Searched hist:"0 c4df02d" (Results 1 – 2 of 2) sorted by relevance
/openbmc/linux/include/trace/events/ |
H A D | nmi.h | 0c4df02d Fri Jun 21 10:51:38 CDT 2013 Dave Hansen <dave.hansen@linux.intel.com> x86: Add NMI duration tracepoints
This patch has been invaluable in my adventures finding issues in the perf NMI handler. I'm as big a fan of printk() as anybody is, but using printk() in NMIs is deadly when they're happening frequently.
Even hacking in trace_printk() ended up eating enough CPU to throw off some of the measurements I was making.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: paulus@samba.org Cc: acme@ghostprotocols.net Cc: Dave Hansen <dave@sr71.net> Signed-off-by: Ingo Molnar <mingo@kernel.org> 0c4df02d Fri Jun 21 10:51:38 CDT 2013 Dave Hansen <dave.hansen@linux.intel.com> x86: Add NMI duration tracepoints This patch has been invaluable in my adventures finding issues in the perf NMI handler. I'm as big a fan of printk() as anybody is, but using printk() in NMIs is deadly when they're happening frequently. Even hacking in trace_printk() ended up eating enough CPU to throw off some of the measurements I was making. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: paulus@samba.org Cc: acme@ghostprotocols.net Cc: Dave Hansen <dave@sr71.net> Signed-off-by: Ingo Molnar <mingo@kernel.org>
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/openbmc/linux/arch/x86/kernel/ |
H A D | nmi.c | 0c4df02d Fri Jun 21 10:51:38 CDT 2013 Dave Hansen <dave.hansen@linux.intel.com> x86: Add NMI duration tracepoints
This patch has been invaluable in my adventures finding issues in the perf NMI handler. I'm as big a fan of printk() as anybody is, but using printk() in NMIs is deadly when they're happening frequently.
Even hacking in trace_printk() ended up eating enough CPU to throw off some of the measurements I was making.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: paulus@samba.org Cc: acme@ghostprotocols.net Cc: Dave Hansen <dave@sr71.net> Signed-off-by: Ingo Molnar <mingo@kernel.org> 0c4df02d Fri Jun 21 10:51:38 CDT 2013 Dave Hansen <dave.hansen@linux.intel.com> x86: Add NMI duration tracepoints This patch has been invaluable in my adventures finding issues in the perf NMI handler. I'm as big a fan of printk() as anybody is, but using printk() in NMIs is deadly when they're happening frequently. Even hacking in trace_printk() ended up eating enough CPU to throw off some of the measurements I was making. Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: paulus@samba.org Cc: acme@ghostprotocols.net Cc: Dave Hansen <dave@sr71.net> Signed-off-by: Ingo Molnar <mingo@kernel.org>
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