From 7924dd9493c5b90bb1a10b3b9ec486fa10d87304 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Date: Wed, 13 Dec 2017 13:38:55 +0100 Subject: [PATCH 24/41] dump-guest-memory: using static DumpState, add DumpStatus MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit RH-Author: Marc-André Lureau Message-id: <20171213133912.26176-25-marcandre.lureau@redhat.com> Patchwork-id: 78373 O-Subject: [RHEL-7.5 qemu-kvm PATCH v3 24/41] dump-guest-memory: using static DumpState, add DumpStatus Bugzilla: 1411490 RH-Acked-by: Laszlo Ersek RH-Acked-by: Michael S. Tsirkin RH-Acked-by: Miroslav Rezanina From: Peter Xu Instead of malloc/free each time for DumpState, make it static. Added DumpStatus to show status for dump. This is to be used for detached dump. Signed-off-by: Peter Xu Reviewed-by: Fam Zheng Message-Id: <1455772616-8668-4-git-send-email-peterx@redhat.com> Signed-off-by: Paolo Bonzini (cherry picked from commit baf28f57e2dec63eebfcd3c00f8d4dea9fcde21e) Signed-off-by: Marc-André Lureau Signed-off-by: Miroslav Rezanina --- dump.c | 21 ++++++++++++++++----- include/sysemu/dump.h | 2 ++ qapi-schema.json | 18 ++++++++++++++++++ 3 files changed, 36 insertions(+), 5 deletions(-) diff --git a/dump.c b/dump.c index 790bfe4..254c0ba 100644 --- a/dump.c +++ b/dump.c @@ -1447,6 +1447,14 @@ static void get_max_mapnr(DumpState *s) s->max_mapnr = dump_paddr_to_pfn(s, last_block->target_end); } +static DumpState dump_state_global = { .status = DUMP_STATUS_NONE }; + +static void dump_state_prepare(DumpState *s) +{ + /* zero the struct, setting status to active */ + *s = (DumpState) { .status = DUMP_STATUS_ACTIVE }; +} + static void dump_init(DumpState *s, int fd, bool has_format, DumpGuestMemoryFormat format, bool paging, bool has_filter, int64_t begin, int64_t length, Error **errp) @@ -1680,24 +1688,27 @@ void qmp_dump_guest_memory(bool paging, const char *file, bool has_begin, return; } - s = g_malloc0(sizeof(DumpState)); + s = &dump_state_global; + dump_state_prepare(s); dump_init(s, fd, has_format, format, paging, has_begin, begin, length, &local_err); if (local_err) { - g_free(s); error_propagate(errp, local_err); + s->status = DUMP_STATUS_FAILED; return; } if (has_format && format != DUMP_GUEST_MEMORY_FORMAT_ELF) { - create_kdump_vmcore(s, errp); + create_kdump_vmcore(s, &local_err); } else { - create_vmcore(s, errp); + create_vmcore(s, &local_err); } + s->status = (local_err ? DUMP_STATUS_FAILED : DUMP_STATUS_COMPLETED); + error_propagate(errp, local_err); + dump_cleanup(s); - g_free(s); } DumpGuestMemoryCapability *qmp_query_dump_guest_memory_capability(Error **errp) diff --git a/include/sysemu/dump.h b/include/sysemu/dump.h index 2f04b24..21fc02d 100644 --- a/include/sysemu/dump.h +++ b/include/sysemu/dump.h @@ -38,6 +38,7 @@ #include "sysemu/dump-arch.h" #include "sysemu/memory_mapping.h" +#include "qapi-types.h" typedef struct QEMU_PACKED MakedumpfileHeader { char signature[16]; /* = "makedumpfile" */ @@ -176,6 +177,7 @@ typedef struct DumpState { off_t offset_page; /* offset of page part in vmcore */ size_t num_dumpable; /* number of page that can be dumped */ uint32_t flag_compress; /* indicate the compression format */ + DumpStatus status; /* current dump status */ } DumpState; uint16_t cpu_to_dump16(DumpState *s, uint16_t val); diff --git a/qapi-schema.json b/qapi-schema.json index 5138ed9..7988ae5 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -2646,6 +2646,24 @@ '*length': 'int', '*format': 'DumpGuestMemoryFormat' } } ## +# @DumpStatus +# +# Describe the status of a long-running background guest memory dump. +# +# @none: no dump-guest-memory has started yet. +# +# @active: there is one dump running in background. +# +# @completed: the last dump has finished successfully. +# +# @failed: the last dump has failed. +# +# Since 2.6 +## +{ 'enum': 'DumpStatus', + 'data': [ 'none', 'active', 'completed', 'failed' ] } + +## # @DumpGuestMemoryCapability: # # A list of the available formats for dump-guest-memory -- 1.8.3.1