Prev: [PATCH] perf: fix cmpxchg warning in perf_event_amd.c
Next: v4 x86/mrst: add more timer config options
From: Frank Ch. Eigler on 19 May 2010 14:00 Hi - On Wed, May 19, 2010 at 11:08:06PM +0530, Srikar Dronamraju wrote: > [...] For global tracing we can't use access_process_vm. [...] Well, we have already demonstrated functional "global tracing" via access_process_vm, with the trade-off that affected pages are replicated on a per-process basis. (KSM could end up sharing them again, one supposes.) - FChE -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Peter Zijlstra on 19 May 2010 14:00 On Wed, 2010-05-19 at 23:08 +0530, Srikar Dronamraju wrote: > Or do you suggest any alternative methods for global tracing? COW the page for each existing and future mapping. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Srikar Dronamraju on 19 May 2010 22:30 * Peter Zijlstra <peterz(a)infradead.org> [2010-05-19 19:54:20]: > On Wed, 2010-05-19 at 23:08 +0530, Srikar Dronamraju wrote: > > > Or do you suggest any alternative methods for global tracing? > > COW the page for each existing and future mapping. Yes, we could certainly do this. However we could end up with multiple copies of the same page. And probably equal number of uprobe and probept structures. -- Thanks and Regards Srikar > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
First
|
Prev
|
Pages: 1 2 Prev: [PATCH] perf: fix cmpxchg warning in perf_event_amd.c Next: v4 x86/mrst: add more timer config options |