On Sun, 16 Jan 2011 12:56:40 +0200, Felix Rubinstein wrote: > Hi Jean, > > I've searched mailing list and skimmed over the code to understand whether > kernel supports multiple threads support. > In other words, what if I have multiple threads writing over the same smbus > bus, i.e. the same /dev/i2c-X device but to different chip addresses. > Chip address is passed by means of I2C_SLAVE ioctl and not as part of the > i2c_smbus_write_... API meaning any thread could overwrite chip address. > > Is it possible to have multiple threads writing to different chip addresses > on the same bus, to get better (in parallel) performance from user-space? Access to every I2C bus is serialized by the kernel. So yes, it is possible, but no, this won't improve performance significantly. -- Jean Delvare -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
