From c950fd6f201aea649932898206a850f0a7f25603 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 28 Jul 2016 00:08:25 +0900 Subject: pstore: Split pstore fragile flags This patch adds new PSTORE_FLAGS for each pstore type so that they can be enabled separately. This is a preparation for ongoing virtio-pstore work to support those types flexibly. The PSTORE_FLAGS_FRAGILE is changed to PSTORE_FLAGS_DMESG to preserve the original behavior. Cc: Anton Vorontsov Cc: Colin Cross Cc: Kees Cook Cc: Tony Luck Cc: "Rafael J. Wysocki" Cc: Len Brown Cc: Matt Fleming Cc: linux-acpi@vger.kernel.org Cc: linux-efi@vger.kernel.org Signed-off-by: Namhyung Kim [kees: retained "FRAGILE" for now to make merges easier] Signed-off-by: Kees Cook --- fs/pstore/platform.c | 17 ++++++++++------- fs/pstore/ram.c | 2 ++ 2 files changed, 12 insertions(+), 7 deletions(-) (limited to 'fs/pstore') diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 16ecca5b72d8..76dd604a0f2c 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -659,13 +659,14 @@ int pstore_register(struct pstore_info *psi) if (pstore_is_mounted()) pstore_get_records(0); - pstore_register_kmsg(); - - if ((psi->flags & PSTORE_FLAGS_FRAGILE) == 0) { + if (psi->flags & PSTORE_FLAGS_DMESG) + pstore_register_kmsg(); + if (psi->flags & PSTORE_FLAGS_CONSOLE) pstore_register_console(); + if (psi->flags & PSTORE_FLAGS_FTRACE) pstore_register_ftrace(); + if (psi->flags & PSTORE_FLAGS_PMSG) pstore_register_pmsg(); - } if (pstore_update_ms >= 0) { pstore_timer.expires = jiffies + @@ -689,12 +690,14 @@ EXPORT_SYMBOL_GPL(pstore_register); void pstore_unregister(struct pstore_info *psi) { - if ((psi->flags & PSTORE_FLAGS_FRAGILE) == 0) { + if (psi->flags & PSTORE_FLAGS_PMSG) pstore_unregister_pmsg(); + if (psi->flags & PSTORE_FLAGS_FTRACE) pstore_unregister_ftrace(); + if (psi->flags & PSTORE_FLAGS_CONSOLE) pstore_unregister_console(); - } - pstore_unregister_kmsg(); + if (psi->flags & PSTORE_FLAGS_DMESG) + pstore_unregister_kmsg(); free_buf_for_compression(); diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c index 2340262a7e97..c2ebf5084977 100644 --- a/fs/pstore/ram.c +++ b/fs/pstore/ram.c @@ -623,6 +623,8 @@ static int ramoops_probe(struct platform_device *pdev) goto fail_clear; } + cxt->pstore.flags = PSTORE_FLAGS_ALL; + err = pstore_register(&cxt->pstore); if (err) { pr_err("registering with pstore failed\n"); -- cgit v1.2.3-58-ga151