Searched hist:f42be8651a7a9d5cb165e5d176fc0b09621b4f4d (Results 1 – 2 of 2) sorted by relevance
| /linux/arch/x86/events/intel/ |
| H A D | lbr.c | diff f42be8651a7a9d5cb165e5d176fc0b09621b4f4d Fri Jul 03 14:49:12 CEST 2020 Kan Liang <kan.liang@linux.intel.com> perf/x86/intel/lbr: Use dynamic data structure for task_ctx
The type of task_ctx is hardcoded as struct x86_perf_task_context,
which doesn't apply for Architecture LBR. For example, Architecture LBR
doesn't have the TOS MSR. The number of LBR entries is variable. A new
struct will be introduced for Architecture LBR. Perf has to determine
the type of task_ctx at run time.
The type of task_ctx pointer is changed to 'void *', which will be
determined at run time.
The generic LBR optimization can be shared between Architecture LBR and
model-specific LBR. Both need to access the structure for the generic
LBR optimization. A helper task_context_opt() is introduced to retrieve
the pointer of the structure at run time.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/1593780569-62993-7-git-send-email-kan.liang@linux.intel.com
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| /linux/arch/x86/events/ |
| H A D | perf_event.h | diff f42be8651a7a9d5cb165e5d176fc0b09621b4f4d Fri Jul 03 14:49:12 CEST 2020 Kan Liang <kan.liang@linux.intel.com> perf/x86/intel/lbr: Use dynamic data structure for task_ctx
The type of task_ctx is hardcoded as struct x86_perf_task_context,
which doesn't apply for Architecture LBR. For example, Architecture LBR
doesn't have the TOS MSR. The number of LBR entries is variable. A new
struct will be introduced for Architecture LBR. Perf has to determine
the type of task_ctx at run time.
The type of task_ctx pointer is changed to 'void *', which will be
determined at run time.
The generic LBR optimization can be shared between Architecture LBR and
model-specific LBR. Both need to access the structure for the generic
LBR optimization. A helper task_context_opt() is introduced to retrieve
the pointer of the structure at run time.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/1593780569-62993-7-git-send-email-kan.liang@linux.intel.com
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