Am 18.01.2013 02:59, schrieb Dave Young: > > Hi, Here is an update of this patch, fixed the local variable issue. > --- > > Add memory usage trace to diffrent hook points > > Port mkdumprd memory trace functions wrote by jstancek@xxxxxxxxxx > For kdump, memory usage tracing is important because there's limited > memory in kdump 2nd kernel. > > Add a rd.memdebug cmdline for this. set rd.memdebug=<X> will set the > debug level to X which is the debug verbose level. > > the format of cmdline is like below: > <level>[+]:<type> > <level> is the debug level > [+] means debug level >= <level> > <type> is the debug info type, as for this patch I added mem, iomem, slab > mem is for /proc/meminfo, iomem is for /proc/iomem, slab is for /proc/slabinfo > Also shortmem is the stripped /proc/meminfo which only includes 3 lines of > Memfree, Cached and Slab, for example: > MemFree: 6327176 kB > Cached: 741916 kB > Slab: 77284 kB > > I added several trace point to the begin of several init hooks > At cmdline hooks I'm adding trace of "1+:mem 1+:iomem 3+:slab" > For other hooks I'm adding trace of "1:shortmem 2+:mem 3+:slab" > > This means: > rd.memdebug=1) > cmdline hook: print mem and iomem > other hooks: print shortmem > rd.memdebug=2) > cmdline hook: print mem and iomem > other hooks: print mem > rd.memdebug=3): > cmdline hook: print mem iomem, and slabinfo > other hooks: print mem and slabinfo > *): > do not print any mem debug info > > [v1->v2]: update to use getargnum with <minval> as argument > print iomem info at cmdline hook as well > [v2->v3]: harald: use $() instead of `` > use bash string match instead of grep and pipe. > [v3->v4]: harald: use local variables in function. > > Signed-off-by: Dave Young <dyoung@xxxxxxxxxx> merged -- To unsubscribe from this list: send the line "unsubscribe initramfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
