Jack, The perfmon subsystem will not work correctly if you mix Madison and Montecito in the same box. And there is not an easy way to make it work with such configuration. Performance counters are different between the two models. The only thing we could do, is to detect such condition and default to the architectured PMU. On Wed, Oct 18, 2006 at 04:25:59PM -0500, Jack Steiner wrote: > > If a system consists of mixed processor types, kmalloc() > can be called before the per-cpu data page is initialized. > If the slab contains sufficient memory, then kmalloc() works > ok. However, if the slabs are empty, slab calls the memory > allocator. This requires per-cpu data (NODE_DATA()) & the > cpu dies. > > Signed-off-by: Jack Steiner <steiner@xxxxxxx> > > > > > Index: linux/arch/ia64/kernel/setup.c > =================================================================== > --- linux.orig/arch/ia64/kernel/setup.c 2006-10-18 15:49:49.000000000 -0500 > +++ linux/arch/ia64/kernel/setup.c 2006-10-18 16:19:18.261790796 -0500 > @@ -643,12 +643,14 @@ struct seq_operations cpuinfo_op = { > .show = show_cpuinfo > }; > > -static char brandname[128]; > +#define MAX_BRANDS 4 > +static char brandname[MAX_BRANDS][128]; > > static char * __cpuinit > get_model_name(__u8 family, __u8 model) > { > char brand[128]; > + int i; > > if (ia64_pal_get_brand_info(brand)) { > if (family == 0x7) > @@ -660,12 +662,14 @@ get_model_name(__u8 family, __u8 model) > } else > memcpy(brand, "Unknown", 8); > } > - if (brandname[0] == '\0') > - return strcpy(brandname, brand); > - else if (strcmp(brandname, brand) == 0) > - return brandname; > - else > - return kstrdup(brand, GFP_KERNEL); > + for (i = 0; i < MAX_BRANDS; i++) > + if (strcmp(brandname[i], brand) == 0) > + return brandname[i]; > + for (i = 0; i < MAX_BRANDS; i++) > + if (brandname[i][0] == '\0') > + return strcpy(brandname[i], brand); > + BUG(); > + return NULL; /* quiet compiler */ > } > > static void __cpuinit > - > To unsubscribe from this list: send the line "unsubscribe linux-ia64" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- -Stephane - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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