xv6-riscv-kernel/kernel/spinlock.h

// Mutual exclusion lock.
struct spinlock {
  u32 locked; // Is the lock held?

  // For debugging:
  char       *name; // Name of lock.
  struct cpu *cpu;  // The cpu holding the lock.
};
Revert "Introduce and use sleeplocks instead of BUSY flags" My changes have a race with re-used bufs and the code doesn't seem to get shorter Keep the changes that fixed ip->off race This reverts commit 3a5fa7ed9020eaf8ab843a16d26db7393b2ec072. Conflicts: defs.h file.c file.h 2011-08-29 23:18:40 +02:00			`// Mutual exclusion lock.`
cvs add spinlock.h fix race in schedule() 2006-07-12 11:10:25 +02:00			`struct spinlock {`
Complete reformat 2024-06-15 16:55:06 +02:00			`u32 locked; // Is the lock held?`
Remove trailing white space with: for f in .{h,c}; do sed -i .sed 's/[[:blank:]]$//' $f; done (Thanks to Nicolás Wolovick) 2016-08-25 15:13:00 +02:00
more comments 2006-09-07 16:12:30 +02:00			`// For debugging:`
Complete reformat 2024-06-15 16:55:06 +02:00			`char *name; // Name of lock.`
			`struct cpu *cpu; // The cpu holding the lock.`
cvs add spinlock.h fix race in schedule() 2006-07-12 11:10:25 +02:00			`};`