/*
* ARTPEC-6 clock controller indexes
*
* Copyright 2016 Axis Comunications AB.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef DT_BINDINGS_CLK_ARTPEC6_CLKCTRL_H
#define DT_BINDINGS_CLK_ARTPEC6_CLKCTRL_H
#define ARTPEC6_CLK_CPU 0
#define ARTPEC6_CLK_CPU_PERIPH 1
#define ARTPEC6_CLK_NAND_CLKA 2
#define ARTPEC6_CLK_NAND_CLKB 3
#define ARTPEC6_CLK_ETH_ACLK 4
#define ARTPEC6_CLK_DMA_ACLK 5
#define ARTPEC6_CLK_PTP_REF 6
#define ARTPEC6_CLK_SD_PCLK 7
#define ARTPEC6_CLK_SD_IMCLK 8
#define ARTPEC6_CLK_I2S_HST 9
#define ARTPEC6_CLK_I2S0_CLK 10
#define ARTPEC6_CLK_I2S1_CLK 11
#define ARTPEC6_CLK_UART_PCLK 12
#define ARTPEC6_CLK_UART_REFCLK 13
#define ARTPEC6_CLK_I2C 14
#define ARTPEC6_CLK_SPI_PCLK 15
#define ARTPEC6_CLK_SPI_SSPCLK 16
#define ARTPEC6_CLK_SYS_TIMER 17
#define ARTPEC6_CLK_FRACDIV_IN 18
#define ARTPEC6_CLK_DBG_PCLK 19
/* This must be the highest clock index plus one. */
#define ARTPEC6_CLK_NUMCLOCKS 20
#endif
value='master'>master
cgroup: don't online subsystems before cgroup_name/path() are operational
While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out
cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems
before the new cgroup is associated with it kernfs_node. This is fine
for cgroup proper but cgroup_name/path() depend on the associated
kernfs_node and if a subsystem makes the new cgroup_subsys_state
visible, which they're allowed to after onlining, it can lead to NULL
dereference.
The current code performs cgroup creation and subsystem onlining in
cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems
visible afterwards. There's no reason to online the subsystems early
and we can simply drop cgroup_apply_control_enable() call from
cgroup_create() so that the subsystems are onlined and made visible at
the same time.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()")
Cc: stable@vger.kernel.org # v4.6+