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| author | Robert Richter <robert.richter@amd.com> | 2010-06-04 13:33:10 +0400 |
|---|---|---|
| committer | Robert Richter <robert.richter@amd.com> | 2010-06-04 13:33:10 +0400 |
| commit | d8a382d2662822248a97ce9d670b90e68aefbd3a (patch) | |
| tree | 4f5bbd5d0a5881ed42de611402ea4ac2c6d6ff48 /include/linux/threads.h | |
| parent | 45c34e05c4e3d36e7c44e790241ea11a1d90d54e (diff) | |
| parent | c6df8d5ab87a246942d138321e1721edbb69f6e1 (diff) | |
| download | linux-d8a382d2662822248a97ce9d670b90e68aefbd3a.tar.xz | |
Merge remote branch 'tip/perf/urgent' into oprofile/urgent
Diffstat (limited to 'include/linux/threads.h')
| -rw-r--r-- | include/linux/threads.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/threads.h b/include/linux/threads.h index 052b12bec8bd..383ab9592bec 100644 --- a/include/linux/threads.h +++ b/include/linux/threads.h @@ -33,4 +33,13 @@ #define PID_MAX_LIMIT (CONFIG_BASE_SMALL ? PAGE_SIZE * 8 : \ (sizeof(long) > 4 ? 4 * 1024 * 1024 : PID_MAX_DEFAULT)) +/* + * Define a minimum number of pids per cpu. Heuristically based + * on original pid max of 32k for 32 cpus. Also, increase the + * minimum settable value for pid_max on the running system based + * on similar defaults. See kernel/pid.c:pidmap_init() for details. + */ +#define PIDS_PER_CPU_DEFAULT 1024 +#define PIDS_PER_CPU_MIN 8 + #endif |