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#ifndef SOCK_H
#define SOCK_H

extern int af_socket(int af);
extern int pf_socket(void);
extern int pf_tx_socket(void);
extern void set_nonblocking(int fd);
extern int set_nonblocking_sloppy(int fd);
extern int set_reuseaddr(int fd);
extern void set_sock_qdisc_bypass(int fd, int verbose);
extern void set_sock_prio(int fd, int prio);
extern void set_tcp_nodelay(int fd);
extern void set_socket_keepalive(int fd);
extern int set_ipv6_only(int fd);
extern void set_mtu_disc_dont(int fd);
extern void set_system_socket_memory(int *vals, size_t len);
extern void reset_system_socket_memory(int *vals, size_t len);

#endif /* SOCK_H */
<tglx@linutronix.de>2016-10-25 16:27:39 +0200 commitb831275a3553c32091222ac619cfddd73a5553fb (patch) tree83869391da1625c235e75b4584dfcff9b0b189ca /Documentation/cdrom parent07d9a380680d1c0eb51ef87ff2eab5c994949e69 (diff)
timers: Plug locking race vs. timer migration
Linus noticed that lock_timer_base() lacks a READ_ONCE() for accessing the timer flags. As a consequence the compiler is allowed to reload the flags between the initial check for TIMER_MIGRATION and the following timer base computation and the spin lock of the base. While this has not been observed (yet), we need to make sure that it never happens. Fixes: 0eeda71bc30d ("timer: Replace timer base by a cpu index") Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1610241711220.4983@nanos Cc: stable@vger.kernel.org Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org>
Diffstat (limited to 'Documentation/cdrom')