAL 14 #define BCM2835_PLLH_AUX 15 #define BCM2835_PLLH_PIX 16 #define BCM2835_CLOCK_TIMER 17 #define BCM2835_CLOCK_OTP 18 #define BCM2835_CLOCK_UART 19 #define BCM2835_CLOCK_VPU 20 #define BCM2835_CLOCK_V3D 21 #define BCM2835_CLOCK_ISP 22 #define BCM2835_CLOCK_H264 23 #define BCM2835_CLOCK_VEC 24 #define BCM2835_CLOCK_HSM 25 #define BCM2835_CLOCK_SDRAM 26 #define BCM2835_CLOCK_TSENS 27 #define BCM2835_CLOCK_EMMC 28 #define BCM2835_CLOCK_PERI_IMAGE 29 #define BCM2835_CLOCK_PWM 30 #define BCM2835_CLOCK_PCM 31 #define BCM2835_PLLA_DSI0 32 #define BCM2835_PLLA_CCP2 33 #define BCM2835_PLLD_DSI0 34 #define BCM2835_PLLD_DSI1 35 #define BCM2835_CLOCK_AVEO 36 #define BCM2835_CLOCK_DFT 37 #define BCM2835_CLOCK_GP0 38 #define BCM2835_CLOCK_GP1 39 #define BCM2835_CLOCK_GP2 40 #define BCM2835_CLOCK_SLIM 41 #define BCM2835_CLOCK_SMI 42 #define BCM2835_CLOCK_TEC 43 #define BCM2835_CLOCK_DPI 44 #define BCM2835_CLOCK_CAM0 45 #define BCM2835_CLOCK_CAM1 46 #define BCM2835_CLOCK_DSI0E 47 #define BCM2835_CLOCK_DSI1E 48 /net-next.git/commit/tools/perf/util/help-unknown-cmd.c?id=add7c65ca426b7a37184dd3d2172394e23d585d6'>commitdiff
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authorAndrei Vagin <avagin@openvz.org>2017-01-04 19:28:14 -0800
committerEric W. Biederman <ebiederm@xmission.com>2017-01-10 13:34:56 +1300
commitadd7c65ca426b7a37184dd3d2172394e23d585d6 (patch)
tree28b08b519540041b06ed0ab0b1c005076b932e8e /tools/perf/util/help-unknown-cmd.c
parent75422726b0f717d67db3283c2eb5bc14fa2619c5 (diff)
pid: fix lockdep deadlock warning due to ucount_lock
========================================================= [ INFO: possible irq lock inversion dependency detected ] 4.10.0-rc2-00024-g4aecec9-dirty #118 Tainted: G W --------------------------------------------------------- swapper/1/0 just changed the state of lock: (&(&sighand->siglock)->rlock){-.....}, at: [<ffffffffbd0a1bc6>] __lock_task_sighand+0xb6/0x2c0 but this lock took another, HARDIRQ-unsafe lock in the past: (ucounts_lock){+.+...} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Chain exists of: &(&sighand->siglock)->rlock --> &(&tty->ctrl_lock)->rlock --> ucounts_lock Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(ucounts_lock); local_irq_disable(); lock(&(&sighand->siglock)->rlock); lock(&(&tty->ctrl_lock)->rlock); <Interrupt> lock(&(&sighand->siglock)->rlock); *** DEADLOCK *** This patch removes a dependency between rlock and ucount_lock. Fixes: f333c700c610 ("pidns: Add a limit on the number of pid namespaces") Cc: stable@vger.kernel.org Signed-off-by: Andrei Vagin <avagin@openvz.org> Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'tools/perf/util/help-unknown-cmd.c')