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#ifndef XMALLOC_H
#define XMALLOC_H

#include <stdlib.h>

#include "built_in.h"
#include "die.h"

extern void *xmalloc(size_t size) __hidden __warn_unused_result;
extern void *xcalloc(size_t nmemb, size_t size) __hidden __warn_unused_result;
extern void *xzmalloc(size_t size) __hidden __warn_unused_result;
extern void *xmallocz(size_t size) __hidden __warn_unused_result;
extern void *xmalloc_aligned(size_t size, size_t alignment) __hidden __warn_unused_result;
extern void *xzmalloc_aligned(size_t size, size_t alignment) __hidden __warn_unused_result;
extern void *xmemdupz(const void *data, size_t len) __hidden __warn_unused_result;
extern void *xrealloc(void *ptr, size_t size) __hidden __warn_unused_result;
extern void xfree_func(void *ptr) __hidden;
extern char *xstrdup(const char *str) __hidden __warn_unused_result;
extern char *xstrndup(const char *str, size_t size) __hidden __warn_unused_result;

static inline void __xfree(void *ptr)
{
        if (unlikely((ptr) == NULL))
                panic("xfree: NULL pointer given as argument\n");
        free(ptr);
}

#define xzfree(ptr, size)	\
do {				\
	xmemset(ptr, 0, size);	\
	xfree(ptr);		\
} while (0)

#define xfree(ptr)	\
do {			\
	__xfree(ptr);	\
	(ptr) = NULL;	\
} while (0)

#endif /* XMALLOC_H */
&id=79c6f448c8b79c321e4a1f31f98194e4f6b6cae7'>net/nfc/nci/ntf.c parent0c744ea4f77d72b3dcebb7a8f2684633ec79be88 (diff)
tracing: 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/nfc/nci/ntf.c')