ac6e56e6d7
23900-xzalloc.patch 24144-cpufreq-turbo-crash.patch 24148-shadow-pgt-dying-op-performance.patch 24155-x86-ioapic-EOI-after-migration.patch 24156-x86-ioapic-shared-vectors.patch 24157-x86-xstate-init.patch 24168-x86-vioapic-clear-remote_irr.patch - submit fixes for bnc#649209 and bnc#711892 xl-create-pv-with-qcow2-img.patch update suspend_evtchn_lock.patch - Update trace.c, merge patches from upstream 23050-xentrace_dynamic_tracebuffer_allocation.patch 23091-xentrace_fix_t_info_pages_calculation..patch 23092-xentrace_print_calculated_numbers_in_calculate_tbuf_size.patch 23093-xentrace_remove_gdprintk_usage_since_they_are_not_in_guest_context.patch 23094-xentrace_update_comments.patch 23095-xentrace_use_consistent_printk_prefix.patch 23128-xentrace_correct_formula_to_calculate_t_info_pages.patch 23129-xentrace_remove_unneeded_debug_printk.patch 23173-xentrace_Move_register_cpu_notifier_call_into_boot-time_init..patch 23239-xentrace_correct_overflow_check_for_number_of_per-cpu_trace_pages.patch 23308-xentrace_Move_the_global_variable_t_info_first_offset_into_calculate_tbuf_size.patch 23309-xentrace_Mark_data_size___read_mostly_because_its_only_written_once.patch 23310-xentrace_Remove_unneeded_cast_when_assigning_pointer_value_to_dst.patch 23404-xentrace_reduce_trace_buffer_size_to_something_mfn_offset_can_reach.patch OBS-URL: https://build.opensuse.org/package/show/Virtualization/xen?expand=0&rev=160
59 lines
1.9 KiB
Diff
59 lines
1.9 KiB
Diff
changeset: 23643:335e96664589
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user: George Dunlap <george.dunlap@eu.citrix.com>
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date: Fri Jul 01 20:31:18 2011 +0100
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files: xen/common/trace.c
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description:
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xentrace: Allow tracing to be enabled at boot
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Add a "tevt_mask" parameter to the xen command-line, allowing
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trace records to be gathered early in boot. They will be placed
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into the trace buffers, and read when the user runs "xentrace".
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Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
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---
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xen/common/trace.c | 20 ++++++++++++++++----
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1 file changed, 16 insertions(+), 4 deletions(-)
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Index: xen-4.1.2-testing/xen/common/trace.c
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===================================================================
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--- xen-4.1.2-testing.orig/xen/common/trace.c
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+++ xen-4.1.2-testing/xen/common/trace.c
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@@ -45,7 +45,9 @@ CHECK_t_buf;
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/* opt_tbuf_size: trace buffer size (in pages) for each cpu */
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static unsigned int opt_tbuf_size;
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+static unsigned int opt_tevt_mask;
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integer_param("tbuf_size", opt_tbuf_size);
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+integer_param("tevt_mask", opt_tevt_mask);
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/* Pointers to the meta-data objects for all system trace buffers */
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static struct t_info *t_info;
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@@ -338,11 +340,21 @@ void __init init_trace_bufs(void)
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{
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register_cpu_notifier(&cpu_nfb);
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- if ( opt_tbuf_size && alloc_trace_bufs(opt_tbuf_size) )
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+ if ( opt_tbuf_size )
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{
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- printk(XENLOG_INFO "xentrace: allocation size %d failed, disabling\n",
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- opt_tbuf_size);
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- opt_tbuf_size = 0;
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+ if ( alloc_trace_bufs(opt_tbuf_size) )
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+ {
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+ printk("xentrace: allocation size %d failed, disabling\n",
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+ opt_tbuf_size);
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+ opt_tbuf_size = 0;
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+ }
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+ else if ( opt_tevt_mask )
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+ {
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+ printk("xentrace: Starting tracing, enabling mask %x\n",
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+ opt_tevt_mask);
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+ tb_event_mask = opt_tevt_mask;
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+ tb_init_done=1;
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+ }
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}
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}
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