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path: root/tools/lib/subcmd/help.h
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#ifndef __SUBCMD_HELP_H
#define __SUBCMD_HELP_H

#include <sys/types.h>

struct cmdnames {
	size_t alloc;
	size_t cnt;
	struct cmdname {
		size_t len; /* also used for similarity index in help.c */
		char name[];
	} **names;
};

static inline void mput_char(char c, unsigned int num)
{
	while(num--)
		putchar(c);
}

void load_command_list(const char *prefix,
		struct cmdnames *main_cmds,
		struct cmdnames *other_cmds);
void add_cmdname(struct cmdnames *cmds, const char *name, size_t len);
void clean_cmdnames(struct cmdnames *cmds);
int cmdname_compare(const void *a, const void *b);
void uniq(struct cmdnames *cmds);
/* Here we require that excludes is a sorted list. */
void exclude_cmds(struct cmdnames *cmds, struct cmdnames *excludes);
int is_in_cmdlist(struct cmdnames *c, const char *s);
void list_commands(const char *title, struct cmdnames *main_cmds,
		   struct cmdnames *other_cmds);

#endif /* __SUBCMD_HELP_H */
: Fix hwlat kthread migration
The hwlat tracer creates a kernel thread at start of the tracer. It is pinned to a single CPU and will move to the next CPU after each period of running. If the user modifies the migration thread's affinity, it will not change after that happens. The original code created the thread at the first instance it was called, but later was changed to destroy the thread after the tracer was finished, and would not be created until the next instance of the tracer was established. The code that initialized the affinity was only called on the initial instantiation of the tracer. After that, it was not initialized, and the previous affinity did not match the current newly created one, making it appear that the user modified the thread's affinity when it did not, and the thread failed to migrate again. Cc: stable@vger.kernel.org Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'net/dccp/ccids/lib/tfrc.h')