litmus-rt.git - The LITMUS^RT kernel.

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author	Adrian Hunter <adrian.hunter@intel.com>	2013-12-03 02:23:10 -0500
committer	Arnaldo Carvalho de Melo <acme@redhat.com>	2013-12-04 11:46:36 -0500
commit	906049c8276eb99af997f73d602649a98e360035 (patch)
tree	2999cc638bb5cb88f76b17176f8a3a780222759d /lib/cpu-notifier-error-inject.c
parent	0058aef65eda9c9dde8253af702d542ba7eef697 (diff)

perf tools: Do not disable source line lookup just because of 1 failure

Looking up an ip's source file name and line number does not succeed always. Current logic disables the lookup for a dso entirely on any failure. Change it so that disabling never happens if there has ever been a successful lookup for that dso but disable if the first 123 lookups fail. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1386055390-13757-8-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Diffstat (limited to 'lib/cpu-notifier-error-inject.c')

0 files changed, 0 insertions, 0 deletions

/* Hardware Random Number Generator Please read Documentation/hw_random.txt for details on use. ---------------------------------------------------------- This software may be used and distributed according to the terms of the GNU General Public License, incorporated herein by reference. */ #ifndef LINUX_HWRANDOM_H_ #define LINUX_HWRANDOM_H_ #include <linux/types.h> #include <linux/list.h> /** * struct hwrng - Hardware Random Number Generator driver * @name: Unique RNG name. * @init: Initialization callback (can be NULL). * @cleanup: Cleanup callback (can be NULL). * @data_present: Callback to determine if data is available * on the RNG. If NULL, it is assumed that * there is always data available. *OBSOLETE* * @data_read: Read data from the RNG device. * Returns the number of lower random bytes in "data". * Must not be NULL. *OBSOLETE* * @read: New API. drivers can fill up to max bytes of data * into the buffer. The buffer is aligned for any type. * @priv: Private data, for use by the RNG driver. */ struct hwrng { const char *name; int (*init)(struct hwrng *rng); void (*cleanup)(struct hwrng *rng); int (*data_present)(struct hwrng *rng, int wait); int (*data_read)(struct hwrng *rng, u32 *data); int (*read)(struct hwrng *rng, void *data, size_t max, bool wait); unsigned long priv; /* internal. */ struct list_head list; }; /** Register a new Hardware Random Number Generator driver. */ extern int hwrng_register(struct hwrng *rng); /** Unregister a Hardware Random Number Generator driver. */ extern void hwrng_unregister(struct hwrng *rng); #endif /* LINUX_HWRANDOM_H_ */


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