This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "".

The branch, master has been updated via 320bb2e9a29256de37bfdb10b9dde3fd0f0d4a5d (commit) from 65d66b94d66e6b954f3430b90a67eaeca7bf37c6 (commit)

Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below.

- Log ----------------------------------------------------------------- commit 320bb2e9a29256de37bfdb10b9dde3fd0f0d4a5d Author: Balakrishna Garapati balakrishna.garapati@linaro.org Date: Tue Dec 6 15:15:49 2016 +0100

platform: linux-generic: reading cpu affinity from cpuset

With this new proposal cpu affinity is read correctly especially when using cgroups otherwise wrong cpu mask is set.

Fixes bug: https://bugs.linaro.org/show_bug.cgi?id=2472

Signed-off-by: Balakrishna Garapati balakrishna.garapati@linaro.org Reviewed-and-tested-by: Yi He yi.he@linaro.org Signed-off-by: Maxim Uvarov maxim.uvarov@linaro.org

diff --git a/platform/linux-generic/odp_cpumask.c b/platform/linux-generic/odp_cpumask.c index 6bf2632..64559a6 100644 --- a/platform/linux-generic/odp_cpumask.c +++ b/platform/linux-generic/odp_cpumask.c @@ -225,73 +225,36 @@ int odp_cpumask_next(const odp_cpumask_t *mask, int cpu) * This function obtains system information specifying which cpus are * available at boot time. */ -static int get_installed_cpus(void) +static int get_available_cpus(void) { - char *numptr; - char *endptr; - long int cpu_idnum; - DIR *d; - struct dirent *dir; + int cpu_idnum; + cpu_set_t cpuset; + int ret;

/* Clear the global cpumasks for control and worker CPUs */ odp_cpumask_zero(&odp_global_data.control_cpus); odp_cpumask_zero(&odp_global_data.worker_cpus);

- /* - * Scan the /sysfs pseudo-filesystem for CPU info directories. - * There should be one subdirectory for each installed logical CPU - */ - d = opendir("/sys/devices/system/cpu"); - if (d) { - while ((dir = readdir(d)) != NULL) { - cpu_idnum = CPU_SETSIZE; - - /* - * If the current directory entry doesn't represent - * a CPU info subdirectory then skip to the next entry. - */ - if (dir->d_type == DT_DIR) { - if (!strncmp(dir->d_name, "cpu", 3)) { - /* - * Directory name starts with "cpu"... - * Try to extract a CPU ID number - * from the remainder of the dirname. - */ - errno = 0; - numptr = dir->d_name; - numptr += 3; - cpu_idnum = strtol(numptr, &endptr, - 10); - if (errno || (endptr == numptr)) - continue; - } else { - continue; - } - } else { - continue; - } - /* - * If we get here the current directory entry specifies - * a CPU info subdir for the CPU indexed by cpu_idnum. - */ + CPU_ZERO(&cpuset); + ret = sched_getaffinity(0, sizeof(cpuset), &cpuset);

- /* Track number of logical CPUs discovered */ - if (odp_global_data.num_cpus_installed < - (int)(cpu_idnum + 1)) - odp_global_data.num_cpus_installed = - (int)(cpu_idnum + 1); + if (ret < 0) { + ODP_ERR("Failed to get cpu affinity"); + return -1; + }

+ for (cpu_idnum = 0; cpu_idnum < CPU_SETSIZE - 1; cpu_idnum++) { + if (CPU_ISSET(cpu_idnum, &cpuset)) { + odp_global_data.num_cpus_installed++; /* Add the CPU to our default cpumasks */ odp_cpumask_set(&odp_global_data.control_cpus, - (int)cpu_idnum); + (int)cpu_idnum); odp_cpumask_set(&odp_global_data.worker_cpus, - (int)cpu_idnum); + (int)cpu_idnum); } - closedir(d); - return 0; - } else { - return -1; } + + return 0; }

/* @@ -429,7 +392,7 @@ int odp_cpumask_init_global(const odp_init_t *params) * Initialize the global control and worker cpumasks with lists of * all installed CPUs. Return an error if this procedure fails. */ - if (!get_installed_cpus()) { + if (!get_available_cpus()) { if (params) { if (params->control_cpus) { /*

-----------------------------------------------------------------------

Summary of changes: platform/linux-generic/odp_cpumask.c | 73 +++++++++--------------------------- 1 file changed, 18 insertions(+), 55 deletions(-)

hooks/post-receive